SKRINING DAN UJI DAYA HAMBAT ACTINOMYCETES DARI RIZOSFER TANAMAN KOPI ARABIKA DI KABUPATEN BENER MERIAH TERHADAP Collecotrichum coffeanum

Yusnizar Yusnizar (Program Studi Ilmu Tanah, Fakultas Pertanian, Universitas Syiah Kuala, Banda Aceh, 23111, Indonesia)
Fikrinda Fikrinda (Program Studi Ilmu Tanah, Fakultas Pertanian, Universitas Syiah Kuala, Banda Aceh, 23111, Indonesia)
Syafruddin Syafruddin (Program Studi Agroteknologi, Fakultas Pertanian, Universitas Syiah Kuala, Banda Aceh, 23111, Indonesia)
Hifnalisa Hifnalisa (Program Studi Ilmu Tanah, Fakultas Pertanian, Universitas Syiah Kuala, Banda Aceh, 23111, Indonesia)
Khairini Simahtuah (Program Studi Ilmu Tanah, Fakultas Pertanian, Universitas Syiah Kuala, Banda Aceh, 23111, Indonesia)

AGROTEK: Jurnal Ilmiah Ilmu Pertanian
Vol 7, No 2 (2023): September

Actinomycetes are microorganisms of a group of gram-positive bacteria that produce uniseluser mycelium.  Colonies of Actinomycetes grow slowly, are attached to the substrate and can produce spores. Actinomycetes are known to be able to control plant pathogens. This study aims to screen and study the inhibitory power of Actinomycetes from the rhizosphere of Arabica coffee rhizosphere against Collecotrichum coffeanum. This study found Actinomycetes in the rhizosphere of Arabika coffee plants from Bener Meriah. There were 80 Actinomycetes isolates. Eight of the 21 isolates selected isolate were against Collecotrichum coffeanum with different inhibitory ratios from each isolate. There were 1PRG/RR/10-3/2-1, 2PRG/WP/10-4/1-1-1, 2PRG/AG/10-4/3-1-1, 1M/SR/10-3/2-1, 2M/SR/10-3/2-1, 1M/JAJ/10-3/2-1, 1B//KR/10-3/2, 2B/KR/10-4/1.