IMPACT OF NEW GENERATION INSECTIC DES ON THE PUPAE OF TRICHOGRAMMA JAPONICUM (HYMENOPTERA : TRICHOGRAMMATIDAE)
S. UMA *
CENTRAL INTEGRATED PEST MANAGEMENT CENTRE DIRECTORATE OF PLANT PROTECTION, QUARANTINE & STORAGE. ERNAKULAM-682 037, INDIA
A.K. BOHRIA *
CENTRAL INTEGRATED PEST MANAGEMENT CENTRE DIRECTORATE OF PLANT PROTECTION, QUARANTINE & STORAGE. ERNAKULAM-682 037, INDIA
*Author to whom correspondence should be addressed.
Abstract
Integrated pest management has been the cardinal strategy for plant protection since decades. Ever since efforts were made for holistic approach by integrating chemical and biological means for pest management, the biological tactics using egg parasitoid Trichogramma sp. against lepidopterous pests have given promising results. Chemicals especially new generation ones are gaining wide acceptance among the farming community due to their unique mode of action and Safety to natural enemies. In the present study, impact of new era chemicals have been evaluated against pupal stage of Trichogramma japonicum adopting insecticide dip method of bioassay technique as standardised by IOBC (International Organization for Biological Control of crop pests and Weeds). The periodic observations recorded for adult emergence showed that chlorant raniliprole 18.5% SC was harmless with a minimum reduction of adult emergence (5.55%) which was followed by flubendiamide 39.35% SC (13.50%) and buprofezin 25% SC (23.75%). Spinosad 2.5% SC and thiamethoxam 25% WG were slightly harmful with 38.88% and 50.92% reduction in adult emergence.
Keywords: Parasitoid, Parasitism viability, Safety scale, Trichogramma, Insecticides