ABSTRACT Oryctes rhinoceros L. is the main pest of Elaeis guineensis Jacq. Biological control using Metarhizium anisopliae fungus which has been widely studied to control O. rhinoceros. The use of M. anisopliae is preferable to palm oil empty fruit bunch which composted. This research aims to determine the application period of the M. anisopliae which can be categorized as a biopesticide in pa…