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Establishment of Pre-Harvest Residue Limit(PHRL) of the Fungicide Amisulbrom during Cultivation of Winter-Grown Cabbage
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 Title & Authors
Establishment of Pre-Harvest Residue Limit(PHRL) of the Fungicide Amisulbrom during Cultivation of Winter-Grown Cabbage
Ahn, Kyung-Geun; Kim, Gyeong-Ha; Kim, Gi-Ppeum; Kim, Min-Ji; Hong, Seung-Beom; Hwang, Young-Sun; Kwon, Chan-Hyeok; Son, Young Wook; Lee, Young Deuk; Choung, Myoung-Gun;
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BACKGROUND: Supervised residue trials were conducted to establish pre-harvest residue limit(PHRL), a criterion to ensure the safety of the pesticide residue in the crop harvest, of amisulbrom for winter-grown cabbage in two fields. Following to application of amisulbrom on the crop, time-course study was carried out to obtain the amisulbrom dissipation of statistical significance which enabled to calculate the predicted values of PHRL. METHOD AND RESULTS: During cultivation under greenhouse condition, samples of winter-grown cabbage were collected at 0, 1, 3, 5, 7 and 10 days after amisulbrom application, and subjected to residue analysis. Analytical method was validated by recoveries ranging 93.7~100.0% as well as limit of quantitation(LOQ) of 0.04 mg/kg. Amisulbrom residues in winter-grown cabbage gradually decreased as time elapsed. The dissipation rate of the residue would be affected by intrinsic degradation along with dilution by the cabbage growth. The decay pattern was well fitted by the simple first-order kinetics. CONCLUSION: Biological half-lives of amisulbrom in winter-grown cabbage ranged 3.7~4.1 days in two field conditions. Based on the regression of amisulbrom dissipation, PHRLs of amisulbrom in winter-grown cabbage were recommended as 8.86~9.47 and 4.21~4.35 mg/kg for 10 and 5 days before harvest, respectively.
Amisulbrom;Biological half-life;Pre-harvest residue limit(PHRL);Winter-grown cabbage;
 Cited by
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