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KMID : 0903520040470020238
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Journal of the Korean Society of Agricultural Chemistry and Biotechnology
2004 Volume.47 No. 2 p.238 ~ p.243
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Characteristic of Decomposition of Residual Pesticides on Diazinon and Endosulfan in Young Radish
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Choi Geun-Young
Kim Jun-Hyoung
Han Byung-Jae
Jeong Yang-Mo
Seo Hye-Young
Shim Sung-Lye
Kim Kyong-Su
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Abstract
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To investigate the changes in content of residual pesticides for safety production of young radishes in the production steps in greenhouse and to evaluate the safety of young radishes in the final consuming step, biological half-life of pesticides (diazinon, endosulfan) in packaging products was studied. Samples were collected regularly from 2 hours to 10 days after the distribution of pesticides in young radishes. The contents of residual pesticides in young radishes during cultivating in greenhouse as the levels of distribution concentrations reduced with time. During 10 days of pesticides distribution, decomposition rate of pesticides were diazinon > endosulfan. A half-life of endosulfan was 0.6 day longer than diazinon because endosulfan derived persistent endosulfan sulfate. To produce the safe young radish, after the distribution of the pesticides the desirable harvest time based on maximum residue limit (MRL) was 6th day diazinon for and 10th day for endosulfan.
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KEYWORD
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young radish, residual pesticides, diazinon, endosulfan
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