除草剤イマゾスルフロンの畑地土壌中における分解および下方移行性

DOI NDLデジタルコレクション 日本農学文献記事索引 Web Site Web Site 参考文献8件
  • 味方 和樹
    Agricultural Research Laboratories, Agro Company, Takeda Chemical Industries, Ltd.
  • 太田 一成
    Agricultural Research Laboratories, Agro Company, Takeda Chemical Industries, Ltd.
  • 田代 茂喜
    Planning and Coordination Department, Agro Company, Takeda Chemical Industries, Ltd.

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  • Degradation and Leaching of Herbicide Imazosulfuron in Upland Soils

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Degradation of imazosulfuron in upland soils was investigated under laboratory conditions using two kinds of 14C labeled imazosulfuron. Imazosulfuron degraded with half-life of approximately 40 days, and the major degradation pathway was the hydrolysis of the sulfonylurea bond to give ADPM and IPSN. The leaching studies of imazosulfuron using non-aged and aged soils were also conducted. It was found that imazosulfuron was less mobile in soils when the soil column was eluted with 0.02N CaCl2 solution after 30 days of aging period of time compared to non-aging. Main degradation products, ADPM and IPSN, were adsorbed in soils stronger than imazosulfuron. It was suggested that imazosulfuron dissipates relatively fast in upland soils, and the leaching potential decreases with time.

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