Parasitization of Helicoverpa armigera (Hubner) in non Bt-cotton.

摘要

The larvae of H. armigera collected from field were parasitized by Eriborus spp., Bracon spp., Apanteles spp., C. chlorideae, Tachinid fly and infection of HaNPV and Bt was also observed. Among them, Eriborus spp. were found effective parasitoid. However, the results on mortality of H. armigera pre-pupae larvae showed the parasitization almost same due to Tachinid fly as well as infection of HaNPV and Bt. The highest mortality in pre-pupae larvae was noticed in the treatment of NSe 5% followed by spinosad (43.00 per cent).