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<p>This investigation explores the effectiveness of pesticide-tolerant <i>Azospirillum brasilense</i>, a nitrogen-fixing bacterium, in enhancing rice crop development and productivity in pesticide-contaminated soils. The research examines the bioinoculant's ability to endure pesticide stress and promote growth in agricultural areas treated with chemical fertilizers and pesticides. To validate its tolerance, <i>Azospirillum brasilense</i> was tested against imidacloprid and carbendazim, revealing remarkable resilience with minimum inhibitory concentrations of 5.4 and 0.11&#xa0;ppm, respectively. The study then evaluated the influence of <i>Azospirillum</i> sp. application via seed treatment, seedling application, and broadcasting in the presence and absence of pesticides. Initial inoculation significantly increased soil microbial activities compared to control treatments. Moreover, bacterium application led to statistically significant enhancements in growth parameters, including plant height, panicle length, and effective tillers per square meter, alongside improvements in yield parameters. Notably, this pioneering research demonstrates the potential of imidacloprid and carbendazim-tolerant <i>Azospirillum brasilense</i> to rejuvenate soil vitality, augment rice crop yields, and advance sustainable agricultural methodologies. By exploring the bacterium's growth-promoting functions in pesticide-contaminated soils, this study provides valuable insights into developing eco-friendly agricultural practices. Overall, the findings highlight <i>Azospirillum brasilense</i>'s potential as a bioinoculant for enhancing rice crop productivity and sustainability.</p>

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Imidacloprid- and Carbendazim- tolerant nitrogen fixing Azospirillum improved soil health, growth and yield of rice crop in pesticide amended soils

  • 期刊论文

  • 发表日期：

    2025年1月9日

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  • Jupinder Kaur,
  • S. Srivignesh,
  • Vishnu,
  • Sohan Singh Walia

摘要

This investigation explores the effectiveness of pesticide-tolerant Azospirillum brasilense, a nitrogen-fixing bacterium, in enhancing rice crop development and productivity in pesticide-contaminated soils. The research examines the bioinoculant's ability to endure pesticide stress and promote growth in agricultural areas treated with chemical fertilizers and pesticides. To validate its tolerance, Azospirillum brasilense was tested against imidacloprid and carbendazim, revealing remarkable resilience with minimum inhibitory concentrations of 5.4 and 0.11 ppm, respectively. The study then evaluated the influence of Azospirillum sp. application via seed treatment, seedling application, and broadcasting in the presence and absence of pesticides. Initial inoculation significantly increased soil microbial activities compared to control treatments. Moreover, bacterium application led to statistically significant enhancements in growth parameters, including plant height, panicle length, and effective tillers per square meter, alongside improvements in yield parameters. Notably, this pioneering research demonstrates the potential of imidacloprid and carbendazim-tolerant Azospirillum brasilense to rejuvenate soil vitality, augment rice crop yields, and advance sustainable agricultural methodologies. By exploring the bacterium's growth-promoting functions in pesticide-contaminated soils, this study provides valuable insights into developing eco-friendly agricultural practices. Overall, the findings highlight Azospirillum brasilense's potential as a bioinoculant for enhancing rice crop productivity and sustainability.