ELFINA, ELFINA (2025) EFEKTIVITAS Trichoderma spp. DALAM MENGHAMBAT Colletotrichum sp. PENYEBAB BUSUK BUAH KOPI SECARA IN VITRO. S1 thesis, Universitas Malikussaleh.

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Abstract

Fruit rot disease in coffee caused by Colletotrichum sp. is one of the major constraints in coffee cultivation as it reduces both the quality and quantity of yields. Continuous use of synthetic fungicides has negative impacts on the environment and human health. Therefore, this study aimed to evaluate the effectiveness of several Trichoderma spp. isolates as biological control agents in inhibiting the growth of Colletotrichum sp. in vitro. The Trichoderma spp. isolates were obtained from the rhizosphere soil of coffee plant roots in two highland areas of Gayo, namely Ratawali and Tawardi villages. Antagonistic assays were conducted using the dual culture method on PDA media with 13 isolates and 3 replications. The results showed that all Trichoderma spp. isolates were capable of inhibiting Colletotrichum sp. growth in vitro, with varying levels of inhibition. The G2DTLD isolate exhibited the highest inhibition rate at (84,31%) on the 7th day, followed by G3DRLD (81,20%) and G3DTLD (80,83%). The observed mechanisms of inhibition included competition for space and nutrients, mycoparasitism, and antibiosis. These findings indicate that Trichoderma spp. have strong potential as effective and environmentally friendly biological control agents against coffee fruit rot disease. Keywords: Antagonisme, biological control, Colletotrichum sp., coffee, Trichoderma spp.,

Item Type:	Thesis (S1)
Subjects:	S Agriculture > S Agriculture (General)
Divisions:	Fakultas Pertanian > 54211 - Jurusan Agroekoteknologi
Depositing User:	Elfina Elfina
Date Deposited:	16 Sep 2025 03:39
Last Modified:	16 Sep 2025 03:39
URI:	https://rama.unimal.ac.id/id/eprint/15461

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