The studies were conducted to see the effectiveness of some new chemistry insecticides for controlling whitefly jassid and american and spotted bollworms on cotton variety NIAB-777, having twelve treatments for each sucking viz., Thiosulphon 35 EC, Black Warrant, Pyramid 10 SL, Steer Plus, Folettilla 75 EC, Comrade 25 WG, Asset 70 WDG, Tender 10 EC, Buster 70 SP, Sharp 20 SL, Smart 33 WDG and bollworms viz., Rubin 25 EC, Pronet 1.8 EC, Demand 2.5 EC, Smart 33 WG, Tender 10 EC, Sozo 40 EC, Prado 25 WP, Leopard 2.5 EC, Boxer 2.5 EC, Lorsban 40 EC, Alan Plus 3.5 EC, was sprayed in order to evaluate the efficacy of these insecticides including a control for both. Pest population was recorded 24 hours before and 24, 48, 72 hours and 7 days after insecticides application. On the basis of mean population of whitefly, jassid, American and spotted bollworms from each treated plot, the efficacy of insecticides was compared. During the applications, minimum and maximum populations were recorded. The data was subjected to standard technique of statistical analysis by using LSD test.

Careless and indiscriminate use of pesticides to control different pests has distressed the natural balance between pests and biological control agents, along with the difficulty of environmental pollution. In the present changing situation of the world, role of the biological control agents cannot be ignored. The potential role of biological control agents in IPM has attracted the concentration of scientists to discover and manipulate the natural enemies instead of conventional control methods, which are mainly dependent on chemical pesticides. Between different biological control agents, mites are well-recognized predators among which the genus Agistemus occupies a significant place.Agistemus mites (Stigmaeidae) are successful predators of destructive mites and other soft-bodied insects.They often establish on plants and can prey on different kinds of harmful mites.Stigmaeidae is a potential significant predatory mite group found throughout the world and among this group, same species might have a very important role in biological control of phytophagous mites and scale insects.