Residue Dynamics and Safety Evaluation of Difenoconazole in Apple and Soil
A field experiment and laboratory testing were conducted to reveal residual degradation dynamics and the final residues of difenoconazole in apple and soil. The results showed that the half-life of difenoconazole in apple and soil were 7. L~10. 3 d and 11. 0 ~ 14. Id respectively. When the apple was sprayed 4-~ 5 times with 66. 67 mg a. I. /kg and 100 mg a. I. /kg difenoconazole 10% WP, the last application was done 7d before harvesting, the residue of difenoconazole in the harvested apple was lower than 0. 5 mg/kg. It was demonstrating that the preharvest interval of difenoconazole on apple was 7 d.
NETL
NSTL
万方数据
维普
