Evaluation of bio-pesticides and chemicals against brinjal shoot and fruit borer, Leucinodes orbonalis Guenee

Abstract

The field experiment was conducted at K.N.K, College of Horticulture, Mandsaur (M.P.) to study the efficacy of certain bio-pesticides and chemicals against brinjal shoot and fruit bore, Leucinodes orbonalis Guenee in Mandsaur District of Madhya Pradesh during rabi season of 2022-23 and 2023-24. Emamectin benzoate 3% + thiamethoxam 12% @ 150 g ha-1 was the most effective in recording the minimum fruit infestation of (3.87%) and found at par with thiamethoxam 12.6% + lambda cyhalothrin 9.5% @ 125 ml ha-1(5.81%) followed by Spinosad 45% SC @185 ml ha-1(9.57%), Neem extract 3% @ 2500 ml ha-1(10.06%), Brahmastra (Natural) @ 25 L ha-1 (10.95%), Neemastra (Natural) @ 25 L ha-1 (11.28%), Agniastra (Natural) @ 12.5 L ha-1 (12.38 %), Beauveria bassiana 1.15% WP @ 2500 g ha-1(12.50%) and Metarhizium anisopliae 1.15% WP @ 2500 ml ha-1(13.25%). The maximum fruit yield (257.00 q/ha), highest net profit (Rs. 372732.4 ha-1) and highest cost benefit ratio (1:5.80) was recorded with the application of emamectin benzoate 3% + thiamethoxam 12%. Other treatments gave yield ranging from 202.80-85.57 q/ha with comparatively economics.