Vol. 12, Special Issue 12 (2023)

Author(s):
Narayankar Abhijit Bhagwan, BD Shinde, SK Mehendale, SV Sawardekar, MS Joshi and V.N. Jalgaonkar

Abstract:
The experiment was conducted at Biological Control Laboratory, Department of Agricultural Entomology, College of Agriculture, Dapoli. Dist. Ratnagiri (Maharashtra). EPF and insecticide combinations were found to be compatible at one-fourth of the recommended dose, whereas they were incompatible when concentration was increased to the recommended dose. Imidacloprid at ¼ RD showed a highly compatible nature with maximum radial growth of 67.98 mm in the treatment combination of Imidacloprid @ 0.0075 ml + M. anisopliae with an inhibition of 9.36 percent. This is followed by Imidacloprid @ 0.0075 ml + B. bassiana with a radial growth of 80.61 mm and a radial growth inhibition of 10.43 percent over the control. Insecticides and fungal biocontrol agents work together to increase the effectiveness of the control, allowing for lower insecticide dosages. Imidacloprid 17.8% SL @ 0.3 ml/l was found to be most effective, with 88.01 percent of P. nigronervosa mortality. Compatible treatment combination Imidacloprid 17.8% SL + B. bassiana 1x10⁸ cfu/ml @ 0.075 ml + 4 g/l was found to be most effective, with 73.97 percent of P. nigronervosa mortality.