Metabolic Fate of Fenvalerate (Sumicidin<sup>®</sup>) in Bean Plants

OHKAWA Hideo, NAMBU Kenji, MIYAMOTO Junshi

doi:10.1584/jpestics.5.215

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Other Title

フェンバレレート (スミサイジン<sup>®</sup>) のマメ幼苗における代謝分解
フェンバレレート(スミサイジン)のマメ幼苗における代謝分解〔英文〕
フェンバレレートスミサイジンノマメヨウビョウニオケルタイシャブ

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Abstract

Metabolic fate of fenvalerate [α-cyano-3-phenoxybenzyl-2-(4-chlorophenyl) isovalerate] and the [S]-acid ester isomer in bean plants was studied under laboratory conditions. When fenvalerate and the [S]-acid isomer were each applied to the leaf surface of bean plants at a rate of 10μg per leaf, both compounds similarly disappeared from the treated leaves with half-lives of approximately 14 days. On and/or in the plants, fenvalerate and the [S]-acid isomer underwent decarboxylation, ester cleavage, hydrolysis of the CN group to CONH₂ and COOH groups, hydroxylation at 2′- and 4′-phenoxy positions, conversion of the alcohol moiety to 3-phenoxybenzyl alcohol and 3-phenoxybenzoic acid, and conjugation of the resulting carboxylic acids and alcohols with sugars. Very little of ¹⁴C was transferred to other parts of the bean plants. When bean plant seedlings were planted for 30 days in Kodaira light clay and Katano sandy loam soils treated with 1.0ppm of ¹⁴C-fenvalerate, roots retained fairly large amounts of ¹⁴C, shoots, pods and seeds contained very little ¹⁴C. No parent compound was detected in shoots.

Journal

Journal of Pesticide Science

Journal of Pesticide Science 5 (2), 215-223, 1980

Pesticide Science Society of Japan

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