포도의 재배 및 저장기간 중의 Procymidone 및 Chlorothalonil의 잔류량변화
Residual Pattern of Procymidone and Chlorothalonil in Grape During the Period of Cultivation and Storage
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참고문헌
초록
Abstract
In order to know the residual pattern of pesticides and predict to the degradation period until be- low MRL, we experimented procymidone and chlorothalonil for grape which were the most detected pesticide in grape by NAQS(National Agricultural product Quality management Service) survey. In this experiment, we sprayed those pesticides 10 days before harvest and analyzed 0, 1, 2, 3, 5, 7, 10 day sample to establish log- ical equation and to calculate DT50. Also the same day samples stored at 4℃ and 20℃, which were compared their degradation patterns. During the cultivating period, the residue amount of procymidone was changed from 1.85 mg/kg (0 day) to 0.33 mg/kg (10 day), DT50 was 3.5 days, and chlorothalonil was changed from 5.5 mg/kg (0 day) to 3.49 mg/kg (10 day), DT50 was 4.4 days. During the storage period, DT50 of procymidone and chlorothalonil at 4℃ were 10.5 and 7.6 days, and 6.3 and 6.1 days at 20℃, respectively.
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