Uji Efektivitas Beberapa Dosis Bakteri Simbion Oryctes rhinoceros sebagai Agens Antagonis terhadap Jamur Ganoderma boninense di Laboratorium

Abstract

Oil palm (Elaeis guineensis Jacq.) is an important plantation crop that produces food oil, industrial oil, a:nd biofuel (biodiesel). One of the obstacles in oil palm plantations is basal stem rot disease caused by Ganoderma boninense. G. boninense is a pathogenic fungus that causes basal stem rot disease in oil palm. The use of antagonistic microorganisms can suppress, inhibit or eliminate plant pathogen populations. One way to utilise antagonistic microorganisms is by using symbiont bacteria. 0. rhinoceros larvae are one of the insects that have synibiont bacteria. This study aims to determine the effectiveness of several doses and symbiont bacteria of 0. rhinoceros larvae as antagonists against Ganodermafungi. This research was conducted at the Plant Disease Laboratory, Faculty of Agriculture and Microbiology Laboratory, Faculty of Mathematics and Natural Sciences, University of North Sumatra in Desember 2023 to May 2024. This stitdy used a factorial Completely Randomised Design (CRD) ,vith 2 f actors and 5 replicates. The results sho,ved th.at the morphology and biochemistry of symbiont bacteria had differences and ,vere able to inhibit the gro,vth of G. boninensefungi in vitro.