Runoff of Pesticides Spread by Helicopter from Paddy Fields.
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概要
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Recently, Pesticides were spread into paddy fields using helicopters. However, improper spray of pesticides sometimes may cause serious water quality problems. In this paper, we report about the runoff of insecticides (CVMP and malathion) spread by helicopters from paddy fields.<BR>The effluent from paddy fields run into four downstream of rivers, Shin-River, Nishi-River, Hirodori-River and Old-Hirodori-River. The concentration of insecticides in the river water reached to 69.2 μg/1 (CVMP) and 7.50μg/1 (malathion) . Moreover, the concentration of CVMP in the water for irrigation reached to 277μg/1.<BR>The insecticides in the river water were disappeared within 2 days after the spray.<BR>The effluent ratio of CVMP into the rivers was 5.2% (1st examination) or 4.6% (2nd examination) .
- 日本環境化学会の論文
日本環境化学会 | 論文
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