Bio-efficacy of Solvent Extracts of Botanicals against Brinjal Shoot and Fruit Borer, Leucinodes orbonalis (Guenee) under in vitro Condition

Abstract

This study evaluated the effectiveness of solvent extracts of A. indica, C. inerme, and O. sanctum against Leucinodes orbonalis, a borer of brinjal shoots and fruit. The room temperature solvent extraction method was used to get the acetone, petroleum ether, and methanol extracts of the botanicals, A. indica 100% (76.54%) methanol extract had the highest antifeedant efficacy. The acetone and petroleum ether extracts of A. indica 100% (65.45%; 60.42%) and C. inerme 100% (57.25%; 51.78%) were also effective antifeedants. The per cent larval mortality of L. orbonalis was highest in the methanol, acetone and petroleum ether extracts of A. indica 100% (89.33%; 80%; 71.33%), A. indica 75% (76.67%; 70%; 67%) and A. indica 50% (68.67%; 63.67%;58.67%), respectively.