Keragaman Trichoderma Spp. Asal Rizosfer Tanaman Kelapa Sawit Di Kabupaten Ka…

ABSTRACT Palm oil is one of the important plantation commodities in Riau Province. One of the causes of the decline in oil palm production in Riau Province is stem rot disease caused by the pathogenic fungus Ganoderma sp. This study aims to determine the diversity of Trichoderma spp. the origin of the rhizosphere of oil palm plants in Kampar Regency which was attacked by Ganoderma sp. and …