Division of Agricultural Chemicals, Indian Agricultural Research Institute, New Delhi 110012, India.
Bull Environ Contam Toxicol. 2012 Feb;88(2):229-33. doi: 10.1007/s00128-011-0429-2. Epub 2011 Oct 16.
Flubendiamide insecticide is widely used in Indian subtropical condition to control lepidopteron pests mainly in rice and cotton. The present study reports leaching behaviour of flubendiamide, N(2)-[1,1-dimethyl-2-(methylsulfonyl)ethyl]-3-iodo-N(1)-[2-methyl-4-[1,2,2,2-tetrafluoro-1 (trifluoromethyl)ethyl] phenyl]-1,2-benzene dicarboxamide, in packed soil columns under different rainfall conditions. Flubendiamide did not leach out of the 25 cm long soil columns even after percolating water equivalent to 462.18 mm rainfall. After leaching with water equivalent to 462.18 mm rainfall, in analytical grade treatment, 68.06% of the recovered flubendiamide was the major amount present in 5-10 cm depth whereas in the formulation 67.22% of the recovered flubendiamide was confined to 0-5 cm depth. Results revealed that with percolating 160 mL of water residues of desiodo flubendiamide detected up to 20-25 cm layer along with 9.47% residues in this layer, indicating that metabolite is more mobile as compared to analytical grade flubendiamide and 39.35% SC formulation. Formulation slowed the downward mobility of flubendiamide in soil column. Flubendiamide is slightly mobile in sandy loam soil, but desiodo flubendiamide is relatively more mobile and may leach into ground water.
氟苯虫酰胺杀虫剂在印度亚热带条件下广泛用于防治鳞翅目害虫，主要在水稻和棉花上使用。本研究报告了氟苯虫酰胺在不同降雨条件下填充土壤柱中的淋溶行为。氟苯虫酰胺没有从 25cm 长的土壤柱中淋出，即使淋过相当于 462.18mm 降雨量的水。在淋溶相当于 462.18mm 降雨量的水后，在分析级处理中，回收的氟苯虫酰胺有 68.06%主要存在于 5-10cm 深度，而在制剂中，有 67.22%的回收氟苯虫酰胺局限于 0-5cm 深度。结果表明，随着 160ml 水的渗滤，在 20-25cm 层中检测到脱碘氟苯虫酰胺的残留，在该层中残留 9.47%，表明代谢物比分析级氟苯虫酰胺和 39.35%的 SC 制剂更具移动性。制剂减缓了氟苯虫酰胺在土壤柱中的向下移动性。氟苯虫酰胺在砂壤土中略有移动性，但脱碘氟苯虫酰胺的移动性相对较强，可能会淋入地下水。
