AbstractIn present studies, two insecticides Emamectin benzoate 5% SG and Chlorantraniliprole 18.6% SC as well as the botanical Nirgundi oil were tried in Diet bioassay. Results showed that 95.60% control was recorded in T3 (Emamectin benzoate 5 SG @ 11 g a.i./ha), which provided highest control amongst all treatments against H. armigera. Second highest control was obtained with observed with T2 (Chlorantraniliprole 200 SC @ 30 g a.i./ha) followed by T8 (Emamectin benzoate 5 SG @ 8.25 g a.i./ha + Nirgundi oil @ 6%) and T7 (Chlorantraniliprole 200 SC @ 22.5 g a.i./ha + Nirgundi oil @ 6%), being 95.30, 95.00 and 94.40% respectively. These results revealed that synergistic activity of insecticides and plant extract can reduce one fourth dose of recommendation by producing similar efficacy to the recommended dose. This study shows that employing plant extracts like Nirgundi oil may successfully control H. armigera.
Mankar et al. (Wed,) studied this question.