Uji Efektivitas Jamur Trichoderma untuk Mengendalikan Penyakit Layu Fusarium (Fusarium oxysporum) pada Tomat (Solanum lycopersicum)

Abstract

HERNITA ADELINA SIRINGORINGO. Effectiveness Test of Trichoderma in Controlling Fusarium Wilt Disease (Fusarium oxysporum) in Tomatoes (Solanum lycopersicum) (Supervised by HASANUDDIN). Tomatoes are fruits that contain carotene and are a source of vitamin C. Currently, the production level of tomato plants is classified as low in both quantity and quality due to attacks by plant pests from insects and pathogens, which result in fruit rot, leaf spots, and fusarium wilt disease. Biological control using biological control agents is one of the control measures that needs to be developed, as it is relatively inexpensive and easy to implement, and is environmentally friendly. The fungus Trichoderma sp. is a type of fungus that can control Fusarium wilt disease. This study aims to determine the effectiveness of Trichoderma fungi as a biological agent against F. oxysporum which causes wilt disease in tomato plants. This study was conducted at the Greenhouse and Plant Disease Laboratory, Faculty of Agriculture, University of North Sumatra, Medan at an altitude of ± 32 meters above sea level from October 2024 to April 2025. This study used a completely randomized design (CRD) and a randomized block design (RBD), namely in vitro and in vivo testing on tomato plants. The in vitro test has 4 treatments, namely K: control, T1: Trichoderma isolate 1, T2: Trichoderma isolate 2, and F: benomyl fungicide. The in vivo test has 8 treatments, namely P0: control, P1: 25g Trichoderma isolate 1, P2: 50g Trichoderma isolate 1, P3: 75g Trichoderma isolate 1, P4: 25g Trichoderma isolate 2, P5: 50g Trichoderma isolate 2, P6: 75g Trichoderma isolate 2, and P7: benomyl fungicide. The results of the study showed that the application of Trichoderma can inhibit fungal growth in vitro and in vivo.