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<p>The issue of pesticide contamination is well-documented and debated in the scientific community. In India, safe disposal of these toxic wastes is rarely practiced, leading to soil and groundwater contamination and entry into the food chain, causing toxic effects in humans.&#xa0;An incubation experiment was conducted to assess pesticide degradation in manure-based biomixtures for potential biobed applications. Various biomixtures using rice straw, vermicompost, soil, and microbial strains were developed and spiked with a blend of twenty pesticides at two doses. The biomixtures were pre-incubated for either 7 or 15 days before spiking. Sampling was performed at regular intervals and analysed using GC-MS/MS and LC-MS/MS to evaluate pesticide degradation and biochemical properties.&#xa0;Pesticide degradation varied based on chemical nature, biomixture type, and preconditioning duration. Longer preconditioning (15 days) with microbial strains led to more rapid degradation compared to shorter preconditioning (7 days) without microbial inoculation. Significant differences were observed in microbial biomass carbon (MBC), dehydrogenase activity (DHA), fluorescein diacetate (FDA) hydrolysis, alkaline phosphatase activity, and glucosidase activity in different set of biomixtures. Emamectin benzoate was found to be dissipated at faster rate (half-life; 7.45–17.50 d) among the compounds present irrespective of substrates, doses and time of pre-incubation. The highest values were found in the biomixture of rice straw, vermicompost, and soil treated with microbial inoculant, pre-incubated for 15 days.&#xa0;The study highlights the effectiveness of biomixtures, microbial inoculants, and pre-conditioning periods for pesticide degradation. Rapid pesticide degradation in biomixtures, especially with microbial strains, has positive environmental implications, reducing pesticide residues in soil, water, and crops. This aligns with sustainable agriculture principles, promoting environmentally friendly pesticide degradation methods and contributing to more sustainable farming practices.</p>

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Effective Biomixture for Preventing Pesticide Point Source of Contamination

  • 期刊论文

  • 发表日期：

    2025年1月2日

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  • Kumari Divya Jyoti,
  • Pritam Ganguly,
  • Arnab Goon,
  • Munna Kumar,
  • Rajat Kumar Roy,
  • Arvind Kumar,
  • Mainak Ghosh,
  • Rajiv Rakshit

摘要

The issue of pesticide contamination is well-documented and debated in the scientific community. In India, safe disposal of these toxic wastes is rarely practiced, leading to soil and groundwater contamination and entry into the food chain, causing toxic effects in humans. An incubation experiment was conducted to assess pesticide degradation in manure-based biomixtures for potential biobed applications. Various biomixtures using rice straw, vermicompost, soil, and microbial strains were developed and spiked with a blend of twenty pesticides at two doses. The biomixtures were pre-incubated for either 7 or 15 days before spiking. Sampling was performed at regular intervals and analysed using GC-MS/MS and LC-MS/MS to evaluate pesticide degradation and biochemical properties. Pesticide degradation varied based on chemical nature, biomixture type, and preconditioning duration. Longer preconditioning (15 days) with microbial strains led to more rapid degradation compared to shorter preconditioning (7 days) without microbial inoculation. Significant differences were observed in microbial biomass carbon (MBC), dehydrogenase activity (DHA), fluorescein diacetate (FDA) hydrolysis, alkaline phosphatase activity, and glucosidase activity in different set of biomixtures. Emamectin benzoate was found to be dissipated at faster rate (half-life; 7.45–17.50 d) among the compounds present irrespective of substrates, doses and time of pre-incubation. The highest values were found in the biomixture of rice straw, vermicompost, and soil treated with microbial inoculant, pre-incubated for 15 days. The study highlights the effectiveness of biomixtures, microbial inoculants, and pre-conditioning periods for pesticide degradation. Rapid pesticide degradation in biomixtures, especially with microbial strains, has positive environmental implications, reducing pesticide residues in soil, water, and crops. This aligns with sustainable agriculture principles, promoting environmentally friendly pesticide degradation methods and contributing to more sustainable farming practices.