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Peng Y, Zhang B, Guan CY, Jiang X, Tan J, Li X. Identifying biotic and abiotic processes of reversing biochar-induced soil phosphorus leaching through biochar modification with MgAl layered (hydr)oxides. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 843:157037. [PMID: 35777556 DOI: 10.1016/j.scitotenv.2022.157037] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 06/24/2022] [Accepted: 06/24/2022] [Indexed: 06/15/2023]
Abstract
Biochar (BC) as a increasing widely adopted soil amendments showed potential threat to soil P leaching, but the relevant mechanisms were not clear enough and relevant strategy should be proposed to address the P leaching induced by BC application. In this study, effects of ordinary corn straw BC, and a fabricated Mg/Al-LDHs modified biochar (LBC) on soil P availability, adsorption, fraction and mobility were compared and investigated by conducting the column and incubation experiments at biochar to soil rate of 1 %, 2 % and 4 % (w/w). Chemical sequential extraction methods and various solid-state method (i.e., three-dimensional excitation emission matrix (EEM), x-ray diffraction (XRD), scanning electron micrograph (SEM) and P K-edge X-ray absorption near edge structure (XANES)) were utilized to give deep insights into the P mobilization and immobilization mechanisms by respectively applying the BC and LBC. Results of incubation experiments showed that applying the LBC reduced the labile P with significant CaP transformation to Al-retained P, while ordinary BC promoted the Fe/Al-P transformation to labile dibasic calcium phosphate and monobasic calcium phosphate evidenced by the EEM analysis, in-situ XANES investigation and chemical sequential extraction methods. Results of phosphatase and microbial analyses indicated that the decreased labile P after 30 days' incubation and the mitigated P leaching in LBC treatment were dominantly ascribed to abiotic processes of inorganic P transformation and (de)sorption. This research gave deep insights into abiotic and biotic processes of ordinary biochar promoting soil P leaching, and important implications for applying engineered biochar in reducing P leaching and improving soil productivity.
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Affiliation(s)
- Yutao Peng
- School of Agriculture, Sun Yat-sen University, Shenzhen, Guangdong 518107, China; Modern Agricultural Innovation Center, Henan Institute of Sun Yat-sen University, China.
| | - Baige Zhang
- Vegetable Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China
| | - Chung-Yu Guan
- Department of Environmental Engineering, National Ilan University, Yilan 260, Taiwan
| | - Xiaoqian Jiang
- School of Agriculture, Sun Yat-sen University, Shenzhen, Guangdong 518107, China; Modern Agricultural Innovation Center, Henan Institute of Sun Yat-sen University, China
| | - Jinfang Tan
- School of Agriculture, Sun Yat-sen University, Shenzhen, Guangdong 518107, China; Modern Agricultural Innovation Center, Henan Institute of Sun Yat-sen University, China
| | - Xiaoyun Li
- School of Agriculture, Sun Yat-sen University, Shenzhen, Guangdong 518107, China; Modern Agricultural Innovation Center, Henan Institute of Sun Yat-sen University, China.
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Production of pine sawdust biochar supporting phosphate-solubilizing bacteria as an alternative bioinoculant in Allium cepa L., culture. Sci Rep 2022; 12:12815. [PMID: 35896796 PMCID: PMC9329452 DOI: 10.1038/s41598-022-17106-1] [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: 02/09/2022] [Accepted: 07/20/2022] [Indexed: 11/08/2022] Open
Abstract
We produced and characterised biochar made from Caribbean pine sawdust as raw material. The biochar (BC500) was used as biocompatible support to co-inoculate phosphate solubilizing bacteria (PSB) (BC500/PSB) on Allium cepa L., plants at a greenhouse scale for four months. The three biomaterials study included proximate analysis, elemental analysis, aromaticity analysis, scanning electron microscopy, Fourier transform infrared spectroscopy (FTIR), adsorption studies at different pH and PSB stability as a function of time. The results indicated that BC500 is suitable as organic support or solid matrix to maintain the viability of PSB able to solubilise P from phosphate rock (PR). The biofertilizer (BC500/PSB) allows increasing germination, seedling growth, nutrient assimilation, and growth of Allium cepa L., because PSB immobilised on BC500 promoted nutrient mobilisation, particularly P, during cultivation of Allium cepa L., at pots scale. The two treatments to evaluate the biofertilizer (BC500/PSB) showed the highest concentrations of total P with 1.25 ± 0.13 and 1.38 ± 0.14 mg bulb-1 in A. cepa L. This work presents the benefits of a new product based on bacteria naturally associated with onion and an organic material (BC500) serving as a bacterial carrier that increases the adsorption area of highly reactive nutrients, reducing their leaching or precipitation with other nutrients and fixation to the solid matrix of the soil.
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Lu Y, Silveira ML, O'Connor GA, Vendramini JMB, Erickson JE, Li YC, Cavigelli M. Biochar impacts on nutrient dynamics in a subtropical grassland soil: 1. Nitrogen and phosphorus leaching. JOURNAL OF ENVIRONMENTAL QUALITY 2020; 49:1408-1420. [PMID: 33016442 DOI: 10.1002/jeq2.20139] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 07/10/2020] [Accepted: 07/22/2020] [Indexed: 06/11/2023]
Abstract
Despite the numerous benefits of biosolids, concerns over nutrient losses restrict the extent to which biosolids can be beneficially reused. We evaluated the effectiveness of biochar in controlling the lability of nutrients in agricultural land. This study was designed to investigate the potential impacts of co-applying biochar with biosolids or inorganic fertilizer on N and P leaching losses. A companion paper focuses on greenhouse gas responses. Nutrients were surface applied as biosolids (aerobically digested Class B) and inorganic fertilizer (ammonium nitrate and triple superphosphate) to an established perennial pasture at equivalent annual rates typical of field practices. Biochar was applied at an annual rate of 20 Mg ha-1 . Leachate N and P were monitored using passive-capillary drainage lysimeters. Results demonstrated significant temporal variability in leachate N and P, with larger pulses generally occurring during periods of high water table levels or after intensive rainfall. Inorganic fertilizer generally resulted in greater leachate N and P losses than biosolids. No differences in leachate N and P losses between biosolids and control were observed. Approximately 1% of applied N was lost via leaching from biosolids treatments vs. 16% for inorganic fertilizer. Regardless of the P source, negligible (0.1-0.2% of applied P), cumulative P leaching occurred during the 3-yr study. Biochar had no effect on P leaching but reduced N leaching from treatments receiving inorganic fertilizer by 60%. Prudent nutrient management is possible even on biosolids-amended Spodosols with high water tables.
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Affiliation(s)
- Yanyan Lu
- Range Cattle Research and Education Center, Univ. of Florida, Ona, FL, 33865, USA
| | - Maria Lucia Silveira
- Range Cattle Research and Education Center, Univ. of Florida, Ona, FL, 33865, USA
| | - George A O'Connor
- Soil and Water Sciences Dep., Univ. of Florida, Gainesville, FL, 32611, USA
| | - Joao M B Vendramini
- Range Cattle Research and Education Center, Univ. of Florida, Ona, FL, 33865, USA
| | - John E Erickson
- Agronomy Dep., Univ. of Florida, Gainesville, FL, 32611, USA
| | - Yuncong C Li
- Dep. of Soil and Water Sciences, Tropical Research and Education Center, Univ. of Florida, Homestead, FL, 33031, USA
| | - Michel Cavigelli
- Sustainable Agricultural Systems Lab., Beltsville Agricultural Research Center, USDA-ARS, Beltsville, MD, 20705, USA
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Cui M, Zeng L, Qin W, Feng J. Measures for reducing nitrate leaching in orchards:A review. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 263:114553. [PMID: 32311625 DOI: 10.1016/j.envpol.2020.114553] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 03/30/2020] [Accepted: 04/05/2020] [Indexed: 06/11/2023]
Abstract
Nitrogen (N) is one of the most important nutrients for plant growth. However, improper management of N fertilization in agriculture has led to a large amount of nitrate leaching, which is especially the case in fruit production systems. Studies have shown that high levels of nitrate in drinking water can cause harm to the human body. Excessive nitrate in rivers leads to eutrophication and damage to the ecological environment of the water. This study reviewed the measures and methods for reducing nitrate leaching in orchards. Some approaches for reducing nitrate leaching in orchards were evaluated, such as using grass cover, applying controlled-release N fertilizer, adding nitrification inhibitors, etc. These methods play important roles in reducing nitrate leaching in orchards, but more importantly, integrated measures are required to achieve agricultural sustainability and environmental protection goals.
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Affiliation(s)
- Meng Cui
- College of Information Science and Technology, Hebei Agricultural University, No. 289 Lingyusi Street, Baoding, Hebei, 071001, China
| | - Lihua Zeng
- College of Mechanical and Electrical Engineering, Hebei Agricultural University, No. 289 Lingyusi Street, Baoding, Hebei, 071001, China
| | - Wei Qin
- College of Resources and Environmental Sciences, National Academy of Agricultural Green Development, China Agricultural University, N0. 2 Yuanmingyuan Street, Beijing, China
| | - Juan Feng
- College of Information Science and Technology, Hebei Agricultural University, No. 289 Lingyusi Street, Baoding, Hebei, 071001, China.
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Soil Amendment with Biochar Affects Water Drainage and Nutrient Losses by Leaching: Experimental Evidence under Field-Grown Conditions. AGRONOMY-BASEL 2019. [DOI: 10.3390/agronomy9110758] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Leaching of soluble elements from cultivated soils is a major concern to meet the target of agricultural sustainability in most areas. The effect of biochar application to a cultivated soil on water drainage and the consequent solute losses was assessed during a trial carried out over two consecutive growing seasons. Biochar was added to a loam-texture soil, at 0, 1, and 2% d.w. rates. A lysimeter-like set-up arranged in the experimental field-unit, allowed collecting the percolating water. Two multiple linear regressions (ANCOVA models) were applied to detect biochar effect on: (1) The seasonal amount of drained water; and (2) the concentration of solutes in the drained water. The statistical comparison among a set of slope coefficients as affected by treatments (growing season and biochar) was used as modelling approach. The lower biochar application rate (1%) significantly reduced both the amount of drained water and its concentration in solutes. Conversely, the higher biochar application rate (2%) showed no significant effects. Nitrate and chloride showed a significant interaction with biochar application rates. Higher biochar application increased nitrate leaching while reduced that of chloride. Biochar application within a rate no more than 1% resulted in a useful and quite effective technical operation.
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Abstract
Biochar application is considered to be an emerging strategy to improve soil ecosystem services. However, implications of such application on water quality parameters have not been widely discussed. This paper synthesizes the state-of-the-art research on biochar effects on water erosion, nitrate leaching, and other sources of water pollution. Literature indicates that in general, biochar application reduces runoff by 5 to 50% and soil loss by 11 to 78%, suggesting that it can be effective at reducing water erosion, but the magnitude of erosion reduction is highly variable. Co-application of biochar with other organic amendments (i.e., animal manure, compost) appears to be more effective at reducing water erosion than biochar alone. A main mechanism by which biochar can reduce water erosion is by improving soil properties (i.e., organic C, hydraulic conductivity, aggregate stability), which affect soil erodibility. This review also indicates that biochar reduces nitrate leaching, in most cases by 2 to 88%, but has mixed effect on phosphate and dissolved C leaching. Additionally, biochar effectively filters urban runoff, adsorbs pollutants, and reduces pesticides losses. Biochar feedstock, pyrolysis temperature, application amount, time after application, and co-application with other amendments affect biochar impacts on water quality. Biochar erosion and potential reduction in nutrient and pesticide use efficiency due to the strong adsorption are concerns that deserve consideration. Overall, biochar application has the potential to reduce water erosion, nitrate leaching, pesticide losses, and other pollutant losses, but more field-scale data are needed to better discern the extent to which biochar can improve water quality.
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Nitrogen Related Diffuse Pollution from Horticulture Production—Mitigation Practices and Assessment Strategies. HORTICULTURAE 2017. [DOI: 10.3390/horticulturae3010025] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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