Field evaluation of Isaria fumosorosea in controlling the diamondback moth (Plutella xylostella) in Chinese kale

摘要

Twelve entomopathogenic fungi were screened for controlling diamondback moth (Plutella xylostella L.) eggs and larvae in the laboratory. None had any significant ovicidal effect. Isaria fumosorosea CKPF-095 showed the best efficacy in controlling the 2(nd) instar larvae. It was formulated into a wettable powder at a concentration of 1 x 10(9) conidia g(-1) and used in two field tests. Both tests revealed that I. fumosorosea CKPF-095 at 1.25 x 10(13) ha(-1) showed as good efficacy as Dipel at 1 x 10(11)IU ha(-1).