KARAKTER ISOLAT JAMUR RIZOSFER TANAMAN KOPI (Coffea sp.) DAN JAMUR PENYEBAB BUSUK BUAH KOPI

Abstract

Coffee pod rot disease (Coffea sp.) is one of the diseases that can reduce fruit quality. This coffee fruit rot disease is attacked by a fungus (Fusarium sp.). Control of coffee berry rot disease can be done by using biological agents in the form of rhizosphere fungi which have antagonistic properties against pathogenic fungi. This study aims to determine the types of fungi, macroscopic and microscopic characteristics of fungi isolated from coffee cherries with symptoms of fruit rot and rhizosphere fungi of coffee plants. Isolation of pathogenic fungi and rhizosphere was carried out by the dilution method. The pathogenic fungi that were isolated from the coffee fruit with rotten symptoms were Fusarium sp. JPTK1 and Fusarium sp. JPTK2. Fusarium sp. JPTK1 has a round shape and a cotton-like texture, while the fungus Fusarium sp. JPTK2 is round in shape with a cotton-like and wavy texture. The rhizosphere fungi that were isolated from the roots of healthy coffee plants, namely Aspergillus sp. JRTK1, Penicillium sp. JRTK2, and Trichoderma sp. JRTK3. Aspergillus sp. JRTK1 has black colonies on the lower surface and white on the lower surface. The fungus Penicillium sp. JRTK2 has a green top surface with white edges and a pink bottom surface with yellow edges. Trichoderma sp. JRTK3 has a dark green color on the top surface and white on the bottom surface.