Oil palm is susceptible to several fungal diseases, one of which is basal stem rot. Basal stem rot, caused by the fungus Ganoderma boninense, is a major problem in oil palm cultivation in Southeast Asia. The use of Kaempferia galanga and chitin in the serial culturing process are expected to serve as effective biocontrol agents by breaking down the cell walls of Ganoderma, thereby inhibiting it…