BIOEFFICACY OF LAMBDA-CYHALOTHRIN 5 CS FORMULATION AGAINST PINK BOLLWORM, Pectinophora gossypiella (SAUNDERS) ON COTTON

摘要

The relative efficacy of X-cyhalothrin (Karate Zeon) 5 CS new formulation was evaluated against pinkboUworm @ 50,25,15 and 12.5 g a.L/ha along with Profenofos 50 EC @ 500 g a.i./ha and Thiodicarb 75 WP @ 750 g a.iyha. Among the evaluated doses of X-cyhalothrin 5 CS formulation, a dose of 50 g a.i/ha proved to be most effective in reducing pinkbollworm incidence in squares, flowers, green bolls, loculi, open bolls and locules and was statistically on par with X-cyhalothrin 5 CS new formualtion @ 25 ga.i./ha. The treatment with X-cyhalothrin 5 CS new formulation @ 25 g a.L/ha found significantly superior over conventional EC formulation of X-cyhalothrin @ 25 g a.L/ha by recording lower infestation of pink bollworm. The next best treatments in order of their effectiveness were thiodicarb 75 WP @ 750 g ai/ha, profenofos 50 EC @ 500 g a.i./ha, X-cyhalothrin 5 CS @ 15 and 12.5 g a.L/ha.