Toxicity and field efficacy of novel insecticide ZJ3265 against five lepidopterous pests

ZJ3265(E+Z)-2-2-(4-cyanophenyl)-1-3-(trifluoromethyl)phenylethylidene-N- hydrazinecarboxamide is a novel insecticide in China.Toxicity of ZJ3265 against Mythimna separata,Plutella xylostella and Prodenia litura was tested in the laboratory by leaf-dipping method,and the field efficacy of ZJ3265 in controlling P.xylostella,P.litura,Spodoptera exigua and Pieris rapae was evaluated.The results showed that the LC50 values of ZJ3265 against M.separata,P.xylostella and P.litura were 1.37(1.16-1.62),18.53 (15.13-22.10) and 15.40 (11.98-18.85) mg/L,respectively.The control efficacy of ZJ3265(240 SC)against P.xylostella,P.litura,S.exigua and P.rapae was 74.9％,76.7％,70.3% and 84.4％,respectively,three days after the treatment of ZJ3265 at 120 g a.i./ha.No crop injury was observed at the dosage of the tests.