Upper stem rot (USR) is one of diseases that are a problem in oil palm cultivation and disrupt growth and reduce the production of fresh fruit bunches. This research was conducted to determine the chitinase activities production of Trichoderma virens LBKURCC71 and LBKURCC85 endophytic and it’s potential as biological agents of upper stem rot disease in oil palm caused by Ganoderma sp. qualita…