Journal of Entomological Research

three different IPM modules were developed and compared with tNAU module and farmer's adoptive module. Among the IPM modules tested suggestive module (sM) 3 included the following IPM components viz., basal application of FYM 12.5 t/ha and neem cake 2.5 t/ha, seed treatment with imidacloprid 70 ws at 10 g/kg seed, soil drenching of neem oil 1% on 30 DAs (days after sowing), growing okra as trap crop and cowpea as inter crop (8:2) (cotton: intercrop), use of Chrysoperla carnea stephens grubs @ 10000/ha on 45 DAs, Cryptolaemus montrouzieri Mulsant adults @ 1000/ha on 75 DAS, fish oil rosin soap (fors) 25 g/l at 40 and 60 DAs and imidacloprid 17.8 sL at 0.4 ml/l on 105 DAs and chlorpyriphos 20 EC at 4 ml/l on 135 DAs, resulted in minimum mealy bug population of 1.5 crawlers/adults per 5 cm apical shoot on cotton plants with 94.4 per cent population reduction. Besides, sM 3 documented maximum number of predatory population of coccinellids (5.4/plant), chrysopids (5.1/plant), spiders (4.3/plant), maximum yield (14.22 q/ha) and cost benefit ratio (1:2.5).