Division of Agricultural Chemicals, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India.
Bull Environ Contam Toxicol. 2021 Jul;107(1):160-166. doi: 10.1007/s00128-021-03209-4. Epub 2021 Apr 2.
Flupyradifurone is a novel neonicotinoid insecticide, mainly used in okra in subtropical conditions for controlling whitefly and jassids. The present experiment was designed to generate information on the leaching behavior of flupyradifurone, 3-[(6-chloropyridin-3-yl)methyl-(2,2-difluroethyl)amino]-2H-furan-5-one, under different rainfall conditions by using packed soil columns. Under the continuous flow conditions, a significant quantity of flupyradifurone, 67.76% and 50.61% were recovered at 0 to 5 cm soil depth in case of both clayey and sandy loam soil, respectively. A considerable amount of the residue was confined to 0 to 20 cm soil depth, with or without farmyard manure (FYM) amendment. Under varying water flow condition, distribution of the residue in the upper 0 to 5 cm soil depth got enhanced (> 90% recovery). Among the test soils, residues were detected from the leachate fraction of sandy soil (0.08 µg/mL) only. The study pointed out that leaching of flupyradifurone in sandy loam soil got decreased after using FYM. The leaching of flupyradifurone increased with the increasing amount of water (40 to 160 mL) and the residues continued to travel down to the lower depth. It can be concluded that the use of FYM may be a viable option for reducing the mobility of flupyradifurone in sandy loam soil.
氟吡呋喃酮是一种新型烟碱类杀虫剂，主要用于亚热带条件下的秋葵，用于防治粉虱和盲蝽。本实验旨在通过使用填充土柱生成氟吡呋喃酮（3-[(6-氯吡啶-3-基)甲基-(2,2-二氟乙基)氨基]-2H-呋喃-5-酮）在不同降雨条件下的淋溶行为信息。在连续流动条件下，在粘性土和砂壤土中，分别有 67.76%和 50.61%的氟吡呋喃酮在 0 至 5 cm 土壤深度处被大量回收。相当数量的残留物质被限制在 0 至 20 cm 土壤深度内，无论是否添加农家肥 (FYM)。在不同的水流条件下，残留物质在 0 至 5 cm 土壤深度的上部分布得到增强（>90%的回收率）。在测试土壤中，仅在砂壤土的淋出液部分检测到残留物质（0.08µg/mL）。研究指出，在使用 FYM 后，氟吡呋喃酮在砂壤土中的淋溶减少。氟吡呋喃酮的淋溶随着水量的增加（40 至 160 mL）而增加，残留物质继续向下迁移到较深的土层。可以得出结论，使用 FYM 可能是减少氟吡呋喃酮在砂壤土中迁移性的可行选择。
