ABSTRACT This aims of this study to obtain the best concentration of the local fungus B. bassiana to control S. frugiperda J.E. Smith maize pests in Laboratory. The research was conducted at the Laboratory of plants pest, Fakulty of Agriculture, Riau University, Bina Widya street km 12.5. Simpang Baru village, Tampan district. Pekanbaru. This research was conducted from July to September 2021.…