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KMID : 0903519960390060488
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Journal of the Korean Society of Agricultural Chemistry and Biotechnology
1996 Volume.39 No. 6 p.488 ~ p.493
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Study on Pesticide Runoff from Soil Surface
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김용화/Kim, Yong Hwa
박창규/김정한/김균/Park, Chang Kyu/Kim, Jeong Han/Kim, Kyun
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Abstract
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As a first step of pesticide runoff studies, runoff losses of captafol were measured under natural rainfall conditions in apple orchard area. The maximum concentration of captafol was 180 ppb at 5 th sampling period when the rainfall occurred within 24 hours after captafol was applied, and the concentration of samples from other periods was below than 20 ppb. Total runoff loss of captafol was below 0.1%. About 10 fold of dilution factor was observed at the merging point with stream near outlet from orchard and about 50 fold was observed at the next merging point which is located further down. Therefore, captafol will not harm the aquatic organisms due to dilution factor(10∼50 fold) and rapid hydrolytic degradation rate even when it was run off into a stream nearby.
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KEYWORD
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