Identifikasi Karakteristik Agens Hayati Aspergillus niger dan Uji Daya Hambat terhadap Perkembangan Penyakit Bercak Daun pada Kacang Tanah

Abstract

Aspergillus niger is a species of nematophagi whose existence is very widely available in nature which is commonly found in various habitats and soil types, both tropical and subtropical. Aspergillus niger can be an environmentally friendly alternative control, because it acts as an antagonistic fungus, one of which is in inhibiting the development of Cercospora arachidicola fungus that causes leaf spot disease. This study aims to determine the effect of biological agents Aspergillus niger in inhibiting the growth of leaf spot disease Cercospora arachidicola in vitro. This research was carried out from September 2022 to December 2022 at the Plant Protection Laboratory of Jember State Polytechnic using a non-factorial Complete Randomized Design (RAL). Treatments include: A0: 0% (aquades), A1: 10% (10 g/100 ml), A2: 15% (15 g/100 ml), A3: 20% (20 g/100 ml), A4: 25% (25 g/100 ml), A5: 30% (30 g/100 ml). Each treatment was repeated 3 times. The data was analyzed using Analysis of Variance (ANOVA), if the data differed markedly, then continued with the 5% BNT Test. The results of the study for the percentage of inhibition of each treatment were, A0 (0%) = 0%, A1 (10%) = 41,11%, A2 (15%) = 44,44%, A3 (20%) = 60,47%, A4 (25%) = 61,27%, A5 (30%) = 65,07%