Toxicity of Several Insecticides to Plutella xylostella L.in Harbin

Taking Plutella xylostella L.as research object,six insecticides were investigated for their indoor toxicities against Plutella xylostella L.collected from Harbin area by leaf-dipping method.The results indicated that the toxicity of Chlorantraniliprole to Plutella xylostella L.was the hightest and the LC50 was only 0.99 mg/L,the toxicity of Alpha-cypermethrin to Plutella xylostella L.was the lowest and the LC50 was 50.08 mg/L.The toxicities of six insecticides were ChlorantraniliproleSpinosadBacillus thuringiensis Diafenthiuron Abamection Alphacypermethrin,Therefore,Chlorantraniliprole could be used as the preferred insecticide for control Plutella xylostella L.in Harbin area.