Istiana, NabellaRoza, Rodesia MustikaMartina, Atria2016-01-262016-01-262016-01-26wahyu sari yenihttp://repository.unri.ac.id/xmlui/handle/123456789/7787Actinomycetes is a group of microbes which is able to produce antimicrobial compounds. Antimicrobial compounds can be used to control microbial pathogens. One of pathogens that cause plant diseases is Ganoderma boninense, a causing agent of basal-stem rotten in oil palm. The purpose of this study were to study the potential of actinomycetes isolated from peat soil at Rimbo Panjang, Kampar, Riau. Antifungal compound produced by actinomycetes with different fermentation times, 3, 5, and 7 days were tested for its activity using paper disc method. The result indicated that the isolates with 3 days of fermentation showed no antifungal activity against G.boninense. Furthermore, 6 isolates with 5 days of fermentation indicated the highest antifungal activity. The highest antifungal activity showed by KN 5.19 isolates with 5 days of fermetationenActinomycetesAntifungiGanoderma boninensestudent Paper Post Degree