JS118 degradation and final residue in cauliflower plants and soil

The dynamic degradation and final residue of JS118 in cauliflower and soil were investigated in a Fuzhou suburb in 2005~2006.The results showed that(a) the 14-days average final residue in the cauliflower leaves was 0.20 mg·kg-1,(b) no residue detected in the soil in 2005,but 0.38 mg·kg-1 in 2006,and(c) 0.04 mg·kg-1 of the residue was found in the flowers.The half-life of JS118 in cauliflower leaves was determined to be 3.19 d in 2005 and 4.19 d in 2006.In the flowers,it was 4.07 d in 2006,and in the soil 6.43 d in 2005 and 5.73 d in 2006.