Giraddi, R SDhana Raj, B2019-10-212019-10-212000No . of references 144http://krishikosh.egranth.ac.in/handle/1/5810132278Seasonal abundance studies indfcated that maximum population (24.18) larvae/plant) of diamondback moth (DBM), Plutella xylostella (L.) was noticed during third week of January in rabi season and it was lowest (0.13 larvae/plant) during third week of April to first week of May in summer season. Minimum population (0.15) of tobacco caterpillar. Spodoptera litura Fab. was noticed during third week of November and attained peak (12.05) in the same season (rabi) between first week to third week of January. Whereas the peak population (6.95) of cabbage leaf Webber, Croddolomia binotalis Zell, was observed in first week of September in kharif and lowest population (0.45) was observed in first week of May in summer season. While, maximum population (10.69) of cabbage head borer, Hellula undalis (Fab.) was noticed during third week of April in summer season and lowest population (0.01) was observed during first week of August in kharif. Among the new insecticides tested in field, spinosad @ 0.048%, fipronil @ 0.005%, lufenuron @ 0.005%, novaluron @ 0.01%, fiufenoxuron @ 0.01% and thiodicarb @ 0.15% in that order proved significantly superior in reducing the larvae of P. xylstella, S. litura, C. binotalis throughout the crop period. However, lufenuron, novaluron, spinosad, fiufenoxuron and carbosuifan @ 0.025% proved superior in that order against cabbage head borer. With respect to ovidical toxicity all the tested new chemicals except fipronil exhibited good ovicidal action against 0-24, 24-48 and 48-72 hrs old eggs of P. xylostelia, S. litura, C. binotalis and H. undalis. Of the modules of IPM evaluated, adoptable module with mustard trap crop was found to be the best in reducing the pest load on cabbage crop, increasing the yield tremendously compared to biointensive module and RPP. Mustard plants effectively trapped P. xylostelia, C. binotalis and H. undalis population. This module also recorded higher benefit cost ratio of 4.17 over RPP.ennullThesis