Phosphorus, as a nonrenewable resource, plays a crucial role in crop development and productivity. However, the extent to which straw amendments contribute to the dynamics of soil alkaline phosphomonoesterase (ALP)-producing bacterial community and functionality over an extended period remains elusive. Here, we conducted a 7-year long-term field experiment consisting of a no-fertilizer control, a chemical fertilizer treatment, and three straw (straw, straw combined with manure, and straw biochar) treatments. Our results indicated that straw amendments significantly improved the succession patterns of the ALP-producing bacterial diversity. Simultaneously, straw amendments significantly increased the network stability of the ALP-producing bacteria over time, as evidenced by higher network robustness, a higher ratio of negative to positive cohesion, and lower network vulnerability. High dynamic and stability of ALP-producing bacterial community generated high ALP activity which further increased soil Phosphorus (P) availability as well as maize productivity.
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http://dx.doi.org/10.1002/imt2.260 | DOI Listing |
Sci Total Environ
January 2025
Program of Sustainability in Biosystems, Institute of Agrifood Research and Technology (IRTA), Caldes de Montbui, Barcelona, Spain. Electronic address:
Paddy fields are a major anthropogenic source of global methane (CH) emissions, a powerful greenhouse gas (GHG). This study aimed at gaining insights of different organic and inorganic conductive materials (CMs) - biochar, fungal melanin, and magnetite - to mitigate CH emissions, and on their influence on key microbial populations, mimicking the postharvest season throughout the degradation of rice straw in microcosms under anaerobic conditions encompassing postharvest paddy rice soils from the Ebro Delta, Spain. Results showed that fungal melanin was the most effective CM, significantly reducing CH emissions by 29 %, while biochar amendment also reduced emissions by 10 %.
View Article and Find Full Text PDFImeta
December 2024
Institute of Soil Science, Chinese Academy of Sciences Nanjing China.
Phosphorus, as a nonrenewable resource, plays a crucial role in crop development and productivity. However, the extent to which straw amendments contribute to the dynamics of soil alkaline phosphomonoesterase (ALP)-producing bacterial community and functionality over an extended period remains elusive. Here, we conducted a 7-year long-term field experiment consisting of a no-fertilizer control, a chemical fertilizer treatment, and three straw (straw, straw combined with manure, and straw biochar) treatments.
View Article and Find Full Text PDFHuan Jing Ke Xue
January 2025
State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China.
In this investigation, the influence of organic amendment on the structural and functional dynamics of soil microbial communities and its effect on rice productivity were examined. Five fertilization treatments from a 40-year field experiment were selected: no fertilizer (CK), inorganic NPK fertilizer (NPK), inorganic NPK combined with green manure (NG), inorganic NPK combined with green manure and pig manure (NGM), and inorganic NPK combined with green manure and rice straw (NGS). The findings revealed that the organic amendment enhanced the soil organic carbon (SOC), total nitrogen (TN), and total phosphorus (TP) levels, alongside an increase in rice yield; notably, the most significant improvements were observed with the NGM treatment.
View Article and Find Full Text PDFEcotoxicol Environ Saf
December 2024
College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China; Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture and Rural Affairs, Yangling, Shaanxi 712100, China. Electronic address:
Dissolved organic matter (DOM) released by straw returning for decomposition interacts with selenium (Se) in soil, which affects the speciation distribution of Se and its bioavailability. However, the relative mechanisms involved are slightly understood. This study investigated the effects of straw-derived DOM on two levels of exogenous selenite (low-Se and high-Se treatments) in two types of soil with distinct pH.
View Article and Find Full Text PDFFront Plant Sci
December 2024
Guangxi Key Laboratory of Environmental Processes and Remediation in Ecologically Fragile Regions, Ministry of Education, Guangxi Normal University, Guilin, China.
Introduction: Susbtantial agricultural wastes are produced globally which need urgent management policies. To explore the effective utilization of agricultural waste in enhancing soil quality and carbon sequestration capacity, straw and its biochar can be applied as soil ameliorants.
Methods: This study was designed to investigate the impact of different return-to-field methods of rice straw on the transformation between different carbon components in the soil of i fields.
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