Comparison of Susceptibility of Plutella xylostella to Nine Insecticides in Different Areas of Jiangxi Province

The susceptibility of field populations of Plutella xylostella from five areas of Jiangxi province to nine insecticides was tested by using leaf-dipping method in 2013.It was found that 5 field populations of Plutella xylostella showed sensitive or low resistance to BT,Chlorfenapyr and Diafenthiuron,moderate or middle-low resistance to Chlorfluazuron,Chlorantraniliprole and Indoxacarb,and high resistance to Abamectin and beta-Cypermethrin.Among the tested five populations,the field population in Jishui revealed a high resistance to Spinosad,while the others showed a moderate or middle-low resistance to this insecticide.