UJI EFEKTIFITAS TRICHODERMA SP. DARI PERKEBUNAN DAERAH JEMBER DAN TRENGGALEK SEBAGAI AGENS HAYATI PENYAKIT BUSUK BUAH KAKAO (PHYTOPHTORA PALMIVORA) SECARA IN VITRO

coast and Ghana, so it is not surprising that cocoa is a mainstay of plantation crops in Indonesia. Fruit rot disease damages cocoa pods in Indonesia with significant losses. This disease is caused by P. Palmivora. According to Tahi etal., (2007) & Kusumadewi (2011), this pathogen has attacked all parts of cocoa growing. Fruit rot is a serious threat to the production of cocoa on Java. Rates of P. palmivora attacks vary, more than 10% occur in Peninsular Malaysia and 80-90% in Cameroon. In Java, losses due to this disease reduce yields 33-50%. This study uses a completely randomized design (CRD) method. RAL is arranged factorially with 2 parameters. The first factor was Trichoderma sp. Type, the second factor was Phytophthora palmivora type, all treatment combinations were repeated 3 times. So Trichoderma sp. there are 4 and the type of P. palmivora there are 4 total 4 x 4 = 16 x 3 = 48. Antagonistic test data or percentage of removal of Trichoderma sp. P. palmivora was analyzed using analysis of variance (ANOVA) and then further testing using 5% BNJ. Trichoderma isolate sp. origin of Jember district and Trenggalek district were able to act as antagonists against P. palmivora with the highest inhibitory value of 78% from Trenggalek district of Suruh sub-district and lowest inhibitory power of 70% from isolates of Jember district of banjarsari sub-district. Trichoderma sp. from Trenggalek district, Suruh sub-district (TR1P1) 70% more effective against the causes of cocoa pod rot disease (P. palmivora) from Trenggalek district, Suruh sub-district. Characteristics of Trichoderma sp. The origin of Trenggalek Regency and Jmber Regency in inhibiting the growth of Phytophthora palmivora has the same type, namely Trichoderma harzianum