Abstract:

Abstract : It was determined the virulence of Verticillium lecanii MZ041024 on Larvae and pupae of Lycoriella pleuroti. The bioassay results indicated that insecticidal activity of ethyl acetate was higher than that of others, their mortality rate of larvae and pupae respectively were 91.79% and 88.94%, with LC50 values of 1.745×105 spores /ml and 4.723×105 spores /ml ; LT50 was respectively3.51d and 3.78d, against Larvae and pupae of Lycoriella pleuroti , respectively.