Studies on field efficacy of newer insecticides on population dynamics of major insect pests and mite infesting tomato crop

摘要

Bio-efficacy experiments on newer insecticides against insect pest of tomato were carried out by using seven different insecticides applied at different dose at 60 and 80 Days after planting. The bio efficacy of these insecticides were evaluated against major insect pests infesting tomato crop viz., tomato fruit borer, Helicoverpa armigera (Hubner), aphid, Aphis gossypii (Glover) and Myzus persica (Sulzer), leafminer, Liriomyza trifolii (Burgess), whitefly, Bemisia tabaci (Gennadius) and mite pest i.e. red spider mite, Tetranychus urticae (Koch). Based on the findings of the present study, it can be inferred that the newer insecticide Emamectin benzoate 1.9% EC @ 300 ml a.i./ha proved to be more effective against tomato fruit borer, whitefly and leaf miner. Other insecticides or mixtures of insecticides were moderately effective.