Abstract

Basal stem rot caused by Ganoderma boninense causes fall and death of oil palm crops, and will drastically reduce plantation productivity by up to 50% and become one of the most serious problems in oil palm cultivation. This study aims to determine the effectiveness of the Colonized System of Ganoderma Vaccine (CHIPS®), as a biocontrol agent against the suppression of Ganoderma disease that infects oil palm trees in-field conditions. This research was conducted from early 2016 to the end of 2020 in a plantation located in Langkat area, North Sumatra by using 216 trees on 1 block as a sample experiment. Plants that infected with Ganoderma is treated with T1 treatment (MOAF™ & CHIPS®) shows the value of Disease Severity Index (DSI) decreasing to 37.50%, compare to T2 treatment (NPK Granular Fertilizer 13-6-27 & Trichoderma bio fungicides) which has DSI value of 100% in week 232 (in 2020) and C1 treatment (control) with the highest DSI value of 100% in week 212 (in 2020). The conclusions of this study shows that the treatment of T1 (MOAF™ & CHIPS®) is more successful in eradicating Ganoderma and have the highest profit ratio than any other treatments. The results of this study are useful as references for in-field inspection and large-scale production.

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