除草剤ベンチオカーブによる水稲わい化症の圃場における発生機構
書誌事項
- タイトル別名
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- Mechanism of Dwarfing of Rice Plant in Paddy Field Sprayed with Benthiocarb Herbicide
- 2. Determination of Benthiocarb and Dechlorinated Benthiocarb in Soil and Water
- 第2報 土壌と田面水中におけるベンチオカーブと脱塩素ベンチオカーブの消長
抄録
A herbicide benthiocarb [Saturn®, S-(4-chlorobenzyl) N, N-diethylthiocarbamate] and a metabolite dechlorinated benthiocarb (S-benzyl N, N-diethylthiocarbamate) were determined in soil and water samples from many plots of a paddy field tested on the dwarfing of rice plant caused by benthiocarb application.<br>Contents of the metabolite in soils varied with wide range according to dates and sites sampled. In soils sampled to a depth of 10cm, only trace amounts of the metabolite were at first detected, but the contents started to increase on 25 days after the herbicide application and reached to maximum between 35 to 45 days after the application, and then, decreased rapidly. High levels of the metabolite were detected in soils from plots damaged severely with dwarfing, furthermore, in soils near to plants damaged severely with dwarfing. The contents of the metabolite were higher at the upper layer (0 to 5cm), and were very low at the lower layers in soil. The metabolite was also detected in water samples in the same way as the soils.<br>The metabolite is known as a highly phytotoxic substance to rice plant, so the contents of the metabolite in soil and water could almost perfectly account for the dwarfing of rice plant. Residue of benthiocab itself in soil and water does not affect so fatally to rice plant. Therefore, we conclude that the occurrence of dechlorinated benthiocarb from the herbicide in soils caused the dwarfing of rice plant.
収録刊行物
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- 雑草研究
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雑草研究 24 (4), 272-280, 1979
日本雑草学会
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詳細情報 詳細情報について
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- CRID
- 1390282679256241280
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- NII論文ID
- 130003995781
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- ISSN
- 18824757
- 0372798X
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可