Efficacy of newer insecticides against hadda beetle (Epilachna vigintioctopunctata Fab.) in spine gourd (Momordica dioica Roxb.)

Abstract

Field investigation were laid out to test the efficacy of newer insecticides against hadda beetle on spine gourd during kharif 2019-20, result revealed that emamectin benzoate + thiamethoxam 3.0% + 12.0%WG proved to be the best effective treatment with maximum reduction of (0.64 beetle/plant) pest population followed by spinosad 45%SC, emamectin benzoate 5%SG and chlorantraniliprole 18.5%SC with 0.76, 0.81 and 0.94 beetle/plant respectively, being statistically at par with each other, but significantly superior to rest of the treatments. The next level effective treatments novaluron + indoxacarb 0.25% + 4.5%SC (1.11 beetle/plant) and flubendamide 20%WG (1.24 beetle/plant) were being statistically at par with each other, but significantly superior over control (3.07 beetle/plant).