Aerobic Soil Metabolism of a New Herbicide, LGC-42153

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• 作者：Jin Kim ; Kwang-Hyeon Liu ; Seung-Hun Kang ; Suk-Jin Koo ; and Jeong-Han Kim
• 刊名：Journal of Agricultural and Food Chemistry
• 出版年：2003
• 出版时间：January 29, 2003
• 年：2003
• 卷：51
• 期：3
• 页码：710 - 714
• 全文大小：111K
• 年卷期：v.51,no.3(January 29, 2003)
• ISSN：1520-5118

文摘

To elucidate the fate of a new sulfonylurea herbicide, LGC-42153 [N-((4,6-dimethoxypyrimidin-2-yl)aminocarbonyl)-2-(1-methoxyacetoxy-2-fluoropropyl)-3-pyridinesulfonamide], in soil, an aerobic soilmetabolism study was carried out for 120 days with [¹⁴C]LGC-42153 applied to a loamy soil. Thematerial balance ranged from 90.7 to 101.5% of applied herbicide. The half-life of [¹⁴C]LGC-42153was calculated to be approximately 9.0 days. The degradation products resulted from the cleavageof the sulfonylurea bridge. The metabolites identified during the study were N-((4,6-dimethoxypyrimidin-2-yl)aminocarbonyl)-2-(1-hydroxy-2-fluoropropyl)-3-pyridinesulfonamide, 2-(1-hydroxy-2-fluoropropyl)-3-pyridinesulfonamide, and 4,6-dimethoxy-2-aminopyrimidine. No significant volatile products or[¹⁴C]carbon dioxide was observed during the study. Nonextractable ¹⁴C-residue reached 14.4-30.5%of applied material at 120 days after treatment, and radioactivity was distributed mostly in the huminand fulvic acid fractions.Keywords: LGC-42153; herbicide; sulfonylurea; metabolism; soil