This research was conducted from Febuary until August 2004 at the.Entomological Laboratory, Univcrsity of Sriwijaya.The purposes of this research was to know the effect of prolific age of B.bassiana isolate PD2 Pagaralam on rice media against P. xylostella third instar.The methode use completely randomized design . uring PD2 isolate grown onhalf coocked rice media. This research use 8 treatment…