1Institute of Plant Protection，Shandong Academy of Agricultural Sciences，Shandong Key Laboratory of Plant Virology，Ji’nan 250100，Shandong，China|2Weihai Branch of Shandong University，Weihai 264209，Shandong，China
Abstract：A field experiment was conducted to reveal residual degradation dynamics and the final residues of flufiprole in cabbage and soil．And its safe application in cabbage was assessed．The results of degradation dynamic test showed that the half-life of flufiprole in soil and cabbage was 2.89-4.41 d and 1.18-1.28 d，respectively．The final residue tests showed that flufiprole 80% WG was sprayed for 2 to 3 successive times at application dose 31.2，46.8 g?hm-2 at 7th，14th and 21st day after the last application．The final residues of flufiprole in cabbage was 0.002 1-0.016 mg?kg-1，which was below the MRLs 0.05 mg?kg-1．Therefore，pre-harvest interval was suggested to be 7 days when flufiprole was applied at recommended dosage for cabbage．
