Scholarlink

<p>Cutworms, particularly <i>Agrotis ipsilon</i> (Hufnagel), are major pests of cabbage, causing substantial yield losses. Their concealed feeding habit and polyphagous nature complicate management, often requiring synthetic insecticides that raise concerns regarding safety and soil health. Although several insecticides have been evaluated for their efficacy against <i>A. ipsilon</i>, little is known about their concurrent effects on soil microbial populations and enzymatic activities in cabbage agroecosystem. Therefore, this study bridges that gap by assessing both pest control efficacy and soil microbial dynamics, thereby providing insights into sustainable pest management strategies under current agricultural practices. To address this, a study was conducted to assess the effectiveness of four insecticides in reducing the infestation of <i>A. ipsilon</i> in cabbage and to determine its impact on soil biological health. Among all the insecticides, the maximum per cent reduction of <i>A. ipsilon</i> was observed in the plots treated with chlorantraniliprole 0.4 GR (Granule) followed by imidacloprid 70 WDG (Water Dispersible Granule) which was statistically <i>at par</i> with clothianidin 50 WDG. Soil microbial population analysis revealed a decrease in both bacterial and fungal colonies in the treated plots compared to control, with chlorantraniliprole 0.4 GR-treated plots maintaining the highest microbial populations, followed by clothianidin 50 WDG. Both phosphomonoesterase (PME) and fluorescein diacetate (FDA) activity in treated soils significantly decreased relative to the control. Chlorantraniliprole 0.4 GR-treated plots recorded the highest PME and FDA activity, followed by clothianidin 50 WDG and thiamethoxam 25 WG (Wettable Granule). The greatest reductions in microbial populations, PME and FDA activity were observed at 15 Days After Spraying (DAS), but these parameters gradually recovered by 30 and 45 DAS, indicating soil resilience to the insecticides. These findings highlight chlorantraniliprole 0.4 GR as an effective and economically viable solution for managing <i>A. ipsilon</i> in cabbage while minimizing long-term adverse effects on the soil ecosystem.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Efficacy of certain insecticides against Agrotis ipsilon (Hufnagel) in cabbage and its influence on soil microbial dynamics

  • 期刊论文

  • 发表日期：

    2026年5月13日

查看全文
  • Sagarika Kalita,
  • Kasturi Choudhury,
  • Anjuma Gayan,
  • Priyanka Handique,
  • Malabya Bhuyan,
  • Badal Bhattacharyya

摘要

Cutworms, particularly Agrotis ipsilon (Hufnagel), are major pests of cabbage, causing substantial yield losses. Their concealed feeding habit and polyphagous nature complicate management, often requiring synthetic insecticides that raise concerns regarding safety and soil health. Although several insecticides have been evaluated for their efficacy against A. ipsilon, little is known about their concurrent effects on soil microbial populations and enzymatic activities in cabbage agroecosystem. Therefore, this study bridges that gap by assessing both pest control efficacy and soil microbial dynamics, thereby providing insights into sustainable pest management strategies under current agricultural practices. To address this, a study was conducted to assess the effectiveness of four insecticides in reducing the infestation of A. ipsilon in cabbage and to determine its impact on soil biological health. Among all the insecticides, the maximum per cent reduction of A. ipsilon was observed in the plots treated with chlorantraniliprole 0.4 GR (Granule) followed by imidacloprid 70 WDG (Water Dispersible Granule) which was statistically at par with clothianidin 50 WDG. Soil microbial population analysis revealed a decrease in both bacterial and fungal colonies in the treated plots compared to control, with chlorantraniliprole 0.4 GR-treated plots maintaining the highest microbial populations, followed by clothianidin 50 WDG. Both phosphomonoesterase (PME) and fluorescein diacetate (FDA) activity in treated soils significantly decreased relative to the control. Chlorantraniliprole 0.4 GR-treated plots recorded the highest PME and FDA activity, followed by clothianidin 50 WDG and thiamethoxam 25 WG (Wettable Granule). The greatest reductions in microbial populations, PME and FDA activity were observed at 15 Days After Spraying (DAS), but these parameters gradually recovered by 30 and 45 DAS, indicating soil resilience to the insecticides. These findings highlight chlorantraniliprole 0.4 GR as an effective and economically viable solution for managing A. ipsilon in cabbage while minimizing long-term adverse effects on the soil ecosystem.