Potensi Dark Septate Endophyte Isolat Sumatera Utara terhadap Ganoderma boninense Penyebab Busuk Pangkal Batang Kelapa Sawit
Potential of Dark Septate Endophytes North Sumatra Isolates Against Ganoderma boninense the Pathogen of Basal Stem Rot of Oil Palm
Abstract
Potential of Dark Septate Endophytes North Sumatra Isolates Against Ganoderma boninense the Pathogen of Basal Stem Rot of Oil Palm
Basal stem rot caused by Ganoderma boninense causes significant damage to oil palm plantations in Southeast Asia, including in Indonesia. Intensive use of chemical fungicides against Ganoderma can negatively affect the environment, health, and disrupt the ecological balance. Application of microbe as biocontrol agents using antagonistic endophytic fungi, among others is dark septate endophyte (DSE), is potential as management control strategy for Ganoderma. The aim of this experiment is to obtain local DSE fungi isolates from North Sumatra from Ganoderma endemic areas with the potential for biological control agents to G. boninense. DSE fungi exploration was carried out in the area with moderate incidence of Ganoderma (5%-30%) in Galang District, Deli Serdang Regency and the test was conducted in vitro. Five isolates of DSE fungi was obtained, namely II 3 A CM, Gelap A, II 4 CM, II 3 A CC, and abu-abu. In vitro inhibition of G. boninense by DSE isolates at 7 days after inoculation are Gelap A isolate (100%), abu-abu isolate (90.87%), II 3 A CC (82.83%), II 3 A CM (82.23%), and II 4 CM (74.88%), respectively. This finding provides basic data about potential of DSE fungi as a biological agent for G. boninense and it is the first report for DSE fungi origin from oil palm in North Sumatra.
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