Management of American serpentine leaf miner through newer combination of insecticides on Tomato crop

Result revealed that among all the insecticides alone and their mixtures after first spraying of Propargite + Bifenthrin 50 + 5 SE @ 621 + 62.1 a.i./ha was found to be the most effective in both the sprays with a maximum reduction in maggots population (69.26/10 leaves), and Propargite 57 EC @ 627 a.i/ha was minimum reduction in maggots population (9.43) than the maggot population in untreated control (26.30/10 leaves) while after second spraying of Propargite + Bifenthrin 50 + 5 SE @ 621 + 62.1 a.i./ha was found to be the most effective one with a maximum reduction in maggots population of Liriomyza trifolii (3.25/10 leaves), and Propargite 57 EC @ 627 a.i./ha was minimum reduction in maggots population of Liriomyza trifolii population (15.87/10 leaves), than the control (29.86/10 leaves). The results reflected in terms of increase average means over control than after Propargite 50 + Bifenthrin 5 SE @ 594 + 59.4 a.i./ha plot gave maximum increased fruit yield 72.56% while lambda cyhalothrin-5 EC @ 25 ml a.i./ha showed 41.17% with minimum increase in fruit yield over the control. The highest cost benefit ratio was obtained from Propargite 50 + Bifenthrin 5 SE @ 594 + 59.4 g a.i./ha (1: 21.24) by novel combination of insecticide.