The application local Beauveria bassiana Balls (Vuill.) flour formulation with bran flour carrier against Spodoptera frugiperda J.E Smith larvae in laboratory

Abstract

Maize is a food crop that has high economic value in Indonesia. Pest attacks on maize are an obstacle in the cultivation of maize. Spodoptera frugiperda J.E Smith is a maize pest that can cause a 100% reduction in yield. Control using the local entomopathogenic fungi Beauveria bassiana is an effort to control S. frugiperda using environmentally friendly materials. Local B. bassiana can be made in the form of a flour formulation by adding a carrier material, namely bran flour. The purpose of this study was to obtain the best addition of bran flour to the local B. bassiana flour formulation on the mortality of corn plant pest S. frugiperda in the laboratory. The research was conducted using a completely randomized design consisting of five treatments and four replications. The treatment given was the addition of bran flour to 30 g of local B. bassiana flour formulation, namely 0 g, 0.45 g, 0.60 g, 0.75 g, 0.90 g. The results showed that the application of 30 g of local B. bassiana flour formulation with the addition of 0.90 g of bran flour was the best addition of bran flour to control S. frugiperda larvae by causing total mortality of 80%, early time or death of 42.25 hours after application, and Lethal Time 50 117 hours after application.