殺虫剤ピラクロホスのキャベツにおける代謝

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 被引用文献2件 参考文献13件
  • 田代 茂喜
    Agricultural Research Laboratories, Takeda Chemical Industries, Ltd.
  • 山元 章裕
    Takeda Analytical Research Laboratories, Ltd.
  • 杉田 紀夫
    Agricultural Research Laboratories, Takeda Chemical Industries, Ltd.
  • 岡田 嘉之
    Agricultural Research Laboratories, Takeda Chemical Industries, Ltd.

書誌事項

タイトル別名
  • Metabolic Fate of Insecticide Pyraclofos in Cabbage Plants
  • 殺虫剤ピラクロホスのキャベツにおける代謝〔英文〕
  • サッチュウザイ ピラクロホス ノ キャベツ ニ オケル タイシャ エイブン

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Metabolic fate of pyraclofos, 1-(4-chlorophenyl) pyrazol-4-yl ethyl S-propyl phosphorothiolate (Voltage), in cabbage plants was studied under laboratory conditions using 14C-pyraclofos labeled at the benzene ring. When 14C-pyraclofos was applied to the leaf surface of the plants at the rate of 2μg/cm2, pyraclofos disappeared from the treated leaf with a half-life of approximately one week. Thirty days after foliar application, most of 14C-radioactive carbon (14C) was found in the treated site of the leaves, however, 14C translocated to the nontreated portions was a small extent. Major metabolic pathways of pyraclofos in cabbage leaves were cleavage of P-O-aryl bond to yield 1-(4-chlorophenyl)-4-hydroxypyrazole, and followed by conjugation with sugars such as glucopyranoside or malonylglucopyranoside. A small amount of the parent compound was detected in the treated site, but not in the nontreated portions of the leaves. When cabbage plants were cultivated for 30 days using soils treated with 14C-pyraclofos at the rate of 10ppm, most of the 14C was found in the treated soil. A small amount of 14C was translocated to the plants, and most of it was in the roots. On the other hand, 14C detected from the edible portion, leaf and stem was very small extent, and no parent compound was determined.

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