Bio-efficacy of Beauveria Bassiana (Balsamo) vuillemin against Helicoverpa armigera (hübner) and Spodoptera litura (Fabricius) in groundnut under laboratory condition

A laboratory experiment was conducted to determine the bio-efficacy of B. bassiana alone and in combination with different insecticides against Helicoverpa armigera (Hubner) and Spodoptera litura (Fabricius) in groundnut under laboratory condition at bio-control laboratory, Department of Entomology, College of Agriculture, Junagadh Agricultural University, Junagadh during Kharif season of 2018. The results indicated that the highest mortality of H. armigera was achieved in treatment of chlorantraniliprole 18.5 SC 0.006% as they registered 100% mortality at five days after treatment, whereas B. bassiana 1.15 WP 0.003% + chlorantraniliprole 18.5 SC 0.003% (97.33%) and novaluron 10 EC 0.01% (96.33) were found next best treatments. While in case of S. litura the highest mortality was recorded in the treatment of chlorantraniliprole 18.5 SC 0.006% as they registered 100% mortality at five days after treatment, whereas novaluron 10 EC 0.01% (97.33%) and B. bassiana 1.15 WP 0.003% + chlorantraniliprole 18.5 SC 0.003% were found next best treatments.