Karakteristik Trichoderma harzianum Asal Tanah Latosol dan Sifat Antagonisnya Terhadap Penyakit Busuk Batang Kacang Tanah

Abstract

Sclerotium rolfsii is a soil infectious pathogen that causes stem rot disease that can attack various types of plants. Biocontrol can be a solution, namely by utilizing microbes that are antagonistic to Sclerotium rolfsii fungi. One antagonistic fungus that can be used is Trichoderma harzianum. This study aims to determine the antagonistic nature of Trichoderma harzianum against Sclerotium rolfsii in vitro. The implementation of this research was from September 2022 to December 2022 at the Plant Protection Laboratory of the Jember State Polytechnic using a non-factorial Complete Randomized Design (CRD). Treatment includes: T0: 0 %(Aquades), T1: 5% (5 g/100 ml), T2: 10% (10 g/100 ml), T3:15% (15 g/100 ml), T4: 20% (20 g/100 ml), T5: 25% (25 g/100 ml). Each treatment was repeated 3 times. Furthermore, the data were analyzed using anova, if it was significantly different, it was followed by a 5% LSD Test. The results showed that Trichoderma harzianum was able to inhibit the growth of pathogenic fungi Sclerotium rolfsii in vitro. Based on the results of the study, the percentage of inhibitory power in each treatment is, T0 = 0%, T1 = 47.00%, T2 = 48.00%, T3 = 52.00%, T4 = 68,00%, T5 = 70,00%.