This study aims to determine the effect of biofertilizer application on the control of stem borer pests (Chilo sacchariphagus) in sugarcane plants that have been carried out in November-April 2023 on PTPN land in the Cinta Manis District. The method used is the insitu experimental method by observing the percentage of pest attacks, and the intensity of pest attacks on sugarcane plants, both on …