MANAGEMNT OF SUCKING PESTS IN GROUNDNUT BY FOLIAR APPLICATION OF NEW INSECTICIDAL MOLECULES
Assistant Research Scientist, 2Associate Research Scientist, 'Assistant Research Scientist, 'Research Scientist, Main Oilseeds Research Station, Junagadh Agriculture University, Junagadh-362001
D. V. KHANPARA', G. M. PARMAR2, M. K. GHELANI' and K. L. DOBARIYAI
Field experiments were conducted to study the effect of certain insecticides against jassids, Empoasca kerri (Pruthi) and thrips, Scritothrips dorsalis (Lindinan) in groundnut at the Main Oilseeds Research Station, Junagadh during the summer seasons of 2011-13. Considering the efficacy and the cost benefit ratio, imidacloprid 200 SL 125 ml/ha, acephate 75 SP 500 gm/ha, dimethoate 30 EC 1000 ml/ha and thiamethoxam 25 WG 200 g/ha were most effective against the jassids and thrips population infesting groundnut crop. While, carbosulfan 25 EC 2000 ml/ha and triazophos 40 EC 1000 ml/ha ha were moderatively effective against jassids and thrips. Acetamiprid 20 SP 100 g/ha and fipronil 80 WG 100 g/ha were noticed to be ineffective in checking the incidence of jassids and thrips. The highest pod yield (2554 kg/ha) with maximum ICBR (1:12.12) was recorded in the treatment of imidacloprid 200 SL 125 ml/ha.
Key words: Scritothrips dorsalis, Empoasca kerri, Imidacloprid, Thiamethoxam, Groundnut