モデル水田における除草剤クロメトキシニルレおよびベンチオカーブの水系への流出と土壌中での消長

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4件

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タイトル別名
  • Effluence of the Herbicides Chlomethoxynil and Benthiocarb to Water System and Their Fates in Soil Using a Model Paddy Field
  • モデル水田における除草剤クロメトキシニルおよびベンチオカーブの水系への流出と土壌中での消長
  • モデル スイデン ニ オケル ジョソウザイ クロメトキシニル オヨビ ベンチオ
  • Studies on the Behavior of Herbicides in Soil and Water in a Paddy Field (Part 2)

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The behavior and disappearance of the herbicides chlomethoxynil and benthiocarb (thiobencarb) in soil and surface water were investigated using a model paddy field (an ordinary culture and a bare ground) under a controlled rate of drainage. The concentrations of chlomethoxynil in the effluent water were 4-6ppb at maximum and decreased gradually to 0.1ppb within 60 days after its application. A similar residue pattern of chlomethoxynil in water was observed both in ordinary culture and under bare ground conditions. A positive correlation (r=0.96) was observed between the concentration in soil and that in water. Benthiocarb concentration in the effluent water was 380ppb at maximum and decreased rapidly below the detection limit (1ppb) in 25-30 days after the application. The estimated half-life values of chlomethoxynil and benthiocarb in soil were 10-22 days and 10-30 days, respectively.

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