Effect of Common Insecticides on Emergence and Parasitism of Trichogramma chilonis Ishii (Hymenoptera: Trichogrammatidae)


  • Central Institute for Cotton Research, Nagpur, Maharashtra, 440 010, India


Four insecticides commonly used in the management of cotton pests were field tested for their deleterious effects on an effective egg-parasitoid, Trichogramma chilonis Ishii. Endosulfan (0.05%) proved to be safer than quinalphos (0.05%), monocrotophos (0.04%) and fenvalerate (0.04%). Both, the emergence and parasitism of T. chilonis decreased gradually as the time increased from 12 to 72h in all treatments including control.


Cotton, Corcyra cephalonica, Helicoverpa armigera, Insecticides, Trichogramma chilonis.

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