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Di Y, Yang H, Zhang H, Li F. Nitrogen management indicators for sustainable crop production in an intensive potato system under drip irrigation. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 361:121270. [PMID: 38820796 DOI: 10.1016/j.jenvman.2024.121270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 05/24/2024] [Accepted: 05/26/2024] [Indexed: 06/02/2024]
Abstract
Reliable nitrogen (N) fertilizer management indicators are essential for improving crop yields and minimizing environmental impacts for sustainable production. The objectives of this study were to assess the importance of major N management indicators (NMIs) for higher yield with low risks of environmental pollution in an intensive potato system under drip irrigation. Six drip-irrigated field experiments with no N application (Control), farmer practice (FP), and optimized N management (OM) based on N-balance, soil mineral N (Nmin), and target yield were conducted from 2018 to 2020 in Inner Mongolia, China. The response of NMIs to potato yield and yield-based environment impact indices (EIY) was evaluated by the random forest algorithm. The N input, N losses from N leaching, ammonia (NH3) volatilization, nitrous oxide (N2O) emission, N use efficiency (NUE), N surplus, and soil residual N after harvest were obtained to identify the best NMIs for high yield and minimal ecological impact. The N management practices in field experimental sites affected the importance of the order of NMIs on potato yield and EIY. The NUE and N leaching were identified as the highest importance scores and the most essential controlling variables to potato yield and EIY, respectively. The integrated NUE and N leaching indicator played a vital role in improving potato yield and reducing ecological impact. The OM treatment achieved 46.0%, 63.6%, and 64.6% lower in N application rate, N surplus, and reactive N loss, and 62.4% higher in NUE than the FP treatment while achieving equal potato yields, respectively. Those key NMIs can guide farmers in understanding their practice short comes to achieve both high productivity and environmental sustainability in intensive potato production systems under drip irrigation.
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Affiliation(s)
- Yunfei Di
- College of Grassland, Resources and Environment, Inner Mongolia Agricultural University Hohhot, 010011, China; Inner Mongolia Key Laboratory of Soil Quality and Nutrient Resources, Key Laboratory of Agricultural Ecological Security and Green Development at Universities of Inner Mongolia Autonomous Hohhot, 010018, China
| | - Haibo Yang
- College of Grassland, Resources and Environment, Inner Mongolia Agricultural University Hohhot, 010011, China; Inner Mongolia Key Laboratory of Soil Quality and Nutrient Resources, Key Laboratory of Agricultural Ecological Security and Green Development at Universities of Inner Mongolia Autonomous Hohhot, 010018, China
| | - Hailin Zhang
- Department of Plant and Soil Sciences, Oklahoma State University, Stillwater, OK, 74078, USA
| | - Fei Li
- College of Grassland, Resources and Environment, Inner Mongolia Agricultural University Hohhot, 010011, China; Inner Mongolia Key Laboratory of Soil Quality and Nutrient Resources, Key Laboratory of Agricultural Ecological Security and Green Development at Universities of Inner Mongolia Autonomous Hohhot, 010018, China.
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Pereira P, Palma ML, Palma C, Borges C, Maurício E, Fernando AL, Duarte MP, Lageiro M, Fernandes A, Mateus N, Nicolai M. Exploring the Benefits of Nutritional and Chemical Characteristics of Touriga Nacional and Arinto Varieties ( Vitis vinifera L.). Foods 2024; 13:1535. [PMID: 38790834 PMCID: PMC11120371 DOI: 10.3390/foods13101535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2024] [Revised: 05/10/2024] [Accepted: 05/11/2024] [Indexed: 05/26/2024] Open
Abstract
Environmental degradation leads to an unsustainable food system. In addition to this issue, the consumption of foods that improve people's health and well-being is recommended. One of the alternatives is undoubtedly the use of by-products of winemaking, namely in the form of grape pomace flour (GPF). To verify the benefits of using the Touriga Nacional and Arinto (Vitis vinifera L.) flour varieties, analytical determinations were made to identify and quantify different components. In terms of nutritional characterization, the Touriga Nacional GPF showed results that indicate better nutritional quality than the Arinto GPF. The Touriga Nacional and Arinto samples had protein contents of 10.13% and 8.38%, polyunsaturated fatty acids of 6.66% and 5.18%, soluble dietary fiber of 14.3% and 1.7%, and insoluble dietary fiber of 55.1% and 46.4%, respectively. The anthocyanins, proanthocyanidins, and flavonols presented in samples were detected by HPLC-DAD/ESI-MS. Atomic absorption spectrometry revealed elevated concentrations of certain elements in Touriga Nacional compared to Arinto, with the former showing higher levels of aluminum (130 mg/kg) and iron (146 mg/kg) against the latter's Al (120 mg/kg) and Fe (112 mg/kg) content. GPF could become a valuable ingredient due to its nutritional quality and high content of various polyphenols.
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Affiliation(s)
- Paula Pereira
- CBIOS—Research Center for Biosciences & Health Technologies, Universidade Lusófona, Campo Grande 376, 1749-024 Lisboa, Portugal; (P.P.); (M.L.P.); (E.M.)
- Center for Natural Resources and Environment (CERENA), Instituto Superior Técnico (IST), Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
- EPCV—School of Phycology and Life Science, Department of Live Sciences, Universidade Lusófona, Campo Grande 376, 1749-024 Lisboa, Portugal
| | - Maria Lídia Palma
- CBIOS—Research Center for Biosciences & Health Technologies, Universidade Lusófona, Campo Grande 376, 1749-024 Lisboa, Portugal; (P.P.); (M.L.P.); (E.M.)
| | - Carla Palma
- Instituto Hidrográfico, R. Trinas 49, 1249-093 Lisboa, Portugal; (C.P.); (C.B.)
| | - Carlos Borges
- Instituto Hidrográfico, R. Trinas 49, 1249-093 Lisboa, Portugal; (C.P.); (C.B.)
| | - Elisabete Maurício
- CBIOS—Research Center for Biosciences & Health Technologies, Universidade Lusófona, Campo Grande 376, 1749-024 Lisboa, Portugal; (P.P.); (M.L.P.); (E.M.)
- Faculty of Engineering-BioRG, Universidade Lusófona, Campo Grande 376, 1749-024 Lisboa, Portugal
| | - Ana Luísa Fernando
- MEtRICs, Department of Chemistry, NOVA School of Science and Technology, Universidade NOVA de Lisboa, Campus de Caparica, 2829-516 Caparica, Portugal; (A.L.F.); (M.P.D.)
| | - Maria Paula Duarte
- MEtRICs, Department of Chemistry, NOVA School of Science and Technology, Universidade NOVA de Lisboa, Campus de Caparica, 2829-516 Caparica, Portugal; (A.L.F.); (M.P.D.)
| | - Manuela Lageiro
- INIAV—Instituto Nacional de Investigação Agrária e Veterinária, 2780-157 Oeiras, Portugal;
- GeoBioTec Research Center, NOVA School of Science and Technology, Universidade NOVA de Lisboa, Campus de Caparica, 2829-516 Caparica, Portugal
| | - Ana Fernandes
- LAQV/REQUIMTE, Chemistry and Biochemistry Department, Science Faculty, Porto University, 4169-007 Porto, Portugal; (A.F.); (N.M.)
| | - Nuno Mateus
- LAQV/REQUIMTE, Chemistry and Biochemistry Department, Science Faculty, Porto University, 4169-007 Porto, Portugal; (A.F.); (N.M.)
| | - Marisa Nicolai
- CBIOS—Research Center for Biosciences & Health Technologies, Universidade Lusófona, Campo Grande 376, 1749-024 Lisboa, Portugal; (P.P.); (M.L.P.); (E.M.)
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Singh K, Gupta S, Singh AP. Review: Nutrient-nutrient interactions governing underground plant adaptation strategies in a heterogeneous environment. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2024; 342:112024. [PMID: 38325661 DOI: 10.1016/j.plantsci.2024.112024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Revised: 12/20/2023] [Accepted: 02/01/2024] [Indexed: 02/09/2024]
Abstract
Plant growth relies on the mineral nutrients present in the rhizosphere. The distribution of nutrients in soils varies depending on their mobility and capacity to bind with soil particles. Consequently, plants often encounter either low or high levels of nutrients in the rhizosphere. Plant roots are the essential organs that sense changes in soil mineral content, leading to the activation of signaling pathways associated with the adjustment of plant architecture and metabolic responses. During differential availability of minerals in the rhizosphere, plants trigger adaptation strategies such as cellular remobilization of minerals, secretion of organic molecules, and the attenuation or enhancement of root growth to balance nutrient uptake. The interdependency, availability, and uptake of minerals, such as phosphorus (P), iron (Fe), zinc (Zn), potassium (K), nitrogen (N) forms, nitrate (NO3-), and ammonium (NH4+), modulate the root architecture and metabolic functioning of plants. Here, we summarized the interactions of major nutrients (N, P, K, Fe, Zn) in shaping root architecture, physiological responses, genetic components involved, and address the current challenges associated with nutrient-nutrient interactions. Furthermore, we discuss the major gaps and opportunities in the field for developing plants with improved nutrient uptake and use efficiency for sustainable agriculture.
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Affiliation(s)
- Kratika Singh
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi, India
| | - Shreya Gupta
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi, India
| | - Amar Pal Singh
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi, India.
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Adekiya AO, Ajayi GA, Adegbite KA, Imhanze FL, Ibaba AL. Mineralogical compositions of soils under three geological formations in some parts of Ogun state, Nigeria and their agricultural potentials. Sci Rep 2024; 14:6905. [PMID: 38519587 PMCID: PMC10960002 DOI: 10.1038/s41598-024-57397-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Accepted: 03/18/2024] [Indexed: 03/25/2024] Open
Abstract
Investigating the mineralogical compositions of soils under different geological formations becomes imperative for maximizing agricultural productivity and ensuring the long-term viability of agricultural practices. Therefore, studies were carried out on mineral compositions and diversities of soils developed over the Basement complex rock, Coastal plain sands and Ewekoro formations in Ogun state Nigeria. A total of nine profile pits (three per location) of 2 m × 1 m × 2 m size were dug in all the three locations. Soil samples were collected from the pedogenic horizons of each profile pits in replicates into a well labeled polyethylene bag. Using X-ray diffractometry (XRD) and scanning electron microscopy (SEM) the mineral contents and their relative abundance, elemental compositions and morphologies of the fine sand, coarse silt and clay fractions of the soils at different topographic positions were identified, described and compared. Results obtained from XRD and SEM analyses exhibited similarities. The most abundant elements in the basement complex and Ewekoro pedon were oxygen, carbon and silicon whereas in the coastal plain sand pedon, oxygen, carbon and aluminum were the most abundant element. The presence of mixed-layer illite, mica, kaolinite, quartz, hematite, anatase, goethite, and chlorite at varying degrees was observed in the pedons developed on these geological formations, although kaolinite and quartz dominated the soil matrix. The mineralogical complexity of the pedons followed the order of basement complex > coastal plain sand > Ewekoro formation. Profiles developed on the Ewekoro formation exhibited the highest degree of weathering, as evidenced by their chemical properties and mineralogical compositions. The petrographic evaluation of the three geological formations revealed that all pedons were rich in quartz and exhibited varying degrees of mineral complexity and maturation. The overlapping and distinct characteristics among the geologies indicated different stages of weathering. By using the mineral maturity index, profiles developed over the basement complex rock and the coastal plain sand could be regarded as sub-matured and this could have contributed significantly to the native fertility of these soils and profiles from the Ewekoro formation were the most weathered. The use of Ewekoro formation for agriculture would necessitate significant investments in agro-inputs and sound principles of soil management through integrated soil fertility management.
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Affiliation(s)
- Aruna Olasekan Adekiya
- Agriculture Programme, College of Agriculture, Engineering and Science, Bowen University, Iwo, Nigeria
| | - Grace Atinuke Ajayi
- Life on Land Research Group, College of Agricultural Sciences, Landmark University, PMB 1001, Omu-Aran, Kwara State, Nigeria
| | - Kehinde Abodunde Adegbite
- Life on Land Research Group, College of Agricultural Sciences, Landmark University, PMB 1001, Omu-Aran, Kwara State, Nigeria
| | | | - Ayibanoa Lekoo Ibaba
- Agriculture Programme, College of Agriculture, Engineering and Science, Bowen University, Iwo, Nigeria.
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Palumbo M, Bonelli L, Pace B, Montesano FF, Serio F, Cefola M. Reduced Fertilization to Improve Sustainable Use of Resources and Preserve Postharvest Quality of Fresh-Cut Wild Rocket ( Diplotaxis tenuifolia L.) in Soil-Bound and Soilless Cultivation. PLANTS (BASEL, SWITZERLAND) 2024; 13:499. [PMID: 38502041 PMCID: PMC10891778 DOI: 10.3390/plants13040499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 01/31/2024] [Accepted: 02/08/2024] [Indexed: 03/20/2024]
Abstract
Reducing fertilizer input is a goal for helping greenhouse farming to achieve higher sustainability in the production process while preserving overall crop performance and quality. Wild rocket plants were cultivated in a plastic greenhouse divided into two independent sectors, one for soil-bound (SbS) cultivation and another equipped for soilless (ScS) cultivation systems. In both SbS and ScS, the crop was subjected to treatments consisting of a high- and a low-input fertilization program (HF and LF treatment, respectively). Water use efficiency (WUE) and partial factor productivity (PFP) for nutrients (N, P, K, Ca, and Mg for ScS, and N for SbS) were measured. Rocket leaves, separated for the cultivation system and fertilization program and collected at different cuts during the growing cycle, were cold stored at 10 °C until 16 d. On each sampling day (at harvest and during storage), the sensory parameters, respiration rate, dry matter, color, electrolyte leakage, antioxidant activity, total phenols, total chlorophyll and ammonia content were evaluated. In ScS, the PFP for all nutrients supplied as fertilizers showed a significant increase with the LF treatment, with values higher than 30% recorded for N, K, and Ca. As for the postharvest performance, rocket leaves cultivated in ScS showed better qualitative traits than those cultivated in SbS, as suggested by the lower values of ammonia content and electrolyte leakage recorded at the end of storage period in samples grown in ScS. Moreover, in ScS, the data showed lower membrane damage in LF than HF rocket leaves. Finally, regarding total chlorophyll content, even if no effect of each treatment was recorded in SbS, rocket cultivated in ScS showed a better retention of this parameter by applying LF rather than HF treatment. In addition to this, a PLS model (R2 = 0.7) able to predict the cultivation system, using as a variable non-destructively measured total chlorophyll content, was implemented. Low fertilization input, both in SbS and in ScS, allowed satisfying production levels and more sustainable management of nutrients. LF treatment applied to ScS also had in positive effects on the postharvest quality of fresh-cut rocket leaves.
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Affiliation(s)
- Michela Palumbo
- Institute of Sciences of Food Production, National Research Council of Italy (CNR), c/o CS-DAT, Via Michele Protano, 71121 Foggia, Italy; (M.P.); (B.P.)
| | - Lucia Bonelli
- Institute of Sciences of Food Production, National Research Council of Italy (CNR), Via G. Amendola, 122/O, 70126 Bari, Italy;
| | - Bernardo Pace
- Institute of Sciences of Food Production, National Research Council of Italy (CNR), c/o CS-DAT, Via Michele Protano, 71121 Foggia, Italy; (M.P.); (B.P.)
| | | | - Francesco Serio
- Institute of Sciences of Food Production, National Research Council of Italy (CNR), Via G. Amendola, 122/O, 70126 Bari, Italy;
| | - Maria Cefola
- Institute of Sciences of Food Production, National Research Council of Italy (CNR), c/o CS-DAT, Via Michele Protano, 71121 Foggia, Italy; (M.P.); (B.P.)
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Zhang H, Adalibieke W, Ba W, Butterbach-Bahl K, Yu L, Cai A, Fu J, Yu H, Zhang W, Huang W, Jian Y, Jiang W, Zhao Z, Luo J, Deng J, Zhou F. Modeling denitrification nitrogen losses in China's rice fields based on multiscale field-experiment constraints. GLOBAL CHANGE BIOLOGY 2024; 30:e17199. [PMID: 38385944 DOI: 10.1111/gcb.17199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 01/26/2024] [Accepted: 01/30/2024] [Indexed: 02/23/2024]
Abstract
Denitrification plays a critical role in soil nitrogen (N) cycling, affecting N availability in agroecosystems. However, the challenges in direct measurement of denitrification products (NO, N2 O, and N2 ) hinder our understanding of denitrification N losses patterns across the spatial scale. To address this gap, we constructed a data-model fusion method to map the county-scale denitrification N losses from China's rice fields over the past decade. The estimated denitrification N losses as a percentage of N application from 2009 to 2018 were 11.8 ± 4.0% for single rice, 12.4 ± 3.7% for early rice, and 11.6 ± 3.1% for late rice. The model results showed that the spatial heterogeneity of denitrification N losses is primarily driven by edaphic and climatic factors rather than by management practices. In particular, diffusion and production rates emerged as key contributors to the variation of denitrification N losses. These findings humanize a 38.9 ± 4.8 kg N ha-1 N loss by denitrification and challenge the common hypothesis that substrate availability drives the pattern of N losses by denitrification in rice fields.
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Affiliation(s)
- Huayan Zhang
- Institute of Carbon Neutrality, Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing, China
| | - Wulahati Adalibieke
- Institute of Carbon Neutrality, Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing, China
| | - Wenxin Ba
- Institute of Carbon Neutrality, Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing, China
| | | | - Longfei Yu
- Institute of Environment and Ecology, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, Guangdong, China
| | - Andong Cai
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Jin Fu
- College of Geography and Remote Sensing, Hohai University, Nanjing, China
| | - Haoming Yu
- Institute of Carbon Neutrality, Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing, China
| | - Wantong Zhang
- Institute of Carbon Neutrality, Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing, China
| | - Weichen Huang
- Institute of Carbon Neutrality, Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing, China
| | - Yiwei Jian
- Institute of Carbon Neutrality, Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing, China
| | - Wenjun Jiang
- Institute of Carbon Neutrality, Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing, China
| | - Zheng Zhao
- Institute of Ecological Environment Protection Research, Shanghai Academy of Agricultural Sciences, Shanghai, China
| | - Jiafa Luo
- AgResearch Ruakura, Hamilton, New Zealand
| | - Jia Deng
- Earth Systems Research Center, Institute for the Study of Earth, Oceans and Space, University of New Hampshire, Durham, New Hampshire, USA
| | - Feng Zhou
- Institute of Carbon Neutrality, Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing, China
- College of Geography and Remote Sensing, Hohai University, Nanjing, China
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Xu P, Li G, Zheng Y, Fung JCH, Chen A, Zeng Z, Shen H, Hu M, Mao J, Zheng Y, Cui X, Guo Z, Chen Y, Feng L, He S, Zhang X, Lau AKH, Tao S, Houlton BZ. Fertilizer management for global ammonia emission reduction. Nature 2024; 626:792-798. [PMID: 38297125 DOI: 10.1038/s41586-024-07020-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 01/03/2024] [Indexed: 02/02/2024]
Abstract
Crop production is a large source of atmospheric ammonia (NH3), which poses risks to air quality, human health and ecosystems1-5. However, estimating global NH3 emissions from croplands is subject to uncertainties because of data limitations, thereby limiting the accurate identification of mitigation options and efficacy4,5. Here we develop a machine learning model for generating crop-specific and spatially explicit NH3 emission factors globally (5-arcmin resolution) based on a compiled dataset of field observations. We show that global NH3 emissions from rice, wheat and maize fields in 2018 were 4.3 ± 1.0 Tg N yr-1, lower than previous estimates that did not fully consider fertilizer management practices6-9. Furthermore, spatially optimizing fertilizer management, as guided by the machine learning model, has the potential to reduce the NH3 emissions by about 38% (1.6 ± 0.4 Tg N yr-1) without altering total fertilizer nitrogen inputs. Specifically, we estimate potential NH3 emissions reductions of 47% (44-56%) for rice, 27% (24-28%) for maize and 26% (20-28%) for wheat cultivation, respectively. Under future climate change scenarios, we estimate that NH3 emissions could increase by 4.0 ± 2.7% under SSP1-2.6 and 5.5 ± 5.7% under SSP5-8.5 by 2030-2060. However, targeted fertilizer management has the potential to mitigate these increases.
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Affiliation(s)
- Peng Xu
- School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, China
- Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin, China
| | - Geng Li
- Division of Environment and Sustainability, The Hong Kong University of Science and Technology, Hong Kong, China
- Division of Emerging Interdisciplinary Areas, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Yi Zheng
- School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, China.
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, China.
- Shenzhen Municipal Engineering Lab of Environmental IoT Technologies, Southern University of Science and Technology, Shenzhen, China.
| | - Jimmy C H Fung
- Division of Environment and Sustainability, The Hong Kong University of Science and Technology, Hong Kong, China.
- Department of Mathematics, The Hong Kong University of Science and Technology, Hong Kong, China.
| | - Anping Chen
- Department of Biology and Graduate Degree Program in Ecology, Colorado State University, Fort Collins, CO, USA
| | - Zhenzhong Zeng
- School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, China
| | - Huizhong Shen
- School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, China
| | - Min Hu
- State Joint Key Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, China
| | - Jiafu Mao
- Environmental Sciences Division and Climate Change Science Institute, Oak Ridge National Laboratory, Oak Ridge, TN, USA
| | - Yan Zheng
- School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, China
| | - Xiaoqing Cui
- School of Grassland Science, Beijing Forestry University, Beijing, China
| | - Zhilin Guo
- School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, China
| | - Yilin Chen
- School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, China
| | - Lian Feng
- School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, China
| | - Shaokun He
- School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, China
| | - Xuguo Zhang
- Department of Mathematics, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Alexis K H Lau
- Division of Environment and Sustainability, The Hong Kong University of Science and Technology, Hong Kong, China
- Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Shu Tao
- School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, China
- Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing, China
| | - Benjamin Z Houlton
- Department of Ecology and Evolutionary Biology and Department of Global Development, Cornell University, Ithaca, NY, USA
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Shu X, Zhang X, Wang S, Fu T, Ding Z, Yang Y, Wang Z, Zhao S, Xu J, Zhou J, Ju J, Huang J, Yao Y, Wang Y, Dong G. Simplified panicle fertilization is applicable to japonica cultivars, but splits are preferred in indica rice for a higher paddy yield under wheat straw return. FRONTIERS IN PLANT SCIENCE 2024; 15:1273774. [PMID: 38352646 PMCID: PMC10861670 DOI: 10.3389/fpls.2024.1273774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 01/10/2024] [Indexed: 02/16/2024]
Abstract
Introduction The panicle fertilization strategy for japonica and indica rice under wheat straw return (SR) has not been updated, especially on the elaboration of their impacts on spikelet differentiation and degeneration. This study aimed to verify the hypothesis that SR increases spikelet number by reducing spikelet degeneration and to explore the possibility of simplifying panicle fertilization. Methods In three consecutive years, four varieties of japonica and indica rice were field-grown in Yangzhou, Jiangsu Province, China. Six panicle fertilization rates and split treatments were applied to SR and no straw return (NR) conditions. Results The results showed that SR promoted rice yield significantly by 3.77%, and the highest yields were obtained under the T2 (split panicle fertilization at the panicle initiation (PI) and spikelet primordium differentiation (SPD) stages) and T1 (panicle fertilization only at the PI stage) treatments, for indica and japonica rice, respectively. Correlation and path analysis revealed that the number of spikelets per panicle was the most attributable to yield variation. SR significantly increased the concentration of alkali hydrolyzable N in the soil 40 days after rice transplantation, significantly increased the nitrogen accumulation per stem (NA) during the SPD-pollen mother cell meiosis (PMC) stage, and increased the brassinosteroids level in the young panicles at the PMC stage. SR also reduced the degeneration rate of spikelets (DRS) and increased the number of surviving spikelets (NSS). The dry matter accumulation per stem was more important to increasing the NA in japonica rice at the PMC stage, whereas NA was more affected by the N content than the dry matter accumulation in indica rice. In japonica rice, panicle N application once only at the PI stage combined with the N released from SR was enough to improve the plant N content, reduce the DRS, and increase the NSS. For indica rice, split application of N panicle fertilization at both the PI and SPD stages was still necessary to achieve a maximum NSS. Discussion In conclusion, under wheat SR practice, panicle fertilization could be simplified to once in japonica rice with a significant yield increase, whereas equal splits might still be optimal for indica rice.
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Affiliation(s)
- Xiaowei Shu
- Jiangsu Key Laboratory of Crop Cultivation and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, Jiangsu, China
| | - Xiaoxiang Zhang
- Lixiahe Agricultural Research Institute of Jiangsu Province, Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding, Yangzhou, Jiangsu, China
| | - Shushen Wang
- Jiangsu Key Laboratory of Crop Cultivation and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, Jiangsu, China
| | - Tong Fu
- Jiangsu Key Laboratory of Crop Cultivation and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, Jiangsu, China
| | - Zhouyu Ding
- Jiangsu Key Laboratory of Crop Cultivation and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, Jiangsu, China
| | - Ying Yang
- Jiangsu Key Laboratory of Crop Cultivation and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, Jiangsu, China
| | - Zihan Wang
- Jiangsu Key Laboratory of Crop Cultivation and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, Jiangsu, China
| | - Shiru Zhao
- Jiangsu Key Laboratory of Crop Cultivation and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, Jiangsu, China
| | - Jiejiao Xu
- Jiangsu Key Laboratory of Crop Cultivation and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, Jiangsu, China
| | - Juan Zhou
- Jiangsu Key Laboratory of Crop Cultivation and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, Jiangsu, China
| | - Jing Ju
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou, Jiangsu, China
| | - Jianye Huang
- Jiangsu Key Laboratory of Crop Cultivation and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, Jiangsu, China
| | - Youli Yao
- Jiangsu Key Laboratory of Crop Cultivation and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, Jiangsu, China
| | - Yulong Wang
- Jiangsu Key Laboratory of Crop Cultivation and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, Jiangsu, China
| | - Guichun Dong
- Jiangsu Key Laboratory of Crop Cultivation and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, Jiangsu, China
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9
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Wang C, Xie Y, Tan Z. Soil potassium depletion in global cereal croplands and its implications. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 907:167875. [PMID: 37865238 DOI: 10.1016/j.scitotenv.2023.167875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 10/07/2023] [Accepted: 10/14/2023] [Indexed: 10/23/2023]
Abstract
Nitrogen (N), phosphorus (P) and potassium (K) are of the most essential nutrients for crop production, and inputs of their fertilizers have been a direct and effective way to replenish their removal from crop harvest. However, the global soil K status is scarcely documented. This study attempts to evaluate the soil K deficit in global cereal croplands and potential effects of better K fertilizer management. We hypothesized that historical records of cereal yield and K fertilizer use rate (K-FUR) can be used to understand how soil K deficit is related to the cumulative insufficient K replenishment. Evidently, the cereal production has been depleting soil K at a rate much higher than its replenishment, resulting in soil K deficit across 61 % of the global cereal harvest area with an average K-FUR (kg ha-1) of 7.1 which is much lower than the ∼27 required to balance N and P supply for an optimal grain yield. Replenishing K for all K-deficit areas based on current K-FUR classes could potentially add about 601 Mt. grains to the global food production: 386 Mt. from 153 M ha croplands with K-FUR class 10-20 kg ha-1; 90 Mt. from 131 M ha with K-FUR class 3-10 kg ha-1; and 126 Mt. from 158 M ha with K-FUR class <3 kg ha-1. Global soil K deficit is a long-standing and ubiquitous issue, and to replenish K for all K-deficit areas as proposed herein can be a feasible way for improving cereal yield by about 49 %. Increasing awareness of public and policy-makers about this threat and potential will help lead to a judicious allocation of limited potash resources and to a better return on any financial and humanitarian aids for eradicating poverty and hunger worldwide while also advancing global food security and agricultural sustainability.
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Affiliation(s)
- Changwei Wang
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Yingkai Xie
- South China Academy of Natural Resources Science and Technology, Guangzhou 510610, China
| | - Zhengxi Tan
- South China Academy of Natural Resources Science and Technology, Guangzhou 510610, China.
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10
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Liu D, Gong H, Li J, Liu Z, Wang L, Ouyang Z, Xu L, Wang T. Continuous crop rotation increases soil organic carbon stocks in river deltas: A 40-year field evidence. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 906:167749. [PMID: 37838062 DOI: 10.1016/j.scitotenv.2023.167749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 09/23/2023] [Accepted: 10/09/2023] [Indexed: 10/16/2023]
Abstract
River deltas, as important food production centers, support 66 % of the world's population, together with other coastal areas. However, agriculture in river deltas is negatively affected by soil salinization and agricultural intensification. Improving the soil carbon pool is a mutually beneficial solution for maximizing crop production and improving climate resilience to secure food production. In this study, long-term croplands in the Yellow River Delta (YRD), with a wheat-maize (WM) rotation system and a single cotton (SC) cropping system, were selected to explore the changes in soil organic carbon (SOC) stocks and the driving mechanisms at 0-20 cm depth from 1980 to 2020. We found that, over the past 40 years, the SOC stocks in WM and SC croplands had increased by 10.05 Mg C ha-1 and 7.44 Mg C ha-1, respectively. The Random forest model revealed that in the WM croplands, soil N stock and available K were the most important driving factors of SOC stocks, while in SC croplands, soil type and salinity were the most important driving factors of SOC stock dynamics. An increase in soil salinity to 2.0 ‰ caused a 17.5 % loss in SOC stocks in SC croplands. Our results show that, in the long run, croplands with a WM rotation system have stronger carbon sequestration potential. Depending on the planting system, promoting crop carbon input under high soil nutrients and affecting SOC decomposition by soil salinity are two different pathways of SOC sequestration in delta croplands. We propose that nutrient management and organic fertilizer application are crucial for increasing SOC stocks in the WM and SC croplands, respectively. This study confirms that it is of practical significance to take measures to promote soil carbon sequestration at the farmland scale and to provide scientific guidance for the sustainable development of river delta agriculture.
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Affiliation(s)
- Deyao Liu
- Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Huarui Gong
- Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; Yellow River Delta Modern Agricultural Engineering Laboratory, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
| | - Jing Li
- Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China.
| | - Zhen Liu
- Yellow River Delta Modern Agricultural Engineering Laboratory, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
| | - Lingqing Wang
- Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
| | - Zhu Ouyang
- Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; Yellow River Delta Modern Agricultural Engineering Laboratory, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
| | - Li Xu
- Beijing Research Center for Agricultural Standards and Testing, Beijing Academy of Agricultural and Forestry Sciences, Beijing 100097, China
| | - Tieyu Wang
- Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Prevention, Shantou University, Shantou 515063, China
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11
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Zhang L, Xue WT, Sun H, Hu YC, Wu R, Tian Y, Chen YS, Ma L, Chen Q, Du Y, Bai Y, Liu SJ, Zou GY. Can the Blended Application of Controlled-Release and Common Urea Effectively Replace the Common Urea in a Wheat-Maize Rotation System? A Case Study Based on a Long-Term Experiment. PLANTS (BASEL, SWITZERLAND) 2023; 12:4085. [PMID: 38140413 PMCID: PMC10748289 DOI: 10.3390/plants12244085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 11/22/2023] [Accepted: 11/29/2023] [Indexed: 12/24/2023]
Abstract
The one-time application of blended urea (BU), combining controlled-release urea (CRU) and uncoated urea, has proven to be a promising nitrogen (N) management strategy. However, the long-term sustainability of blending urea remains largely unexplored. To assess whether a single application of blended urea could effectively replace split uncoated urea applications, a long-term field experiment was conducted in the North China Plain (NCP). The results indicated that, when compared to common urea (CU) at the optimal N rate (180 kg N ha-1), BU achieved comparable grain yields, N uptake and NUE (61% vs. 62). BU exhibited a 12% higher 0-20 cm soil organic nitrogen stock and a 9% higher soil organic carbon (C) stock. Additionally, BU reduced life-cycle reactive N (Nr) losses and the N footprint by 10%, and lowered greenhouse gas (GHG) emissions and the C footprint by 7%. From an economic analysis perspective, BU demonstrated comparable private profitability and a 3% greater ecosystem economic benefit. Therefore, BU under the optimal N rate has the potential to substitute split applications of common urea in the long-term and can be regarded as a sustainable N management strategy for wheat and maize production in the NCP.
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Affiliation(s)
- Ling Zhang
- Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; (L.Z.); (W.-T.X.); (H.S.); (R.W.); (Y.T.); (Y.-S.C.); (L.M.); (Q.C.); (Y.D.); (Y.B.)
| | - Wen-Tao Xue
- Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; (L.Z.); (W.-T.X.); (H.S.); (R.W.); (Y.T.); (Y.-S.C.); (L.M.); (Q.C.); (Y.D.); (Y.B.)
| | - Hao Sun
- Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; (L.Z.); (W.-T.X.); (H.S.); (R.W.); (Y.T.); (Y.-S.C.); (L.M.); (Q.C.); (Y.D.); (Y.B.)
| | - Yun-Cai Hu
- Department of Plant Sciences, Chair of Plant Nutrition, Technical University of Munich, 85354 Freising, Germany;
| | - Rong Wu
- Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; (L.Z.); (W.-T.X.); (H.S.); (R.W.); (Y.T.); (Y.-S.C.); (L.M.); (Q.C.); (Y.D.); (Y.B.)
| | - Ye Tian
- Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; (L.Z.); (W.-T.X.); (H.S.); (R.W.); (Y.T.); (Y.-S.C.); (L.M.); (Q.C.); (Y.D.); (Y.B.)
| | - Yi-Shan Chen
- Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; (L.Z.); (W.-T.X.); (H.S.); (R.W.); (Y.T.); (Y.-S.C.); (L.M.); (Q.C.); (Y.D.); (Y.B.)
| | - Liang Ma
- Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; (L.Z.); (W.-T.X.); (H.S.); (R.W.); (Y.T.); (Y.-S.C.); (L.M.); (Q.C.); (Y.D.); (Y.B.)
| | - Qian Chen
- Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; (L.Z.); (W.-T.X.); (H.S.); (R.W.); (Y.T.); (Y.-S.C.); (L.M.); (Q.C.); (Y.D.); (Y.B.)
| | - Ying Du
- Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; (L.Z.); (W.-T.X.); (H.S.); (R.W.); (Y.T.); (Y.-S.C.); (L.M.); (Q.C.); (Y.D.); (Y.B.)
| | - Yang Bai
- Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; (L.Z.); (W.-T.X.); (H.S.); (R.W.); (Y.T.); (Y.-S.C.); (L.M.); (Q.C.); (Y.D.); (Y.B.)
| | - Shan-Jiang Liu
- Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; (L.Z.); (W.-T.X.); (H.S.); (R.W.); (Y.T.); (Y.-S.C.); (L.M.); (Q.C.); (Y.D.); (Y.B.)
| | - Guo-Yuan Zou
- Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; (L.Z.); (W.-T.X.); (H.S.); (R.W.); (Y.T.); (Y.-S.C.); (L.M.); (Q.C.); (Y.D.); (Y.B.)
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12
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Penuelas J, Sardans J. Human-driven global nutrient imbalances increase risks to health. ECO-ENVIRONMENT & HEALTH (ONLINE) 2023; 2:246-251. [PMID: 38435356 PMCID: PMC10902514 DOI: 10.1016/j.eehl.2023.08.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Revised: 08/06/2023] [Accepted: 08/12/2023] [Indexed: 03/05/2024]
Abstract
Human-induced inputs of nitrogen (N) and phosphorus (P) into the biosphere have reached unprecedented levels, particularly N, leading to an escalating global anthropogenic N:P ratio. This ratio has emerged as a significant driver of environmental change, impacting organisms, ecosystems, and global food security. However, the implications of this ratio for human health have been largely overlooked and remain uncertain. This article aims to fill this knowledge gap by exploring the potential effects of N:P ratios on both non-infectious and infectious diseases. Preliminary data emphasize the importance of investigating the influence of N:P ratios on human health, suggesting a potential role in the rise of non-infectious diseases, such as cancer, as well as the proliferation of infectious diseases, including Zika and malaria. These findings highlight the urgent need for increased attention from the scientific community and policymakers regarding the complex impacts of the human-induced biospheric N:P ratio. It is crucial to investigate and understand the underlying mechanisms and drivers behind these effects. Furthermore, there is significant potential for improving human health through the manipulation of N:P ratios and the availability of N and P. This applies not only to medical treatments but also to innovative fertilizer management strategies. These avenues present promising opportunities to address the challenges associated with human health in an ever-changing world.
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Affiliation(s)
- Josep Penuelas
- CSIC, Global Ecology Unit CREAF-CSIC-UAB, 08193 Bellaterra, Barcelona, Catalonia, Spain
- CREAF, 08193 Cerdanyola del Vallès, Barcelona, Catalonia, Spain
| | - Jordi Sardans
- CSIC, Global Ecology Unit CREAF-CSIC-UAB, 08193 Bellaterra, Barcelona, Catalonia, Spain
- CREAF, 08193 Cerdanyola del Vallès, Barcelona, Catalonia, Spain
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13
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Simpson GB, Jewitt GPW, Mabhaudhi T, Taguta C, Badenhorst J. An African perspective on the Water-Energy-Food nexus. Sci Rep 2023; 13:16842. [PMID: 37803054 PMCID: PMC10558539 DOI: 10.1038/s41598-023-43606-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Accepted: 09/26/2023] [Indexed: 10/08/2023] Open
Abstract
There is a need to address resource security and distributional justice in developing countries. People need water, energy, and food to sustain their livelihoods, grow economies, and achieve sustainable development. The interactions between these resource sectors form the crux of water-energy-food (WEF) nexus assessments. In this study, we have utilised the WEF Nexus Index to analyse the WEF nexus of 54 African nations. The results from the analysis were used to illustrate the opportunities and constraints for future development. Generally, African countries are performing sub-optimally in the WEF Nexus Index due to the insecurity of water, energy and/or food. The performance of countries varies with context, highlighting the need for contextual analysis in identifying challenges and potential solutions. Implementation of interventions for achieving WEF security needs to be planned from an integrated perspective to optimise synergies and minimize trade-offs. Implementation of the WEF nexus approach towards simultaneous security of WEF resources has potential to improve the WEF nexus. For example and for many African countries, policies that undergird investments in energy supply projects are needed to unlock available freshwater resources and meet food requirements-energy is shown to be a critical enabler of development. Such projects can be utilised to enhance the ability of farmers to manage water through drought-proofing rainfed agriculture, an increase in irrigation development, or both. WEF nexus-based studies, policies, and projects must be focused on the direct and indirect achievement of SDGs 1, 2, 6, 7, and 13, both in terms of access and availability, to ensure distributional justice, especially in the African context. Such actions, combined with broad public participation, can have a ripple effect on other SDGs such as SDGs 5, 10, and 17, thereby reducing inequalities and building partnerships to attain these aspirational goals. The assessment of Africa's relatively low scores in terms of the WEF Nexus Index does not represent a negative narrative. Instead, it provides an entry point to identifying hotspots and understanding the underlying challenges, through which more detailed analyses can lead to identified solutions and policies. Many African countries are trapped in an environment that could be termed a 'poverty-unemployment-inequality nexus' (due to the interlinkages that exist between these 'wicked' problems). The WEF Nexus Index provides high-level insights into these opportunities.
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Affiliation(s)
| | - Graham P W Jewitt
- IHE Delft Institute for Water Education, Delft, The Netherlands
- Civil Engineering and Geosciences, Delft University of Technology, Delft, The Netherlands
- Centre for Water Resources Research, College of Agriculture, Engineering and Science, University of KwaZulu-Natal, Pietermaritzburg, South Africa
| | - Tafadzwanashe Mabhaudhi
- Centre for Water Resources Research, College of Agriculture, Engineering and Science, University of KwaZulu-Natal, Pietermaritzburg, South Africa
- Centre for Transformative Agricultural and Food Systems, College of Agriculture, Engineering, and Science, University of KwaZulu-Natal, Pietermaritzburg, South Africa
- International Water Management Institute, West Africa Office, Accra, Ghana
| | - Cuthbert Taguta
- Centre for Water Resources Research, College of Agriculture, Engineering and Science, University of KwaZulu-Natal, Pietermaritzburg, South Africa
- School of Engineering, College of Agriculture, Engineering and Science, University of KwaZulu-Natal, P. Bag X01, Pietermaritzburg, 3209, South Africa
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14
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Johnson JM, Ibrahim A, Dossou-Yovo ER, Senthilkumar K, Tsujimoto Y, Asai H, Saito K. Inorganic fertilizer use and its association with rice yield gaps in sub-Saharan Africa. GLOBAL FOOD SECURITY 2023; 38:100708. [PMID: 37752897 PMCID: PMC10518462 DOI: 10.1016/j.gfs.2023.100708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 06/28/2023] [Accepted: 07/11/2023] [Indexed: 09/28/2023]
Abstract
Where and which countries should receive higher priority for improving inorganic fertilizer use in rice fields in sub-Saharan Africa (SSA)? This study addressed this question by assessing the spatial variation in fertilizer use and its association with rice yield and yield gap in 24 SSA countries through a systematic literature review of peer-reviewed papers, theses, and grey literature published between 1995 and 2021. The results showed a large variation in N, P, and K fertilizer application rates and rice yield and an opportunity for narrowing the yield gap by increasing N and P rates, especially in irrigated rice systems. We identified clusters of sites/countries based on nutrient input and yield and suggested research and development strategies for improving yields and optimizing nutrient use efficiencies. Further research is essential to identify the factors causing low fertilizer use and the poor association between its use and yield in rainfed systems.
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Affiliation(s)
- Jean-Martial Johnson
- Africa Rice Center (AfricaRice), 01 B.P. 2551, Bouaké 01, Cote d'Ivoire
- Institute of Crop Science and Resource Conservation (INRES), University of Bonn, D-53115, Bonn, Germany
| | - Ali Ibrahim
- Africa Rice Center (AfricaRice), PMB 82, 901101, Abuja, Nigeria
| | | | | | - Yasuhiro Tsujimoto
- Japan International Research Center for Agricultural Sciences (JIRCAS), 1-1 Ohwashi, Tsukuba, Ibaraki, 3058686, Japan
| | - Hidetoshi Asai
- Japan International Research Center for Agricultural Sciences (JIRCAS), 1-1 Ohwashi, Tsukuba, Ibaraki, 3058686, Japan
| | - Kazuki Saito
- Africa Rice Center (AfricaRice), 01 B.P. 2551, Bouaké 01, Cote d'Ivoire
- International Rice Research Institute (IRRI), DAPO Box 7777, Metro Manila 1301, Philippines
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15
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Zhang SC, Zhang YL, Guo XJ, Luo M, Li SD, Guo RJ. Combination of Bacillus and Low Fertigation Input Promoted the Growth and Productivity of Chinese Cabbage and Enriched Beneficial Rhizosphere Bacteria Lechevalieria. BIOLOGY 2023; 12:1130. [PMID: 37627014 PMCID: PMC10452305 DOI: 10.3390/biology12081130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 08/05/2023] [Accepted: 08/10/2023] [Indexed: 08/27/2023]
Abstract
Long-term overfertilization increases soil salinity and disease occurrence and reduces crop yield. Integrated application of microbial agents with low fertigation input might be a sustainable and cost-effective strategy. Herein, the promoting effects of Bacillus velezensis B006 on the growth of Chinese cabbage under different fertigation conditions in field trials were studied and the underlying mechanisms were revealed. In comparison with normal fertigation (water potential of -30 kPa and soluble N, P, K of 29.75, 8.26, 21.48 Kg hm-2) without B006 application, the combination of B. velezensis B006 and reduced fertigation input (-50 kPa and N, P, K of 11.75, 3.26, 6.48 Kg hm-2) promoted cabbage growth and root development, restrained the occurrence of soft rot disease, and improved the yield. High-performance liquid chromatography (HPLC) analyses indicated that B006 application promoted the production of indole-3-acetic acid and salicylic acid in cabbage roots, which are closely related to plant growth. Rhizosphere microbiota analyses indicated that the combination of low fertigation input and B006 application promoted the enrichment of Streptomyces, Lechevalieria, Promicromonospora, and Aeromicrobium and the abundance of Lechevalieria was positively correlated with the root length and vitality. This suggested that the integrated application of reduced fertigation and Bacillus is highly efficient to improve soil ecology and productivity and will benefit the sustainable development of crop cultivation in a cost-effective way.
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Affiliation(s)
- Shi-Chang Zhang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
- College of Agriculture, Xinjiang Agricultural University, Urumqi 830052, China
| | - Yu-Lu Zhang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Xiao-Jing Guo
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Ming Luo
- College of Agriculture, Xinjiang Agricultural University, Urumqi 830052, China
| | - Shi-Dong Li
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Rong-Jun Guo
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
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16
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Hu B, Flemetakis E, Liu Z, Hänsch R, Rennenberg H. Significance of nitrogen-fixing actinorhizal symbioses for restoration of depleted, degraded, and contaminated soil. TRENDS IN PLANT SCIENCE 2023; 28:752-764. [PMID: 37002002 DOI: 10.1016/j.tplants.2023.03.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 02/09/2023] [Accepted: 03/09/2023] [Indexed: 06/17/2023]
Abstract
Atmospheric nitrogen (N2)-fixing legume trees are frequently used for the restoration of depleted, degraded, and contaminated soils. However, biological N2 fixation (BNF) can also be performed by so-called actinorhizal plants. Actinorhizal plants include a high diversity of woody species and therefore can be applied in a broad spectrum of environments. In contrast to N2-fixing legumes, the potential of actinorhizal plants for soil restoration remains largely unexplored. In this Opinion, we propose related basic research requirements for the characterization of environmental stress responses that determine the restoration potential of actinorhizal plants for depleted, degraded, and contaminated soils. We identify advantages and unexplored processes of actinorhizal plants and describe a mainly uncharted avenue of future research for this important group of plant species.
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Affiliation(s)
- Bin Hu
- Center of Molecular Ecophysiology (CMEP), College of Resources and Environment, Southwest University No. 2, Tiansheng Road, Beibei District, 400715 Chongqing, PR China.
| | - Emmanouil Flemetakis
- Center of Molecular Ecophysiology (CMEP), College of Resources and Environment, Southwest University No. 2, Tiansheng Road, Beibei District, 400715 Chongqing, PR China; Laboratory of Molecular Biology, Department of Biotechnology, Agricultural University of Athens, 11855 Athens, Greece
| | - Zhenshan Liu
- Center of Molecular Ecophysiology (CMEP), College of Resources and Environment, Southwest University No. 2, Tiansheng Road, Beibei District, 400715 Chongqing, PR China
| | - Robert Hänsch
- Center of Molecular Ecophysiology (CMEP), College of Resources and Environment, Southwest University No. 2, Tiansheng Road, Beibei District, 400715 Chongqing, PR China; Institute for Plant Biology, Technische Universität Braunschweig, Humboldtstraße 1, D-38106 Braunschweig, Germany.
| | - Heinz Rennenberg
- Center of Molecular Ecophysiology (CMEP), College of Resources and Environment, Southwest University No. 2, Tiansheng Road, Beibei District, 400715 Chongqing, PR China
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17
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Piash MI, Uemura K, Itoh T, Iwabuchi K. Meat and bone meal biochar can effectively reduce chemical fertilizer requirements for crop production and impart competitive advantages to soil. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 336:117612. [PMID: 36967694 DOI: 10.1016/j.jenvman.2023.117612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 02/17/2023] [Accepted: 02/25/2023] [Indexed: 06/18/2023]
Abstract
Safe and effective circulation of nutrient-rich meat and bone meal (MBM) could become a carbon-based alternative to limited chemical fertilizers (CFs). Therefore, MBM biochars (MBMCs) were produced at 500, 800, and 1000 °C to evaluate their effects on plant growth, nutrient uptake, and soil characteristics. The results revealed that MBMC produced at 500 °C (MBMC500) contained the maximum amount of C, N, and phytoavailable P. All additional MBMC doses with recommended CF increased sorghum shoot yield (6.7-16%) and significantly improved P uptake. Additional experiments were conducted with decreasing doses of CF (100-0%) with or without MBMC500 (7 t/ha) to quantify its actual fertilizing value. MBMC500 showed the capability to reduce CF requirement by 20% without compromising the optimum yield (by 100% CF) while increasing pH, CEC, total-N, available-P, Mg, and microbial population of post-harvest soil. Although a δ15N analysis confirmed MBMC500 as a source of plant N, a reduction in N uptake by MBMC500 + 80% CF treatment compared to 100% CF might have limited further sorghum growth. Thus, future studies should concentrate on producing MBMC with better N utilization capability and achieving maximum CF reduction without negative environmental impacts.
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Affiliation(s)
- Mahmudul Islam Piash
- Graduate School of Agriculture, Hokkaido University, Kita 9, Nishi 9, Kita-Ku, Sapporo, Hokkaido, 060-8589, Japan
| | - Koki Uemura
- Graduate School of Agriculture, Hokkaido University, Kita 9, Nishi 9, Kita-Ku, Sapporo, Hokkaido, 060-8589, Japan
| | - Takanori Itoh
- Research Faculty of Agriculture, Hokkaido University, Kita 9, Nishi 9, Kita-Ku, Sapporo, Hokkaido, 060-8589, Japan
| | - Kazunori Iwabuchi
- Research Faculty of Agriculture, Hokkaido University, Kita 9, Nishi 9, Kita-Ku, Sapporo, Hokkaido, 060-8589, Japan.
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18
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Zhou W, Yan L, Fu Z, Guo H, Zhang W, Liu W, Ye Y, Long P. Increasing Planting Density and Reducing N Application Improves Yield and Grain Filling at Two Sowing Dates in Double-Cropping Rice Systems. PLANTS (BASEL, SWITZERLAND) 2023; 12:2298. [PMID: 37375923 DOI: 10.3390/plants12122298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 06/08/2023] [Accepted: 06/09/2023] [Indexed: 06/29/2023]
Abstract
Grain filling plays an important role in achieving high grain yield. Manipulating planting densities is recognized as a viable approach to compensate for the reduced yield caused by nitrogen reduction. Understanding the effects of nitrogen fertilization and planting density on superior and inferior grain filling is crucial to ensure grain security. Hence, double-cropping paddy field trials were conducted to investigate the effect of three nitrogen levels (N1, conventional nitrogen application; N2, 10% nitrogen reduction; N3, 20% nitrogen reduction) and three planting densities (D1, conventional planting density; D2, 20% density increase; D3, 40% density increase) on grain yield, yield formation, and grain-filling characteristics at two sowing dates (S1, a conventional sowing date, and S2, a date postponed by ten days) in 2019-2020. The results revealed that the annual yield of S1 was 8.5-14% higher than that of S2. Reducing nitrogen from N2 to N3 decreased the annual yield by 2.8-7.6%, but increasing planting densities from D1 to D3 significantly improved yield, by 6.2-19.4%. Furthermore, N2D3 had the highest yield, which was 8.7-23.8% higher than the plants that had received the other treatments. The rice yield increase was attributed to higher numbers of panicles per m2 and spikelets per panicle on the primary branches, influenced by superior grain filling. Increasing planting density and reducing nitrogen application significantly affected grain-filling weight, with the 40% density increase significantly facilitating superior and inferior grain filling with the same nitrogen level. Increasing density can improve superior grains while reducing nitrogen will decrease superior grains. These results suggest that N2D3 is an optimal strategy to increase yield and grain filling for double-cropping rice grown under two sowing-date conditions.
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Affiliation(s)
- Wentao Zhou
- Key Laboratory of Crop Physiology and Molecular Biology Ministry of Education, College of Agronomy, Hunan Agricultural University, Changsha 410128, China
| | - Lingling Yan
- Yiyang Academy of Agricultural Sciences, Yiyang 413499, China
| | - Zhiqiang Fu
- Key Laboratory of Crop Physiology and Molecular Biology Ministry of Education, College of Agronomy, Hunan Agricultural University, Changsha 410128, China
| | - Huijuan Guo
- Key Laboratory of Crop Physiology and Molecular Biology Ministry of Education, College of Agronomy, Hunan Agricultural University, Changsha 410128, China
| | - Wei Zhang
- Key Laboratory of Crop Physiology and Molecular Biology Ministry of Education, College of Agronomy, Hunan Agricultural University, Changsha 410128, China
| | - Wen Liu
- Key Laboratory of Crop Physiology and Molecular Biology Ministry of Education, College of Agronomy, Hunan Agricultural University, Changsha 410128, China
| | - Yumeng Ye
- Key Laboratory of Crop Physiology and Molecular Biology Ministry of Education, College of Agronomy, Hunan Agricultural University, Changsha 410128, China
| | - Pan Long
- Key Laboratory of Crop Physiology and Molecular Biology Ministry of Education, College of Agronomy, Hunan Agricultural University, Changsha 410128, China
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19
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Siddiqui MN, Pandey K, Bhadhury SK, Sadeqi B, Schneider M, Sanchez-Garcia M, Stich B, Schaaf G, Léon J, Ballvora A. Convergently selected NPF2.12 coordinates root growth and nitrogen use efficiency in wheat and barley. THE NEW PHYTOLOGIST 2023; 238:2175-2193. [PMID: 36808608 DOI: 10.1111/nph.18820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 02/13/2023] [Indexed: 05/04/2023]
Abstract
Understanding the genetic and molecular function of nitrate sensing and acquisition across crop species will accelerate breeding of cultivars with improved nitrogen use efficiency (NUE). Here, we performed a genome-wide scan using wheat and barley accessions characterized under low and high N inputs that uncovered the NPF2.12 gene, encoding a homolog of the Arabidopsis nitrate transceptor NRT1.6 and other low-affinity nitrate transporters that belong to the MAJOR FACILITATOR SUPERFAMILY. Next, it is shown that variations in the NPF2.12 promoter correlated with altered NPF2.12 transcript levels where decreased gene expression was measured under low nitrate availability. Multiple field trials revealed a significantly enhanced N content in leaves and grains and NUE in the presence of the elite allele TaNPF2.12TT grown under low N conditions. Furthermore, the nitrate reductase encoding gene NIA1 was up-regulated in npf2.12 mutant upon low nitrate concentrations, thereby resulting in elevated levels of nitric oxide (NO) production. This increase in NO correlated with the higher root growth, nitrate uptake, and N translocation observed in the mutant when compared to wild-type. The presented data indicate that the elite haplotype alleles of NPF2.12 are convergently selected in wheat and barley that by inactivation indirectly contribute to root growth and NUE by activating NO signaling under low nitrate conditions.
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Affiliation(s)
- Md Nurealam Siddiqui
- Institute of Crop Science and Resource Conservation (INRES)-Plant Breeding, University of Bonn, Katzenburgweg 5, Bonn, D-53115, Germany
- Department of Biochemistry and Molecular Biology, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, 1706, Bangladesh
| | - Kailash Pandey
- Institute of Crop Science and Resource Conservation (INRES)-Plant Breeding, University of Bonn, Katzenburgweg 5, Bonn, D-53115, Germany
| | - Suzan Kumer Bhadhury
- Institute of Crop Science and Resource Conservation (INRES)-Plant Breeding, University of Bonn, Katzenburgweg 5, Bonn, D-53115, Germany
| | - Bahman Sadeqi
- Institute of Crop Science and Resource Conservation (INRES)-Plant Breeding, University of Bonn, Katzenburgweg 5, Bonn, D-53115, Germany
| | - Michael Schneider
- Institute for Quantitative Genetics and Genomics of Plants, Heinrich Heine University, Düsseldorf, Germany
| | - Miguel Sanchez-Garcia
- Biodiversity and Crop Improvement Program, International Center for Agricultural Research in the Dry Areas (ICARDA), Rabat, 10101, Morocco
| | - Benjamin Stich
- Department of Biochemistry and Molecular Biology, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, 1706, Bangladesh
- Cluster of Excellence on Plant Sciences (CEPLAS), Heinrich Heine University, Düsseldorf, 40225, Germany
| | - Gabriel Schaaf
- Department of Plant Nutrition, Institute of Crop Science and Resource Conservation (INRES), University of Bonn, Karlrobert-Kreiten-Str. 13, Bonn, D-53115, Germany
| | - Jens Léon
- Institute of Crop Science and Resource Conservation (INRES)-Plant Breeding, University of Bonn, Katzenburgweg 5, Bonn, D-53115, Germany
- Field Lab Campus Klein-Altendorf, University of Bonn, Klein-Altendorf 2, Rheinbach, 53359, Germany
| | - Agim Ballvora
- Institute of Crop Science and Resource Conservation (INRES)-Plant Breeding, University of Bonn, Katzenburgweg 5, Bonn, D-53115, Germany
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20
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Duan M, Li Y, Zhu G, Wu X, Huang H, Qin J, Long S, Li X, Feng B, Qin S, Liu QH, Li C, Wang L, Li Q, He T, Wang Z. Soil chemistry, metabarcoding, and metabolome analyses reveal that a sugarcane- Dictyophora indusiata intercropping system can enhance soil health by reducing soil nitrogen loss. Front Microbiol 2023; 14:1193990. [PMID: 37303785 PMCID: PMC10249477 DOI: 10.3389/fmicb.2023.1193990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Accepted: 05/02/2023] [Indexed: 06/13/2023] Open
Abstract
Introduction Greater amounts of fertilizer are applied every year to meet the growing demand for food. Sugarcane is one of the important food sources for human beings. Methods Here, we evaluated the effects of a sugarcane-Dictyophora indusiata (DI) intercropping system on soil health by conducting an experiment with three different treatments: (1) bagasse application (BAS process), (2) bagasse + DI (DIS process), and (3) the control (CK). We then analyzed soil chemistry, the diversity of soil bacteria and fungi, and the composition of metabolites to clarify the mechanism underlying the effects of this intercropping system on soil properties. Results and discussion Soil chemistry analyses revealed that the content of several soil nutrients such as nitrogen (N) and phosphorus (P) was higher in the BAS process than in the CK. In the DIS process, a large amount of soil P was consumed by DI. At the same time, the urease activity was inhibited, thus slowing down the loss of soil in the DI process, while the activity of other enzymes such as β-glucosidase and laccase was increased. It was also noticed that the content of lanthanum and calcium was higher in the BAS process than in the other treatments, and DI did not significantly alter the concentrations of these soil metal ions. Bacterial diversity was higher in the BAS process than in the other treatments, and fungal diversity was lower in the DIS process than in the other treatments. The soil metabolome analysis revealed that the abundance of carbohydrate metabolites was significantly lower in the BAS process than in the CK and the DIS process. The abundance of D(+)-talose was correlated with the content of soil nutrients. Path analysis revealed that the content of soil nutrients in the DIS process was mainly affected by fungi, bacteria, the soil metabolome, and soil enzyme activity. Our findings indicate that the sugarcane-DIS intercropping system can enhance soil health.
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Affiliation(s)
- Mingzheng Duan
- Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences/Sugarcane Research Center, Chinese Academy of Agricultural Science/Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture, Nanning, China
- Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, Nanning, China
| | - Yijie Li
- Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences/Sugarcane Research Center, Chinese Academy of Agricultural Science/Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture, Nanning, China
| | - Guanghu Zhu
- Center for Applied Mathematics of Guangxi (GUET), Guilin, China
| | - Xiaojian Wu
- Guangxi Academy of Agricultural Sciences, Nanning, China
| | - Hairong Huang
- Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences/Sugarcane Research Center, Chinese Academy of Agricultural Science/Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture, Nanning, China
| | - Jie Qin
- Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences/Sugarcane Research Center, Chinese Academy of Agricultural Science/Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture, Nanning, China
| | - Shengfeng Long
- Guangxi Academy of Agricultural Sciences, Nanning, China
| | - Xiang Li
- Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences/Sugarcane Research Center, Chinese Academy of Agricultural Science/Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture, Nanning, China
| | - Bin Feng
- Laibin Academy of Agricultural Sciences, Laibin, China
| | - Sunqian Qin
- Laibin Academy of Agricultural Sciences, Laibin, China
| | - Qi-Huai Liu
- Center for Applied Mathematics of Guangxi (GUET), Guilin, China
| | - Changning Li
- Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences/Sugarcane Research Center, Chinese Academy of Agricultural Science/Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture, Nanning, China
| | - Lingqiang Wang
- Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, Nanning, China
| | - Qing Li
- Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, Nanning, China
| | - Tieguang He
- Guangxi Academy of Agricultural Sciences, Nanning, China
| | - Zeping Wang
- Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences/Sugarcane Research Center, Chinese Academy of Agricultural Science/Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture, Nanning, China
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21
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Cui W, Li R, Fan Z, Wu L, Zhao X, Wei G, Shu D. Weak environmental adaptation of rare phylotypes sustaining soil multi-element cycles in response to decades-long fertilization. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 871:162063. [PMID: 36746286 DOI: 10.1016/j.scitotenv.2023.162063] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 01/29/2023] [Accepted: 02/02/2023] [Indexed: 06/18/2023]
Abstract
Deciphering the ecological role of soil communities in the maintenance of multiple ecosystem functions is pivotal for the conservation and sustainability of soil biodiversity. However, few studies have investigated niche differentiation of abundant and rare microbiota, as well as their contributions to multiple soil elemental cycles, particularly in agroecosystems that have received decades of intense fertilization. Here, we characterized the environmental thresholds and phylogenetic signals for the environmental adaptation of both abundant and rare microbial subcommunities via amplicon sequencing and metagenomic sequencing and explored their importance in sustaining soil multiple nutrient cycling in agricultural fields that were fertilized for two decades. The results showed that rare taxa exhibited narrower niche breadths and weaker phylogenetic signals than abundant species. The assembly of abundant subcommunity was shaped predominantly by dispersal limitation (explained 71.1 % of the variation in bacteria) and undominated processes (explained 75 % of the variation in fungi), whereas the assembly of rare subcommunity was dominated by homogeneous selection process (explained 100 % of the variation in bacteria and 60 % of the variation in fungi). Soil ammonia nitrogen was the leading factor mediating the balance between stochastic and deterministic processes in both abundant (R2 = 0.15, P < 0.001) and rare (R2 = 0.08, P < 0.001) bacterial communities. Notably, the rare biosphere largely contributed to key soil processes such as carbon (R2bacteria = 0.03, P < 0.05; R2fungi = 0.05, P < 0.05) and nitrogen (R2bacteria = 0.03, P < 0.05; R2fungi = 0.17, P < 0.001) cycling. Collectively, these findings facilitate our understanding of the maintenance of rhizosphere bacterial and fungal diversity in response to agricultural fertilization and highlight the key role of rare taxa in sustaining agricultural ecosystem functions.
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Affiliation(s)
- Weili Cui
- Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, Yangling, Shaanxi 712100, China; State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Ruochen Li
- Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, Yangling, Shaanxi 712100, China; State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Zhen Fan
- Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, Yangling, Shaanxi 712100, China; State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Likun Wu
- Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, Yangling, Shaanxi 712100, China; State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Xining Zhao
- Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, 712100 Yangling, Shaanxi, China; Institute of Soil and Water Conservation, Northwest A&F University, 712100 Yangling, Shaanxi, China
| | - Gehong Wei
- Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, Yangling, Shaanxi 712100, China; State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Duntao Shu
- Shaanxi Key Laboratory of Agricultural and Environmental Microbiology, Yangling, Shaanxi 712100, China; State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling, Shaanxi 712100, China.
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22
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Yang X, Wan Q, Wu D, Wang J, Abbas T, Zhang Q. The impact of novel azotobacter Bacillus sp. T28 combined sea buckthorn pomace on microbial community structure in paddy soil. ENVIRONMENTAL RESEARCH 2023; 224:115548. [PMID: 36828254 DOI: 10.1016/j.envres.2023.115548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 02/15/2023] [Accepted: 02/21/2023] [Indexed: 06/18/2023]
Abstract
Nitrogen (N) fertilizer application is an essential part of agricultural production in order to improve rice yields. However, long-term irrational application and low utilization of N fertilizer have caused a series of environmental problems. Biofertilizer is considered an effective alternative to N fertilizer. In this study, the effect of biofertilizer made of diazotrophic bacteria Bacillus sp. T28 combined with sea buckthorn pomace on the soil N changes and microbial community structure was conducted. Compared to CK, NO3--N content decreased 33.1%-43.8% and the rate of N2O release decreased 8-26 times under different fertilizer treatments during incubation of 0-7 days. On the contrary, NH4+-N in T28 with or without sea buckthorn pomace treatments increased by 56.5-118.8% during incubation of 7-14 days. The results indicated that this biofertilizer reduced the environmental risk associated with the accumulation of NO3--N in paddy soil and the release of N2O to the atmosphere and maintained the soil available N supply capacity. Besides, applying Bacillus T28 with sea buckthorn pomace increased the abundance of soil N functional genes such as nifH, narG, nirS, nirK, and nosZ. The 13C-PLFAs results demonstrated that this biofertilizer improves soil microbial community diversity, nutrient turnover rate and ecosystem stability by altering soil pH and total carbon (TC). In conclusion, Bacillus sp. T28 combined with sea buckthorn pomace regulated the indigenous soil microbial community structure and mitigated the environmental risk of conventional N fertilization in agroecosystems.
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Affiliation(s)
- Xiaoyu Yang
- Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, Zhejiang University, Hangzhou, 310058, China
| | - Qing Wan
- Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, Zhejiang University, Hangzhou, 310058, China
| | - Dan Wu
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China
| | - Jingwen Wang
- Agricultural Technology Extension Center of Hangzhou, Hangzhou, 310020, China
| | - Touqeer Abbas
- Department of Soil, Water, and Climate, University of Minnesota, Twin, 637009, USA
| | - Qichun Zhang
- Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, Zhejiang University, Hangzhou, 310058, China.
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23
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Liu L, Xu W, Wen Z, Liu P, Xu H, Liu S, Lu X, Zhong B, Guo Y, Lu X, Zhao Y, Zhang X, Wang S, Vitousek PM, Liu X. Modeling global oceanic nitrogen deposition from food systems and its mitigation potential by reducing overuse of fertilizers. Proc Natl Acad Sci U S A 2023; 120:e2221459120. [PMID: 37068247 PMCID: PMC10151515 DOI: 10.1073/pnas.2221459120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 03/06/2023] [Indexed: 04/19/2023] Open
Abstract
Growing population and consumption pose unprecedented demands on food production. However, ammonia emissions mainly from food systems increase oceanic nitrogen deposition contributing to eutrophication. Here, we developed a long-term oceanic nitrogen deposition dataset (1970 to 2018) with updated ammonia emissions from food systems, evaluated the impact of ammonia emissions on oceanic nitrogen deposition patterns, and discussed the potential impact of nitrogen fertilizer overuse. Based on the chemical transport modeling approach, oceanic ammonia-related nitrogen deposition increased by 89% globally between 1970 and 2018, and now, it exceeds oxidized nitrogen deposition by over 20% in coastal regions including China Sea, India Coastal, and Northeastern Atlantic Shelves. Approximately 38% of agricultural nitrogen fertilizer was excessive, which corresponds to 15% of global oceanic ammonia-related nitrogen deposition. Policymakers and water quality managers need to pay increasingly more attention to ammonia associated with food production if the goal of reducing coastal nitrogen pollution is to be achieved for Sustainable Development Goals.
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Affiliation(s)
- Lei Liu
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou730000, China
| | - Wen Xu
- Key Laboratory of Plant-Soil Interactions of Ministry of Education, Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, China Agricultural University, Beijing100193, China
| | - Zhang Wen
- Key Laboratory of Plant-Soil Interactions of Ministry of Education, Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, China Agricultural University, Beijing100193, China
| | - Pu Liu
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou730000, China
| | - Hang Xu
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou730000, China
| | - Sheng Liu
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou730000, China
| | - Xiankai Lu
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou510650, China
| | - Buqing Zhong
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou510650, China
| | - Yixin Guo
- Laboratory for Climate and Ocean-Atmosphere Studies, Department of Atmospheric and Oceanic Sciences, School of Physics, Peking University, Beijing100871, China
| | - Xiao Lu
- School of Atmospheric Sciences, Sun Yat-sen University, Zhuhai510275, China
| | - Yuanhong Zhao
- College of Oceanic and Atmospheric Sciences, Ocean University of China, Qingdao266100, China
| | - Xiuying Zhang
- International Institute for Earth System Science, Nanjing University, Nanjing210023, China
| | - Songhan Wang
- Key Laboratory of Crop Physiology and Ecology in Southern China, Nanjing Agricultural University, Nanjing210095, China
| | | | - Xuejun Liu
- Key Laboratory of Plant-Soil Interactions of Ministry of Education, Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, China Agricultural University, Beijing100193, China
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24
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Li T, Zhang B, Du A, Yang S, Huang K, Peng F, Xiao Y. Dynamic Monitoring of Nutrition Inputs and Fertility Evaluation during a Decade in the Main Peach-Producing Areas of Shandong Province, China. PLANTS (BASEL, SWITZERLAND) 2023; 12:1725. [PMID: 37111948 PMCID: PMC10145419 DOI: 10.3390/plants12081725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 04/09/2023] [Accepted: 04/15/2023] [Indexed: 06/19/2023]
Abstract
The main peach-producing area in Shandong is an important peach fruit-producing area in China. Understanding the nutritional properties of the soil in peach orchards helps us to understand the evolution of soil properties and adjust management methods in a timely manner. This study focuses on 52 peach orchards in the main peach-producing area in Shandong as the research object. The spatiotemporal changes in soil traits and their influential factors were studied in depth, and the changes in soil fertility were effectively evaluated. The results showed that the input of nitrogen, phosphorus and potassium from organic fertilizer in 2021 was significantly higher than that in 2011, while the input of fertilizer in 2011 was significantly higher than that in 2021. Compared with traditional parks, both organic fertilizer inputs and chemical fertilizer inputs in demonstration parks showed a significant downwards trend. There was no significant change in pH values between 2011 and 2021. In 2021, the soil organic matter (SOM) contents of the 0-20 cm and 20-40 cm layers were 24.17 g·kg-1 and 23.38 g·kg-1, respectively, an increase of 29.3% and 78.47% over the values measured in 2011. Compared with 2011, the content of soil alkaloid nitrogen (AN) decreased significantly in 2021, and the contents of available phosphorus (AP) and available potassium (AK) in the soil increased significantly. According to the calculation results of the comprehensive fertility index (IFI) value, we found that in 2021, compared with 2011, the quality of soil fertility improved, most of which was at the medium and high levels. The research results show that the fertilizer-saving and synergistic approach in peach orchards in China significantly improved the soil nutrition. In the future, research on suitable comprehensive technologies should be strengthened in the management of peach orchards.
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Affiliation(s)
| | | | | | | | | | - Futian Peng
- Correspondence: (F.P.); (Y.X.); Tel.: +86-135-6382-1651 (F.P.); +86-151-6387-3786 (Y.X.)
| | - Yuansong Xiao
- Correspondence: (F.P.); (Y.X.); Tel.: +86-135-6382-1651 (F.P.); +86-151-6387-3786 (Y.X.)
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25
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Liu X, Zhang D, Wu H, Elser JJ, Yuan Z. Uncovering the spatio-temporal dynamics of crop-specific nutrient budgets in China. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 340:117904. [PMID: 37084647 DOI: 10.1016/j.jenvman.2023.117904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Revised: 04/07/2023] [Accepted: 04/08/2023] [Indexed: 05/03/2023]
Abstract
Nitrogen (N) and phosphorus (P) are two critical nutrients for agroecosystems. In meeting food demands, human use of both nutrients has crossed planetary boundaries for sustainability. Further, there has been a dramatic shift in their relative inputs and outputs, which may generate strong N:P imbalances. Despite enormous efforts on agronomic N and P budgets, the spatio-temporal characteristics of different crop types in using nutrients are unknown as are patterns in the stoichiometric coupling of these nutrients. Thus, we analyzed the annual crop-specific N and P budgets and their stoichiometric relations for producing ten major crops at the provincial level of China during 2004-2018. Results show that, China has generally witnessed excessive N and P input over the past 15 years, with the N balance remaining stable while the P balance increasing by more than 170%, thus resulting in a decline in the N:P mass ratios from 10.9 in 2004 to 3.8 in 2018. Crop-aggregated nutrient use efficiency (NUE) of N has increased by 10% in these years while most crops have shown a decreasing trend of this indicator for P, which reduced NUE of P from 75% to 61% during this period. At the provincial level, the nutrient fluxes of Beijing and Shanghai have obviously declined, while the nutrient fluxes of provinces such as Xinjiang and Inner Mongolia have increased significantly. Although N management has made progress, P management should be further explored in the future due to eutrophication concerns. More importantly, N and P management strategies for sustainable agriculture in China should take account of not only the absolute nutrient use, but also their stoichiometric balance for different crops in different locations.
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Affiliation(s)
- Xin Liu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Dingming Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Huijun Wu
- School of Earth and Environment, Anhui University of Science and Technology, Huainan, 232001, China
| | - James J Elser
- School of Life Sciences, Arizona State University, Tempe, AZ, 85287, USA; Flathead Lake Biological Station, University of Montana, Polson, MT, 59860, USA
| | - Zengwei Yuan
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China.
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26
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Jiang L, Yu J, Wang S, Wang X, Schwark L, Zhu G. Complete ammonia oxidization in agricultural soils: High ammonia fertilizer loss but low N 2 O production. GLOBAL CHANGE BIOLOGY 2023; 29:1984-1997. [PMID: 36607170 DOI: 10.1111/gcb.16586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 12/22/2022] [Indexed: 05/28/2023]
Abstract
The contribution of agriculture to the sustainable development goals requires climate-smart and profitable farm innovations. Increasing the ammonia fertilizer applications to meet the global food demands results in high agricultural costs, environmental quality deterioration, and global warming, without a significant increase in crop yield. Here, we reported that a third microbial ammonia oxidation process, complete ammonia oxidation (comammox), is contributing to a significant ammonia fertilizer loss (41.9 ± 4.8%) at the rate of 3.53 ± 0.55 mg N kg-1 day-1 in agricultural soils around the world. The contribution of comammox to ammonia fertilizer loss, occurring mainly in surface agricultural soil profiles (0-0.2 m), was equivalent to that of bacterial ammonia oxidation (48.6 ± 4.5%); both processes were significantly more important than archaeal ammonia oxidation (9.5 ± 3.6%). In contrast, comammox produced less N2 O (0.98 ± 0.44 μg N kg-1 day-1 , 11.7 ± 3.1%), comparable to that produced by archaeal ammonia oxidation (16.4 ± 4.4%) but significantly lower than that of bacterial ammonia oxidation (72.0 ± 5.1%). The efficiency of ammonia conversion to N2 O by comammox (0.02 ± 0.01%) was evidently lower than that of bacterial (0.24 ± 0.06%) and archaeal (0.16 ± 0.04%) ammonia oxidation. The comammox rate increased with increasing soil pH values, which is the only physicochemical characteristic that significantly influenced both comammox bacterial abundance and rates. Ammonia fertilizer loss, dominated by comammox and bacterial ammonia oxidation, was more intense in soils with pH >6.5 than in soils with pH <6.5. Our results revealed that comammox plays a vital role in ammonia fertilizer loss and sustainable development in agroecosystems that have been previously overlooked for a long term.
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Affiliation(s)
- Liping Jiang
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Jie Yu
- School of Environment and Civil Engineering, Jiangnan University, Wuxi, China
| | - Shanyun Wang
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Xiaomin Wang
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Lorenz Schwark
- Organic Geochemistry Unit, Kiel University, Kiel, Germany
| | - Guibing Zhu
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
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Shi CH, Wang XQ, Jiang S, Zhang LQ, Luo J. Revealing the role of the rhizosphere microbiota in reproductive growth for fruit productivity when inorganic fertilizer is partially replaced by organic fertilizer in pear orchard fields. Microb Biotechnol 2023; 16:1373-1392. [PMID: 36965164 DOI: 10.1111/1751-7915.14253] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 03/08/2023] [Accepted: 03/12/2023] [Indexed: 03/27/2023] Open
Abstract
In order to address the global crisis in pear productivity, there has been increased attention given to advocating for the use of organic fertilizers. As part of this effort, researchers have been investigating the microbial properties of organic fertilizers to better understand their potential impact on fruit productivity. Our research focused specifically on the impact of four different ratios of sheep manure (SM) and chemical fertilizers (CF) on pear productivity. We found that replacing CF with SM resulted in a proliferation of gammaproteobacteria, Chlamydiae, Bastocatellia and Clostridia in the soil rhizosphere, which is the region around the roots of plants where most nutrient uptake occurs. Using redundancy analysis, we were able to determine that SM was particularly effective at promoting the growth of gammaproteobacteria and clostridia, which were associated with C:N ratios around 14:1 as well as the availability of K, Fe, Zn and Cu. This combination of factors was conducive to a transition from vegetative growth to reproductive growth, resulting in an increase in pear production from 43 to 56 tons per hectare. We also discovered that Blastociella acts as a buffering system in regulating soil acidity. Taken together, our findings indicate that a combination of SM and CF can improve the abundance of beneficial bacteria in the rhizosphere, leading to an increase in pear productivity.
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Affiliation(s)
- Chun-Hui Shi
- Forest & Fruit Tree Research Institute, Shanghai Academy of Agriculture Sciences, Shanghai, China
- Shanghai Key Laboratory of Facility Horticulture Technology, Shanghai, China
| | - Xiao-Qing Wang
- Forest & Fruit Tree Research Institute, Shanghai Academy of Agriculture Sciences, Shanghai, China
- Shanghai Key Laboratory of Facility Horticulture Technology, Shanghai, China
| | - Shuang Jiang
- Forest & Fruit Tree Research Institute, Shanghai Academy of Agriculture Sciences, Shanghai, China
- Shanghai Key Laboratory of Facility Horticulture Technology, Shanghai, China
| | - Li-Qing Zhang
- Forest & Fruit Tree Research Institute, Shanghai Academy of Agriculture Sciences, Shanghai, China
- Shanghai Key Laboratory of Facility Horticulture Technology, Shanghai, China
| | - Jun Luo
- Forest & Fruit Tree Research Institute, Shanghai Academy of Agriculture Sciences, Shanghai, China
- Shanghai Key Laboratory of Facility Horticulture Technology, Shanghai, China
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Li B, Ma X, Zhao B, Wang L, Ata-Ul-Karim ST. In-season assessment of agronomic nitrogen use efficiency and its components in winter wheat using critical nitrogen dilution curve. FRONTIERS IN PLANT SCIENCE 2023; 14:1128799. [PMID: 37008507 PMCID: PMC10050426 DOI: 10.3389/fpls.2023.1128799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Accepted: 02/20/2023] [Indexed: 06/19/2023]
Abstract
Accurate and timely nitrogen (N) scheduling requires knowledge of in-season crop N deficit. Therefore, understanding the association between crop growth and crop N demand during its growth period is imperative for fine-tuning N scheduling decisions to actual crop N demand and to enhance N use efficiency. The concept of the critical N dilution curve has been employed to assess and quantify the intensity and time of crop N deficit. However, research regarding the association between crop N deficit and N use efficiency in wheat is limited. The present study was carried out to determine whether there are relationships between the accumulated nitrogen deficit (Nand) and agronomic N use efficiency (AEN) as well as with its components (N fertilizer recovery efficiency (REN) and N fertilizer physiological efficiency (PEN)) of winter wheat and to explore the potential capacity of Nand for predicting AEN and its components. Data acquired from five variable N rates (0, 75, 150, 225, and 300 kg ha-1) field experiments using six winter wheat cultivars were used to establish and validate the relationships between Nand and AEN, REN, and PEN. The results indicated that plant N concentration in winter wheat was significantly affected by N application rates. Nand varied from -65.73 to 104.37 kg ha-1 after Feekes stage 6 under different N application rates. The AEN and its components were also affected by cultivars, N levels, seasons, and growth stages. A positive correlation was observed between Nand, AEN, and its components. Validation using an independent data set showed the robustness of the newly developed empirical models to accurately predict AEN, REN, and PEN with an RMSE of 3.43 kg kg-1, 4.22%, and 3.67 kg kg-1 and RRMSE of 17.53%, 12.46%, and 13.17%, respectively. This indicates that Nand has the potential to predict AEN and its components during the growth period of winter wheat. The findings will assist in improving in-season N use efficiency by fine-tuning N scheduling decisions in winter wheat cultivation.
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Affiliation(s)
- Bing Li
- International School, Huanghe Science & Technology College, Zhengzhou, Henan, China
| | - Xiaodong Ma
- International School, Huanghe Science & Technology College, Zhengzhou, Henan, China
| | - Ben Zhao
- Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences, Xinxiang, Henan, China
| | - Laigang Wang
- International School, Huanghe Science & Technology College, Zhengzhou, Henan, China
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Alam I, Zhang H, Du H, Rehman NU, Manghwar H, Lei X, Batool K, Ge L. Bioengineering Techniques to Improve Nitrogen Transformation and Utilization: Implications for Nitrogen Use Efficiency and Future Sustainable Crop Production. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:3921-3938. [PMID: 36842151 DOI: 10.1021/acs.jafc.2c08051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Nitrogen (N) is crucial for plant growth and development, especially in physiological and biochemical processes such as component of different proteins, enzymes, nucleic acids, and plant growth regulators. Six categories, such as transporters, nitrate absorption, signal molecules, amino acid biosynthesis, transcription factors, and miscellaneous genes, broadly encompass the genes regulating NUE in various cereal crops. Herein, we outline detailed research on bioengineering modifications of N metabolism to improve the different crop yields and biomass. We emphasize effective and precise molecular approaches and technologies, including N transporters, transgenics, omics, etc., which are opening up fascinating opportunities for a complete analysis of the molecular elements that contribute to NUE. Moreover, the detection of various types of N compounds and associated signaling pathways within plant organs have been discussed. Finally, we highlight the broader impacts of increasing NUE in crops, crucial for better agricultural yield and in the greater context of global climate change.
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Affiliation(s)
- Intikhab Alam
- College of Forestry and Landscape Architecture, Department of Grassland Science, South China Agricultural University (SCAU), Guangzhou 510642, China
- College of Life Sciences, SCAU, Guangzhou 510642, China
- Guangdong Subcenter of the National Center for Soybean Improvement, SCAU, Guangzhou 510642, China
| | - Hanyin Zhang
- College of Forestry and Landscape Architecture, Department of Grassland Science, South China Agricultural University (SCAU), Guangzhou 510642, China
- Guangdong Subcenter of the National Center for Soybean Improvement, SCAU, Guangzhou 510642, China
| | - Huan Du
- College of Forestry and Landscape Architecture, Department of Grassland Science, South China Agricultural University (SCAU), Guangzhou 510642, China
- College of Life Sciences, SCAU, Guangzhou 510642, China
- Guangdong Subcenter of the National Center for Soybean Improvement, SCAU, Guangzhou 510642, China
| | - Naveed Ur Rehman
- Guangdong Subcenter of the National Center for Soybean Improvement, SCAU, Guangzhou 510642, China
| | - Hakim Manghwar
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Forestry and Landscape Architecture, SCAU, Guangzhou 510642, China
| | - Xiao Lei
- College of Forestry and Landscape Architecture, Department of Grassland Science, South China Agricultural University (SCAU), Guangzhou 510642, China
- Guangdong Subcenter of the National Center for Soybean Improvement, SCAU, Guangzhou 510642, China
| | - Khadija Batool
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Liangfa Ge
- College of Forestry and Landscape Architecture, Department of Grassland Science, South China Agricultural University (SCAU), Guangzhou 510642, China
- Guangdong Subcenter of the National Center for Soybean Improvement, SCAU, Guangzhou 510642, China
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30
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Vejan P, Abdullah R, Ahmad N, Khadiran T. Biochar and activated carbon derived from oil palm kernel shell as a framework for the preparation of sustainable controlled release urea fertiliser. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:38738-38750. [PMID: 36585594 DOI: 10.1007/s11356-022-24970-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Accepted: 12/20/2022] [Indexed: 06/17/2023]
Abstract
The oil palm kernel shell biochar (OPKS-B) and oil palm kernel shell activated carbon (OPKS-AC) were used as a framework to entrap urea using adsorption method. Batch adsorption studies were performed to gauge the influence of contact time on the adsorption of urea onto both OPKS-B and OPKS-AC. To evaluate the physicochemical traits of the studied materials, energy dispersive X-ray spectrometer (EDS), N2-sorption, X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FESEM), elemental analysis, differential thermal gravity (TG/DTG) and thermal gravity were applied. Result shows OPKS-AC has a better sorption capacity for urea compared to OPKS-B. The Langmuir isotherm model better justified the sorption isotherms of urea. For the adsorption process for both OPKS-B and OPKS-AC, the pseudo-second-order kinetic model was picked as it best fitted the experimental sorption outcome with the superior R2 values of > 65.1% and > 74.5%, respectively. The outcome of the experiments showcased that the maximum monolayer adsorption capacity of the OPKS-AC towards urea was 239.68 mg/g. OPKS-AC has showed promising attributes to be picked as an organic framework in the production of controlled release urea fertiliser for a greener and environmentally friendly agricultural practices.
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Affiliation(s)
- Pravin Vejan
- Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Rosazlin Abdullah
- Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia.
- Centre for Research in Biotechnology for Agriculture (CEBAR), Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia.
| | - Noraini Ahmad
- Centre for Fundamental and Frontier Sciences in Nanostructure Self-Assembly (FSSA), Department of Chemistry, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia.
| | - Tumirah Khadiran
- Forest Products Division Forest Research Institute Malaysia, 52109, Kepong, Selangor, Malaysia
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Zheng J, Canarini A, Fujii K, Mmari WN, Kilasara MM, Funakawa S. Cropland intensification mediates the radiative balance of greenhouse gas emissions and soil carbon sequestration in maize systems of sub-Saharan Africa. GLOBAL CHANGE BIOLOGY 2023; 29:1514-1529. [PMID: 36462165 DOI: 10.1111/gcb.16550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Accepted: 11/29/2022] [Indexed: 05/28/2023]
Abstract
Sub-Saharan Africa (SSA) must undertake proper cropland intensification for higher crop yields while minimizing climate impacts. Unfortunately, no studies have simultaneously quantified greenhouse gas (GHG; CO2 , CH4 , and N2 O) emissions and soil organic carbon (SOC) change in SSA croplands, leaving it a blind spot in the accounting of global warming potential (GWP). Here, based on 2-year field monitoring of soil emissions of CO2 , CH4 , and N2 O, as well as SOC changes in two contrasting soil types (sandy vs. clayey), we provided the first, full accounting of GWP for maize systems in response to cropland intensifications (increasing nitrogen rates and in combination with crop residue return) in SSA. To corroborate our field observations on SOC change (i.e., 2-year, a short duration), we implemented a process-oriented model parameterized with field data to simulate SOC dynamic over time. We further tested the generality of our findings by including a literature synthesis of SOC change across maize-based systems in SSA. We found that nitrogen application reduced SOC loss, likely through increased biomass yield and consequently belowground carbon allocation. Residue return switched the direction of SOC change from loss to gain; such a benefit (SOC sequestration) was not compromised by CH4 emissions (negligible) nor outweighed by the amplified N2 O emissions, and contributed to negative net GWP. Overall, we show encouraging results that, combining residue and fertilizer-nitrogen input allowed for sequestering 82-284 kg of CO2 -eq per Mg of maize grain produced across two soils. All analyses pointed to an advantage of sandy over clayey soils in achieving higher SOC sequestration targets, and thus call for a re-evaluation on the potential of sandy soils in SOC sequestration across SSA croplands. Our findings carry important implications for developing viable intensification practices for SSA croplands in mitigating climate change while securing food production.
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Affiliation(s)
- Jinsen Zheng
- Graduate School of Agriculture, Kyoto University, Kyoto, Japan
- Forestry and Forest Products Research Institute, Tsukuba, Japan
| | | | - Kazumichi Fujii
- Forestry and Forest Products Research Institute, Tsukuba, Japan
| | - William N Mmari
- Tanzania Agricultural Research Institute (TARI), Mbeya, Tanzania
| | - Method M Kilasara
- Department of Soil and Geological Sciences, Sokoine University of Agriculture, Morogoro, Tanzania
| | - Shinya Funakawa
- Graduate School of Agriculture, Kyoto University, Kyoto, Japan
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Raza ST, Zhu B, Yao Z, Wu J, Chen Z, Ali Z, Tang JL. Impacts of vermicompost application on crop yield, ammonia volatilization and greenhouse gases emission on upland in Southwest China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 860:160479. [PMID: 36435259 DOI: 10.1016/j.scitotenv.2022.160479] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 11/10/2022] [Accepted: 11/21/2022] [Indexed: 06/16/2023]
Abstract
Ammonia (NH3) volatilization and greenhouse gas (GHG) emission are important environment pollution sources in upland agro-ecosystems. Vermicompost was used for amending purple soil and comparing NH3 and GHG emissions. A field experiment was conducted with a comparison of organic and inorganic fertilizers in a wheat-maize rotation system in the Sichuan Basin, China. The five treatments were conventional inorganic fertilizers, NPK as control; vermicompost prepared with cow dung (VCM); and pig manure (VPM); cow dung and pig manure vermicompost, respectively (VCMNPK, VPMNPK). Total nitrogen rates of all treatments were the same. Soil NH3 volatilization and GHG emissions were monitored with the static chamber method. The results showed that NH3 volatilization occurred in the first two weeks following nitrogen (N) fertilization. The cumulative fluxes of NH3 recorded in the NPK, VCM, VPM, VCMNPK, and VPMNPK treatments were 15.4, 5.7, 6.3, 10.32, and 10.29 kg N ha-1 yr-1, respectively, in the winter and 4.8, 5.5, 19.83, 12.8, and 11.9 kg N ha-1 yr-1 respectively, in the summer. The global warming potential (GWP) 773.6 and 803.9 g CO2-eq m-2 in VCM and VPM, respectively, during the wheat season 540.6 and 576.2 g CO2-eq m-2, respectively, during the maize season. The GWPs in NPK treatment were 1032.4 and 570.7 g CO2-eq m-2 during the wheat and maize seasons, respectively. The increasing effects of nutrient loops, particularly 18 % soil total nitrogen (TN) and 31 % soil organic carbon (SOC) in VCM, and crop productivity of vermicompost treatments during the wheat-maize rotation had been evaluated. This study recommends that VCM can be considered as a better organic amendment, promoting plant growth while decreasing the environmental costs of gas emissions.
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Affiliation(s)
- Syed Turab Raza
- Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, Sichuan, China; University of Chinese Academy of Sciences, Beijing 100049, China; Yunnan Key Laboratory of Plant Reproductive Adaptation and Evolutionary Ecology, Yunnan University, Kunming 650500, China; Key Laboratory of Soil Ecology and Health in Universities of Yunnan Province, College of Ecology and Environmental Sciences, Yunnan University, Kunming 650500, China.
| | - Bo Zhu
- Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, Sichuan, China.
| | - Zhiyuan Yao
- Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, Sichuan, China.
| | - Jianping Wu
- Yunnan Key Laboratory of Plant Reproductive Adaptation and Evolutionary Ecology, Yunnan University, Kunming 650500, China; Key Laboratory of Soil Ecology and Health in Universities of Yunnan Province, College of Ecology and Environmental Sciences, Yunnan University, Kunming 650500, China
| | - Zhe Chen
- Yunnan Key Laboratory of Plant Reproductive Adaptation and Evolutionary Ecology, Yunnan University, Kunming 650500, China; Key Laboratory of Soil Ecology and Health in Universities of Yunnan Province, College of Ecology and Environmental Sciences, Yunnan University, Kunming 650500, China
| | - Zulfiqar Ali
- Laboratory of Environmental Health & Wildlife, Department of Zoology, University of the Punjab, Lahore 54590, Pakistan
| | - Jia Liang Tang
- Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, Sichuan, China
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33
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Koritschoner JJ, Whitworth Hulse JI, Cuchietti A, Arrieta EM. Spatial patterns of nutrients balance of major crops in Argentina. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 858:159863. [PMID: 36397316 DOI: 10.1016/j.scitotenv.2022.159863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2022] [Revised: 10/11/2022] [Accepted: 10/27/2022] [Indexed: 06/16/2023]
Abstract
Argentina has a long tradition of agricultural systems that use few amounts of fertilizers. However, the crop nutrient balance remains unknown throughout the country. In this study, we estimated the nitrogen (N), phosphorus (P) and sulfur (S) balance at national and subnational scale of the six major grain crops: soybean, maize, wheat, sunflower, barley and sorghum. We found a negative spatio-temporal NPS balance with an annual average deficit of -22.4 kg ha-1 year-1 for N, -6.9 kg ha-1 year-1 for P and -2.1 kg ha-1 year-1 for S. Considering the whole agricultural area analyzed, the balance represented a mean annual negative net outflow of 612 thousand tons (kT) of N, 166 kT of P and 58 kT of S. The nutrient balance was not homogeneous across the country, with significant differences among the three major productive regions: i) the Pampean nucleus region (-32.2, -8.5, -2.92 kg ha-1 year-1, for N, P and S respectively) ii) the non-nucleus Pampean region (-14.3, -3.7, -2.03 kg ha-1 year-1 for N, P and S respectively), and iii) extra-Pampean region (-22.4, -6.3, -2.13 kg ha-1 year-1 for N, P and S respectively). Remarkably, despite having the highest N and P application rate, the Pampean nucleus region has the largest deficit of the analyzed nutrients. Soybean was the main driver of the nutrient mining in the country, accounting for 62 % of the NPS deficits at national scale (-418 kT N year-1, -120 kT P year-1 and -35 kT S year-1). Our findings suggest that the current fertilization practices applied to the major extensive crops in Argentina are far from being sufficient to supply the nutrients they demand, even cultivating soybean that is a N-fixing crop. These results highlight that Argentine main crops' high productivity is reached at the expense of soil nutrient depletion.
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Affiliation(s)
- Julius J Koritschoner
- Departamento de Recursos Naturales, Facultad de Ciencias Agropecuarias, Universidad Nacional de Córdoba, Córdoba, Argentina; Instituto Gulich, Comisión Nacional de Actividades Espaciales, Córdoba, Argentina; Instituto Académico Pedagógico de Ciencias Básicas y Aplicadas, Universidad Nacional de Villa María, Argentina
| | - Juan I Whitworth Hulse
- Grupo de Estudios Ambientales - IMASL, Universidad Nacional de San Luis & CONICET, San Luis, Argentina
| | - Anibal Cuchietti
- Ministerio de Ambiente y Desarrollo Sostenible (MAyDS), Dirección Nacional de Bosques, Ciudad Autónoma de Buenos Aires (CABA), Argentina
| | - Ezequiel M Arrieta
- Instituto Multidisciplinario de Biología Vegetal (IMBIV), CONICET y Universidad Nacional de Córdoba, Argentina.
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Chen B, Ren C, Wang C, Duan J, Reis S, Gu B. Driving forces of nitrogen use efficiency in Chinese croplands on county scale. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 316:120610. [PMID: 36356887 DOI: 10.1016/j.envpol.2022.120610] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 10/18/2022] [Accepted: 11/04/2022] [Indexed: 06/16/2023]
Abstract
Nitrogen use efficiency (NUE, defined as the fraction of N input harvested as product) is an important indicator to understand nitrogen use and losses in croplands as an element of determining sustainable food production. China, as the country with the largest amount of nitrogen fertilizer use globally, research into NUE consistently finds it to be much lower than that in developed countries. Understanding the driving forces of the underlying causes of this low NUE is thus crucial to improve nitrogen use and reduce losses in China. Here we applied the CHANS model to estimate cropland NUE for over 2800 counties in China for the year 2017. Results showed that in most counties NUE ranged between 20% and 40%, while an NUE >50% was mainly found in Northeastern China, likely as a result of large-scale, modern agriculture operations. The source of N input and crop types significantly affected NUE in our assessment. Nitrogen deposition, straw recycling, and biological nitrogen fixation (BNF) could improve NUE, while chemical nitrogen fertilizer and manure inputs reduce NUE. Grain crops have a much higher NUE compared to vegetables, which are often over-fertilized. Moreover, NUE in Southern China is strongly influenced by natural factors such as temperature and precipitation. Specifically, NUE in the Yangtze River Delta (eastern coastal region of China) is associated with socio-economic factors including GDP and the degree of urbanization, while in North-central China, NUE is mainly determined by nitrogen input sources. These examples illustrate that approaches aiming at improving NUE need to be location-specific with consideration of multiple natural and socioeconomic factors.
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Affiliation(s)
- Binhui Chen
- College of Environmental & Resource Sciences, Zhejiang University, Hangzhou, 310058, China; Policy Simulation Laboratory, Zhejiang University, Hangzhou, 310058, China
| | - Chenchen Ren
- Policy Simulation Laboratory, Zhejiang University, Hangzhou, 310058, China; Department of Land Management, Zhejiang University, Hangzhou, 310058, China
| | - Chen Wang
- College of Environmental & Resource Sciences, Zhejiang University, Hangzhou, 310058, China; Policy Simulation Laboratory, Zhejiang University, Hangzhou, 310058, China
| | - Jiakun Duan
- College of Environmental & Resource Sciences, Zhejiang University, Hangzhou, 310058, China; Department of Land Management, Zhejiang University, Hangzhou, 310058, China
| | - Stefan Reis
- UK Centre for Ecology & Hydrology, Penicuik, EH26 0QB, United Kingdom; University of Exeter Medical School, Knowledge Spa, Truro, TR1 3HD, United Kingdom; The University of Edinburgh, School of Chemistry, Edinburgh, EH9 3BF, United Kingdom
| | - Baojing Gu
- College of Environmental & Resource Sciences, Zhejiang University, Hangzhou, 310058, China; Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou, 310058, China.
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Li M, Yuan C, Zhang X, Pang W, Zhang P, Xie R, Lian C, Zhang T. The Transcriptional Responses of Ectomycorrhizal Fungus, Cenococcum geophilum, to Drought Stress. J Fungi (Basel) 2022; 9:jof9010015. [PMID: 36675836 PMCID: PMC9864566 DOI: 10.3390/jof9010015] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 12/14/2022] [Accepted: 12/19/2022] [Indexed: 12/24/2022] Open
Abstract
With global warming, drought has become one of the major environmental pressures that threaten the development of global agricultural and forestry production. Cenococcum geophilum (C. geophilum) is one of the most common ectomycorrhizal fungi in nature, which can form mycorrhiza with a large variety of host trees of more than 200 tree species from 40 genera of both angiosperms and gymnosperms. In this study, six C. geophilum strains with different drought tolerance were selected to analyze their molecular responses to drought stress with treatment of 10% polyethylene glycol. Our results showed that drought-sensitive strains absorbed Na and K ions to regulate osmotic pressure and up-regulated peroxisome pathway genes to promote the activity of antioxidant enzymes to alleviate drought stress. However, drought-tolerant strains responded to drought stress by up-regulating the functional genes involved in the ubiquinone and other terpenoid-quinone biosynthesis and sphingolipid metabolism pathways. The results provided a foundation for studying the mechanism of C. geophilum response to drought stress.
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Affiliation(s)
- Mingtao Li
- International Joint Laboratory of Forest Symbiology, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Chao Yuan
- International Joint Laboratory of Forest Symbiology, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Xiaohui Zhang
- International Joint Laboratory of Forest Symbiology, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Wenbo Pang
- International Joint Laboratory of Forest Symbiology, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Panpan Zhang
- International Joint Laboratory of Forest Symbiology, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Rongzhang Xie
- Forestry Bureau, Sanyuan District, Sanming 365000, China
| | - Chunlan Lian
- Asian Research Center for Bioresource and Environmental Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Midori-cho, Nishitokyo, Tokyo 188-0002, Japan
- Correspondence: (C.L.); (T.Z.); Tel.: +86-80-7456-1286 (C.L.); +86-180-0691-1945 (T.Z.)
| | - Taoxiang Zhang
- International Joint Laboratory of Forest Symbiology, College of Forestry, Fujian Agriculture and Forestry University, Fuzhou 350002, China
- Correspondence: (C.L.); (T.Z.); Tel.: +86-80-7456-1286 (C.L.); +86-180-0691-1945 (T.Z.)
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Sun P, Chen Y, Liu J, Xu Y, Zhou L, Wu Y. Periphytic biofilms function as a double-edged sword influencing nitrogen cycling in paddy fields. Environ Microbiol 2022; 24:6279-6289. [PMID: 36335557 DOI: 10.1111/1462-2920.16277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 11/01/2022] [Indexed: 11/07/2022]
Abstract
It remains unclear whether periphytic biofilms are beneficial to N cycling in paddy fields. Here, based on a national-scale field investigation covering 220 rice fields in China, the N accumulation potential of periphytic biofilms was found to decrease from 8.8 ± 2.4 to 4.5 ± 0.7 g/kg and 3.1 ± 0.6 g/kg with increasing habitat latitude and longitude, respectively. The difference in abundant and rare subcommunities likely accounts for their geo-difference in N accumulation potential. The N cycling pathways involved in periphytic biofilms inferred that soil N and N2 were two potential sources for N accumulation in periphytic biofilms. Meanwhile, some of the accumulated N may be lost via N2 , N2 O, NO, or NH3 outputs. Superficially, periphytic biofilms are double-edged swords to N cycling by increasing soil N through biological N fixation but accelerating greenhouse gas emissions. Essentially, augmented periphytic biofilms increased change of TN (ΔTN) content in paddy soil from -231.9 to 31.9 mg/kg, indicating that periphytic biofilms overall benefit N content enhancement in paddy fields. This study highlights the contribution of periphytic biofilms to N cycling in rice fields, thus, drawing attention to their effect on rice production and environmental security.
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Affiliation(s)
- Pengfei Sun
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China.,Zigui Three Gorges Reservoir Ecosystem, Observation and Research Station of Ministry of Water Resource of the Peoples' Republic of China, Shuitianba, Zigui, Yichang, China
| | - Yin Chen
- School of Life Sciences, University of Warwick, Coventry, UK
| | - Junzhuo Liu
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China.,Zigui Three Gorges Reservoir Ecosystem, Observation and Research Station of Ministry of Water Resource of the Peoples' Republic of China, Shuitianba, Zigui, Yichang, China
| | - Ying Xu
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China.,Zigui Three Gorges Reservoir Ecosystem, Observation and Research Station of Ministry of Water Resource of the Peoples' Republic of China, Shuitianba, Zigui, Yichang, China
| | - Lei Zhou
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China.,Zigui Three Gorges Reservoir Ecosystem, Observation and Research Station of Ministry of Water Resource of the Peoples' Republic of China, Shuitianba, Zigui, Yichang, China
| | - Yonghong Wu
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China.,Zigui Three Gorges Reservoir Ecosystem, Observation and Research Station of Ministry of Water Resource of the Peoples' Republic of China, Shuitianba, Zigui, Yichang, China
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Magnone D, Niasar VJ, Bouwman AF, Beusen AHW, van der Zee SEATM, Sattari SZ. The impact of phosphorus on projected Sub-Saharan Africa food security futures. Nat Commun 2022; 13:6471. [PMID: 36309491 PMCID: PMC9617890 DOI: 10.1038/s41467-022-33900-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 10/07/2022] [Indexed: 12/25/2022] Open
Abstract
Sub-Saharan Africa must urgently improve food security. Phosphorus availability is one of the major barriers to this due to low historical agricultural use. Shared socioeconomic pathways (SSPs) indicate that only a sustainable (SSP1) or a fossil fuelled future (SSP5) can improve food security (in terms of price, availability, and risk of hunger) whilst nationalistic (SSP3) and unequal (SSP4) pathways worsen food security. Furthermore, sustainable SSP1 requires limited cropland expansion and low phosphorus use whilst the nationalistic SSP3 is as environmentally damaging as the fossil fuelled pathway. The middle of the road future (SSP2) maintains today's inadequate food security levels only by using approximately 440 million tonnes of phosphate rock. Whilst this is within the current global reserve estimates the market price alone for a commonly used fertiliser (DAP) would cost US$ 130 ± 25 billion for agriculture over the period 2020 to 2050 and the farmgate price could be two to five times higher due to additional costs (e.g. transport, taxation etc.). Thus, to improve food security, economic growth within a sustainability context (SSP1) and the avoidance of nationalist ideology (SSP3) should be prioritised.
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Affiliation(s)
- Daniel Magnone
- grid.36511.300000 0004 0420 4262University of Lincoln, Lincoln, UK
| | - Vahid J. Niasar
- grid.5379.80000000121662407University of Manchester, Manchester, UK
| | - Alexander F. Bouwman
- grid.5477.10000000120346234Utrecht University, Utrecht, Netherlands ,grid.437426.00000 0001 0616 8355PBL Netherlands Environmental Assessment Agency, The Hague, Netherlands
| | - Arthur H. W. Beusen
- grid.5477.10000000120346234Utrecht University, Utrecht, Netherlands ,grid.437426.00000 0001 0616 8355PBL Netherlands Environmental Assessment Agency, The Hague, Netherlands
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Ntinyari W, Gweyi-Onyango J, Giweta M, Mutegi J, Mochoge B, Nziguheba G, Masso C. Nitrogen budgets and nitrogen use efficiency as agricultural performance indicators in Lake Victoria basin. FRONTIERS IN SUSTAINABLE FOOD SYSTEMS 2022. [DOI: 10.3389/fsufs.2022.1023579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Too little nitrogen (N) is a threat to crop productivity and soil fertility in sub-Saharan Africa (SSA). Nitrogen budgets (NB) and nitrogen use efficiency (NUE) are critical tools for assessing N dynamics in agriculture and have received little or no attention in the region. Data were collected from smallholder farmers clustered into two categories, farmers applying and farmers not applying N fertilizers. NB were calculated using the Coupled Human and Natural Systems (CHANS) model approach for field and farm spatial scales. The results showed spatial variabilities in NB and NUE at the field level (maize and rice) across all the catchments. At the field level, N balances were negative for the two crops in all the catchments. Similarly, at the farm gate, a deficit of −78.37 kg N ha−1 was observed, an indicator of soil N mining. NUE values at the field scale varied across the catchments for both crops, with values for maize grown without N ranging from 25.76 to 140.18%. Even with the application of mineral N at higher levels in rice fields compared to maize fields, NUE values ranged between 81.92 and 224.6%. Our study revealed that the Lake Victoria region suffers from inefficient N cycling due to depleted soil N pools and low synchrony between N input and N removal. Therefore, a challenge lies in exploiting more sustainable N sources for farmers in the region for sustainable farming systems. The NB and NUE provide critical information to agriculture stakeholders to develop environmental, agronomic, and economically viable N management solutions.
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Global trends of cropland phosphorus use and sustainability challenges. Nature 2022; 611:81-87. [PMID: 36224391 DOI: 10.1038/s41586-022-05220-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Accepted: 08/10/2022] [Indexed: 11/09/2022]
Abstract
To meet the growing food demand while addressing the multiple challenges of exacerbating phosphorus (P) pollution and depleting P rock reserves1-15, P use efficiency (PUE, the ratio of productive P output to P input in a defined system) in crop production needs to be improved. Although many efforts have been devoted to improving nutrient management practices on farms, few studies have examined the historical trajectories of PUE and their socioeconomic and agronomic drivers on a national scale1,2,6,7,11,16,17. Here we present a database of the P budget (the input and output of the crop production system) and PUE by country and by crop type for 1961-2019, and examine the substantial contribution of several drivers for PUE, such as economic development stages and crop portfolios. To address the P management challenges, we found that global PUE in crop production must increase to 68-81%, and recent trends indicate some meaningful progress towards this goal. However, P management challenges and opportunities in croplands vary widely among countries.
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Wang L, Wang M, Li Q, Zhang J, Li C, Yuan Y, Tan P, Liu H. Dynamics of soil properties and bacterial community structure by mulched fertigation system in semi-arid area of Northeast China. PeerJ 2022; 10:e14044. [PMID: 36168430 PMCID: PMC9509672 DOI: 10.7717/peerj.14044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 08/21/2022] [Indexed: 01/19/2023] Open
Abstract
The agricultural irrigation and fertigation systems have a non-negligible impact on the soil microenvironment in arid and semi-arid areas. Therefore, studying the processes and changes of soil microenvironment under different plastic mulch drip irrigation systems can reveal the "soil-microbe" mechanism and provide a theoretical support for the optimal irrigation and nutrition management of maize in the semi-arid area of Northeast China. Three treatments were used for this study in the semi-arid area of northeast China, namely; mulched fertigation system (MF), drip irrigation system (DI), and farmers' practices system (FP). We used high-throughput sequencing to study the soil bacterial community structure targeting the 16S rRNA gene. The agricultural irrigation and fertigation systems significantly affected soil properties. MF significantly increased bacterial abundance and bacterial diversity and richness. Moreover, MF and DI markedly increased some relative abundance of beneficial bacterial. The bacterial network in MF was more conducive to the health and stability of the agroecosystem and the relationships among species in MF bacterial network were more complex. The agricultural irrigation and fertigation systems had indirect effects on community composition and bacterial diversity through soil organic carbon (SOC), ammonium nitrogen ( NH 4 + -N), nitrate nitrogen ( NO 3 - -N), pH, moisture, NH 4 + -N and NO 3 - -N had indirect effects on yield through bacterial community composition, bacterial diversity and bacterial abundance. These findings suggested that MF was the most effective treatment to improve soil bacterial abundance and diversity, and stabilize the functional quality of soil biological processes.
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Affiliation(s)
- Ling Wang
- Key Laboratory of Soil Resource Sustainable Utilization for Commodity Grain Bases of Jilin Province, College of Resource and Environmental Science, Jilin Agricultural University, Changchun, Jilin, China
| | - Meng Wang
- Institute of Agricultural Environment and Resources Research, Jilin Academy of Agricultural Sciences, Changchun, China
| | - Qian Li
- Institute of Agricultural Environment and Resources Research, Jilin Academy of Agricultural Sciences, Changchun, China
| | - Jinjing Zhang
- Key Laboratory of Soil Resource Sustainable Utilization for Commodity Grain Bases of Jilin Province, College of Resource and Environmental Science, Jilin Agricultural University, Changchun, Jilin, China
| | - Cuilan Li
- Key Laboratory of Soil Resource Sustainable Utilization for Commodity Grain Bases of Jilin Province, College of Resource and Environmental Science, Jilin Agricultural University, Changchun, Jilin, China
| | - Yuhan Yuan
- Key Laboratory of Soil Resource Sustainable Utilization for Commodity Grain Bases of Jilin Province, College of Resource and Environmental Science, Jilin Agricultural University, Changchun, Jilin, China
| | - Pan Tan
- Key Laboratory of Soil Resource Sustainable Utilization for Commodity Grain Bases of Jilin Province, College of Resource and Environmental Science, Jilin Agricultural University, Changchun, Jilin, China
| | - Hang Liu
- Key Laboratory of Soil Resource Sustainable Utilization for Commodity Grain Bases of Jilin Province, College of Resource and Environmental Science, Jilin Agricultural University, Changchun, Jilin, China
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Wang JM, Liu Q, Hou Y, Qin W, Bai ZH, Zhang FS, Oenema O. Impacts of international food and feed trade on nitrogen balances and nitrogen use efficiencies of food systems. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 838:156151. [PMID: 35623513 DOI: 10.1016/j.scitotenv.2022.156151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 04/29/2022] [Accepted: 05/18/2022] [Indexed: 06/15/2023]
Abstract
International trade of agricultural products has greatly increased over time, but its impacts on sustainable development are debated. It may contribute to food security in importing countries, increases the dependency between countries, and has been implicated in displacement of environmental pollution and resource depletion. There is also discussion about the relationships between trade and nitrogen (N) balances and N use efficiencies (NUE). We explored relationships between changes in the trade of food and feed and in N balances and NUE of the food supply systems through simulation modeling and an analysis of empirical data of 115 countries (representing 91% of global population) for the period 1961-2011. In the empirical analysis, 64 main importing countries and 14 main exporting countries, were distinguished. Importing countries had on average a higher population density than exporting countries but rather similar protein intake and GDP per capita. The empirical analysis indicate that main importing countries had on average higher N fertilizer inputs to their food supply systems, and also higher N surpluses and higher NUE than main exporting countries. The overall mean NUE of the food supply system of main importing countries decreased with increasing import, but the relationships between import and NUE were diverse when these countries were grouped according to population density and GDP per capita. We compared N balances and partial N balances, and three methodologies commonly used for estimating NUE. We observed that NUE2 provides an unbiased estimate for both importing and exporting countries. Our study contributes to the understanding of the diverse relationships between international trade, N balances and NUE of food systems.
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Affiliation(s)
- J M Wang
- Department of Soil Quality, Wageningen University and Research Centre, P.O. Box 47, 6700 AA Wageningen, the Netherlands.
| | - Q Liu
- Department of Soil Quality, Wageningen University and Research Centre, P.O. Box 47, 6700 AA Wageningen, the Netherlands
| | - Y Hou
- Key Laboratory of Plant-Soil Interactions, MOE, College of Resources and Environmental Sciences, China Agricultural University, Yuanmingyuan West Rd. 2, Beijing 100193, China
| | - W Qin
- Key Laboratory of Plant-Soil Interactions, MOE, College of Resources and Environmental Sciences, China Agricultural University, Yuanmingyuan West Rd. 2, Beijing 100193, China
| | - Z H Bai
- Key Laboratory of Agricultural Water Resources, Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, 286 Huaizhong Road, Shijiazhuang 050021, China
| | - F S Zhang
- Key Laboratory of Plant-Soil Interactions, MOE, College of Resources and Environmental Sciences, China Agricultural University, Yuanmingyuan West Rd. 2, Beijing 100193, China
| | - O Oenema
- Department of Soil Quality, Wageningen University and Research Centre, P.O. Box 47, 6700 AA Wageningen, the Netherlands; Key Laboratory of Plant-Soil Interactions, MOE, College of Resources and Environmental Sciences, China Agricultural University, Yuanmingyuan West Rd. 2, Beijing 100193, China; Wageningen Environmental Research, Wageningen University and Research, P.O. Box 47, 6700 AA Wageningen, the Netherlands
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Metabarcoding and Metabolome Analyses Reveal Mechanisms of Leymus chinensis Growth Promotion by Fairy Ring of Leucocalocybe mongolica. J Fungi (Basel) 2022; 8:jof8090944. [PMID: 36135669 PMCID: PMC9505569 DOI: 10.3390/jof8090944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 09/03/2022] [Accepted: 09/06/2022] [Indexed: 11/17/2022] Open
Abstract
Fairy rings are a unique ecological phenomenon caused by the growth of the fungal mycelium in the soil. Fairy rings formed by Leucocalocybe mongolica (LM) are generally distributed in the Mongolian Plateau, where they promote plant growth without fertilization and alleviate fertilizer use. We previously investigated the soil factors regulating growth promotion in a fairy ring ecosystem; however, the aspects of the plant (Leymus chinensis, LC) that promote growth have not been explored. Therefore, the present study investigated the endophyte diversity and metabolome of LC in an LM fairy ring ecosystem. We analyzed the leaf and root samples of LC from the DARK (FR) and OUT (CK) zones. The fairy rings significantly improved the fungal diversity of roots and leaves and the bacterial diversity of leaves in the FR zone. Ralstonia was the dominant bacteria detected in the LC leaves. In addition, Marasmius, another fairy ring fungal genus, was also detected with a high abundance in the roots of the FR zone. Furthermore, widely targeted metabolome analysis combined with KEGG annotation identified 1011 novel metabolites from the leaves and roots of LC and seven pathways significantly regulated by the fairy ring in the FR zone. The fairy ring ecosystem significantly downregulated the flavonoid metabolism in the leaves and roots of LC. The correlation analysis found Ralstonia is a potential regulatory factor of flavonoid biosynthesis in LC. In addition, salicylic acid and jasmonic acid were found upregulated in the leaves, probably related to Marasmius enrichment. Thus, the study details plant factors associated with enhanced growth in an LM fairy ring ecosystem. These findings lay a theoretical foundation for developing the fairy ring ecosystem in an agricultural system.
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Ludemann CI, Gruere A, Heffer P, Dobermann A. Global data on fertilizer use by crop and by country. Sci Data 2022; 9:501. [PMID: 35978058 PMCID: PMC9385665 DOI: 10.1038/s41597-022-01592-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Accepted: 07/25/2022] [Indexed: 11/24/2022] Open
Abstract
Understanding how much inorganic fertilizer (referred to as fertilizer) is applied to different crops at national, regional and global levels is an essential component of fertilizer consumption analysis and demand projection. Good information on fertilizer use by crop (FUBC) is rarely available because it is difficult to collect and time-consuming to process and validate. To fill this gap, a first global FUBC report was published in 1992 for the 1990/1991 period, based on an expert survey conducted jointly by the Food and Agriculture Organization (FAO) of the UN, the International Fertilizer Development Center (IFDC) and the International Fertilizer Association (IFA). Since then, similar expert surveys have been carried out and published every two to four years in the main fertilizer-consuming countries. Since 2008 IFA has led these efforts and, to our knowledge, remains the only globally available data set on FUBC. This dataset includes data (in CSV format) from a survey carried out by IFA to represent the 2017–18 period as well as a collation of all historic FUBC data. Measurement(s) | Fertilizer use by crop and country for nitrogen, phosphorus and potassium. | Technology Type(s) | Survey | Factor Type(s) | Crop and country | Sample Characteristic - Organism | Plantae | Sample Characteristic - Environment | World | Sample Characteristic - Location | World |
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Affiliation(s)
- Cameron I Ludemann
- Wageningen University & Research, Plant Production Systems, Wageningen, Netherlands.
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Zheng H, Peng J, Qiu S, Xu Z, Zhou F, Xia P, Adalibieke W. Distinguishing the impacts of land use change in intensity and type on ecosystem services trade-offs. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 316:115206. [PMID: 35597216 DOI: 10.1016/j.jenvman.2022.115206] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 03/24/2022] [Accepted: 04/28/2022] [Indexed: 06/15/2023]
Abstract
Changes in land use intensity and types can affect the structure and function of ecosystems, and thus ecosystem services (ESs) as well as their interactions. However, the impacts of changes in land use intensity on ESs remain poorly understood. Through four different land use scenarios, we distinguished the independent contribution of changes in agricultural land use intensity and types to grain production (GP), water purification (WP), and their trade-offs in the Dongting Lake Basin. The results showed that from 1990 to 2015, GP increased across 58.07% of the total area, but WP decreased across 64.81% of the study area. The two ESs simultaneously increased or decreased across 41.93% of the total area. Watersheds covering 48.72% of the study area where GP increased and WP decreased were mainly distributed in areas with increased land use intensity. The other regions where GP decreased and WP increased were mainly distributed in areas with decreased land use intensity. The scenario analysis of GP, WP, and their trade-offs showed that the areas where agricultural land use intensity was the dominant factor were as large as 1.95 times, 2.38 times, and 2.43 times those dominated by land use type respectively, under the same climate conditions. This study highlighted the importance of changes in agricultural land use intensity on ES, which provided further supporting to ES-based land use management.
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Affiliation(s)
- Huining Zheng
- Laboratory for Earth Surface Processes, Ministry of Education, College of Urban and Environmental Sciences, Peking University, Beijing, 100871, China
| | - Jian Peng
- Laboratory for Earth Surface Processes, Ministry of Education, College of Urban and Environmental Sciences, Peking University, Beijing, 100871, China.
| | - Sijing Qiu
- Laboratory for Earth Surface Processes, Ministry of Education, College of Urban and Environmental Sciences, Peking University, Beijing, 100871, China
| | - Zihan Xu
- Laboratory for Earth Surface Processes, Ministry of Education, College of Urban and Environmental Sciences, Peking University, Beijing, 100871, China
| | - Feng Zhou
- Laboratory for Earth Surface Processes, Ministry of Education, College of Urban and Environmental Sciences, Peking University, Beijing, 100871, China; Sino-France Institute of Earth Systems Science, Peking University, Beijing, 100871, China
| | - Pei Xia
- Laboratory for Earth Surface Processes, Ministry of Education, College of Urban and Environmental Sciences, Peking University, Beijing, 100871, China
| | - Wulahati Adalibieke
- Laboratory for Earth Surface Processes, Ministry of Education, College of Urban and Environmental Sciences, Peking University, Beijing, 100871, China; Sino-France Institute of Earth Systems Science, Peking University, Beijing, 100871, China
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Reay MK, Pears KA, Kuhl A, Evershed RP, Murray PJ, Cardenas LM, Dungait JAJ, Bull ID. Mechanisms of nitrogen transfer in a model clover-ryegrass pasture: a 15N-tracer approach. PLANT AND SOIL 2022; 480:369-389. [PMID: 36466744 PMCID: PMC9705487 DOI: 10.1007/s11104-022-05585-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 06/25/2022] [Indexed: 06/17/2023]
Abstract
PURPOSE Nitrogen (N) transfer from white clover (Trifolium repens cv.) to ryegrass (Lolium perenne cv.) has the potential to meet ryegrass N requirements. This study aimed to quantify N transfer in a mixed pasture and investigate the influence of the microbial community and land management on N transfer. METHODS Split root 15N-labelling of clover quantified N transfer to ryegrass via exudation, microbial assimilation, decomposition, defoliation and soil biota. Incorporation into the microbial protein pool was determined using compound-specific 15N-stable isotope probing approaches. RESULTS N transfer to ryegrass and soil microbial protein in the model system was relatively small, with one-third arising from root exudation. N transfer to ryegrass increased with no microbial competition but soil microbes also increased N transfer via shoot decomposition. Addition of mycorrhizal fungi did not alter N transfer, due to the source-sink nature of this pathway, whilst weevil grazing on roots decreased microbial N transfer. N transfer was bidirectional, and comparable on a short-term scale. CONCLUSIONS N transfer was low in a model young pasture established from soil from a permanent grassland with long-term N fertilisation. Root exudation and decomposition were major N transfer pathways. N transfer was influenced by soil biota (weevils, mycorrhizae) and land management (e.g. grazing). Previous land management and the role of the microbial community in N transfer must be considered when determining the potential for N transfer to ryegrass. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s11104-022-05585-0.
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Affiliation(s)
- Michaela K. Reay
- Organic Geochemistry Unit, School of Chemistry, University of Bristol, Cantock’s Close, Bristol, BS8 1TS UK
| | - Katrina A. Pears
- Organic Geochemistry Unit, School of Chemistry, University of Bristol, Cantock’s Close, Bristol, BS8 1TS UK
| | - Alison Kuhl
- Organic Geochemistry Unit, School of Chemistry, University of Bristol, Cantock’s Close, Bristol, BS8 1TS UK
| | - Richard P. Evershed
- Organic Geochemistry Unit, School of Chemistry, University of Bristol, Cantock’s Close, Bristol, BS8 1TS UK
| | - Phillip J. Murray
- Department of Sustainable Agriculture Sciences, Rothamsted Research - North Wyke, Okehampton, EX20 2SB Devon UK
- Present Address: School of Agriculture, Food and Environment, Royal Agricultural University, Cirencester, GL7 6JS UK
| | - Laura M. Cardenas
- Department of Sustainable Agriculture Sciences, Rothamsted Research - North Wyke, Okehampton, EX20 2SB Devon UK
| | - Jennifer A. J. Dungait
- Department of Sustainable Agriculture Sciences, Rothamsted Research - North Wyke, Okehampton, EX20 2SB Devon UK
- Present Address: Carbon Management Center, SRUC - Scotland’s Rural College, Edinburgh, Scotland EH9 3JG UK
- Present Address: Geography, CLES - Amory Building, University of Exeter, Exeter, EX4 4RJ UK
| | - Ian D. Bull
- Organic Geochemistry Unit, School of Chemistry, University of Bristol, Cantock’s Close, Bristol, BS8 1TS UK
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Land Fragmentation, Technology Adoption and Chemical Fertilizer Application: Evidence from China. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19138147. [PMID: 35805805 PMCID: PMC9265982 DOI: 10.3390/ijerph19138147] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 06/29/2022] [Accepted: 06/30/2022] [Indexed: 12/10/2022]
Abstract
Although it has been widely recognized that land fragmentation has increased chemical fertilizer application, little is known about the role of technology adoption in mitigating these adverse effects. To empirically examine the relationship between land fragmentation, technology adoption and chemical fertilizer application, we developed a mediation model. We applied our analysis to a survey data set encompassing 1388 farm-level samples collected in 14 Chinese provinces in 2019. Our study demonstrated that land fragmentation can not only directly increase chemical fertilizer application but also indirectly increase it by hindering the adoption of agricultural mechanization technologies (AMT’s) and soil testing fertilization technologies (STFT’s). Both are recognized as potent drivers of fertilizer use reductions. Moreover, the adoption of information and communications technologies (ICT’s) can help mitigate the negative effects of land fragmentation on technology adoption, thus reducing chemical fertilizer application intensity (CFAI). However, the direct effects of land fragmentation on CAFI was unaffected by ICT’s. Our findings suggest that ICT’s have revolutionized farmer recognition, promotion and adoption of agricultural technologies by increasing awareness and diffusion of agricultural technology information.
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Ladha JK, Peoples MB, Reddy PM, Biswas JC, Bennett A, Jat ML, Krupnik TJ. Biological nitrogen fixation and prospects for ecological intensification in cereal-based cropping systems. FIELD CROPS RESEARCH 2022; 283:108541. [PMID: 35782167 PMCID: PMC9133800 DOI: 10.1016/j.fcr.2022.108541] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Revised: 03/29/2022] [Accepted: 04/03/2022] [Indexed: 05/02/2023]
Abstract
The demand for nitrogen (N) for crop production increased rapidly from the middle of the twentieth century and is predicted to at least double by 2050 to satisfy the on-going improvements in productivity of major food crops such as wheat, rice and maize that underpin the staple diet of most of the world's population. The increased demand will need to be fulfilled by the two main sources of N supply - biological nitrogen (gas) (N2) fixation (BNF) and fertilizer N supplied through the Haber-Bosch processes. BNF provides many functional benefits for agroecosystems. It is a vital mechanism for replenishing the reservoirs of soil organic N and improving the availability of soil N to support crop growth while also assisting in efforts to lower negative environmental externalities than fertilizer N. In cereal-based cropping systems, legumes in symbiosis with rhizobia contribute the largest BNF input; however, diazotrophs involved in non-symbiotic associations with plants or present as free-living N2-fixers are ubiquitous and also provide an additional source of fixed N. This review presents the current knowledge of BNF by free-living, non-symbiotic and symbiotic diazotrophs in the global N cycle, examines global and regional estimates of contributions of BNF, and discusses possible strategies to enhance BNF for the prospective benefit of cereal N nutrition. We conclude by considering the challenges of introducing in planta BNF into cereals and reflect on the potential for BNF in both conventional and alternative crop management systems to encourage the ecological intensification of cereal and legume production.
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Affiliation(s)
- Jagdish K. Ladha
- Department of Plant Sciences, University of California, Davis, CA, USA
| | - Mark B. Peoples
- Commonwealth Scientific and Industrial Research Organisation, Canberra, Australia
| | | | | | - Alan Bennett
- Department of Plant Sciences, University of California, Davis, CA, USA
| | - Mangi L. Jat
- International Maize and Wheat Improvement Center, New Delhi, India
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48
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Substantial Organic and Particulate Nitrogen and Phosphorus Export from Geomorphologically Stable African Tropical Forest Landscapes. Ecosystems 2022. [DOI: 10.1007/s10021-022-00773-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Soil Chemical Properties, Metabolome, and Metabarcoding Give the New Insights into the Soil Transforming Process of Fairy Ring Fungi Leucocalocybe mongolica. J Fungi (Basel) 2022; 8:jof8070680. [PMID: 35887438 PMCID: PMC9324422 DOI: 10.3390/jof8070680] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 06/08/2022] [Accepted: 06/27/2022] [Indexed: 12/04/2022] Open
Abstract
A unique ecological landscape distributed in the Mongolian Plateau, called fairy rings, caused by the growth of the fungus Leucocalocybe mongolica (LM) in the soil could promote plant growth without fertilization. Therefore, this landscape can alleviate fertilizer use and has excellent value for agricultural production. The previous studies only investigated several parameters of the fairy rings, such as soil microbial diversity and some soil chemical properties, thus conclusions based on the studies on fairy rings lack comprehension. Therefore, the present study systematically investigated the chemical properties, metabolome, and metabarcoding of LM-transformed soil. We analyzed fairy ring soils from DARK (FR) and OUT (CK) zone correlated growth promotion with ten soil chemical properties, including N, nitrate-N, inorganic-P, cellulose, available boron, available sulfur, Fe, Mn, Zn, and Cu, which were identified as important markers to screen fairy ring landscapes. Metabolomics showed that the accumulation of 17 carbohydrate-dominated metabolites was closely associated with plant growth promotion. Finally, metabarcoding detected fungi as the main components affecting soil conversion. Among the various fungi at the family level, Lasiosphaeriaceae, unidentified_Auriculariales_sp, and Herpotrichiellaceae were markers to screen fairy ring. Our study is novel and systematically reveals the fairy ring soil ecology and lists the key factors promoting plant growth. These findings lay a theoretical foundation for developing the fairy ring landscape in an agricultural system.
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van Rijssel SQ, Veen GFC, Koorneef GJ, Bakx-Schotman JMTT, Ten Hooven FC, Geisen S, van der Putten WH. Soil microbial diversity and community composition during conversion from conventional to organic agriculture. Mol Ecol 2022; 31:4017-4030. [PMID: 35726521 PMCID: PMC9545909 DOI: 10.1111/mec.16571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 05/25/2022] [Accepted: 06/06/2022] [Indexed: 11/30/2022]
Abstract
It is generally assumed that the dependence of conventional agriculture on artificial fertilizers and pesticides strongly impacts the environment, while organic agriculture relying more on microbial functioning may mitigate these impacts. However, it is not well known how microbial diversity and community composition change in conventionally managed farmers' fields that are converted to organic management. Here, we sequenced bacterial and fungal communities of 34 organic fields on sand and marine clay soils in a time series (chronosequence) covering 25 years of conversion. Nearby conventional fields were used as references. We found that community composition of bacteria and fungi differed between organic and conventionally managed fields. In the organic fields, fungal diversity increased with time since conversion. However, this effect disappeared when the conventional paired fields were included. There was a relationship between pH and soil organic matter content and the diversity and community composition of bacteria and fungi. In marine clay soils, when time since organic management increased, fungal communities in organic fields became more dissimilar to those in conventional fields. We conclude that conversion to organic management in these Dutch farmers' fields did not increase microbial community diversity. Instead, we observed that in organic fields in marine clay when time since conversion increased soil fungal community composition became progressively dissimilar from that in conventional fields. Our results also showed that the paired sampling approach of organic and conventional fields was essential in order to control for environmental variation that was otherwise unaccounted for.
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Affiliation(s)
- Sophie Q van Rijssel
- Department of Terrestrial Ecology; Netherlands Institute for Ecology (NIOO-KNAW), PO box 50, 6700, AB, Wageningen, The Netherlands
| | - G F Ciska Veen
- Department of Terrestrial Ecology; Netherlands Institute for Ecology (NIOO-KNAW), PO box 50, 6700, AB, Wageningen, The Netherlands
| | - Guusje J Koorneef
- Department of Soil Chemistry and Chemical Soil Quality; Wageningen University & Research, AA, Wageningen, The Netherlands
| | - J M T Tanja Bakx-Schotman
- Department of Terrestrial Ecology; Netherlands Institute for Ecology (NIOO-KNAW), PO box 50, 6700, AB, Wageningen, The Netherlands
| | - Freddy C Ten Hooven
- Department of Terrestrial Ecology; Netherlands Institute for Ecology (NIOO-KNAW), PO box 50, 6700, AB, Wageningen, The Netherlands
| | - Stefan Geisen
- Department of Terrestrial Ecology; Netherlands Institute for Ecology (NIOO-KNAW), PO box 50, 6700, AB, Wageningen, The Netherlands.,Laboratory of Nematology, Wageningen University, AA, Wageningen, The Netherlands
| | - Wim H van der Putten
- Department of Terrestrial Ecology; Netherlands Institute for Ecology (NIOO-KNAW), PO box 50, 6700, AB, Wageningen, The Netherlands.,Laboratory of Nematology, Wageningen University, AA, Wageningen, The Netherlands
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