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The impact of eight IPM modules on whitefly Bemisia tabaci and its natural enemies were recorded during kharif 2016 and 2017, rabi-summer 2016-17 and 2017-18. There was a significant difference among the modules in the number of natural enemies per plant. In general, it was found that during rabi-summer the population of B. tabaci was higher than the kharif season on bitter gourd. When modules were compared for the population of B. tabaci, module 1 to 4 (sowing maize as a barrier crop, removal of infested leaves and residues from the appearance of pests, erection of solar light trap with yellow pan @ 5 traps/ha for trapping, tying yellow sticky trap to attract whiteflies, spraying neem oil @ 1% and pongam oil @1%) and module 6 (spraying of Metarhizium anisopliae (2 x 109), Beauveria bassiana (2 x 108), Neem oil 1% and Pongam oil 1%) which do not include frequent insecticidal applications recorded higher number of coccinellids, syrphids, hymenopterans and spiders than the IPM modules where frequent applications of chemical insecticides were included as a treatment. [ABSTRACT FROM AUTHOR]