T. NARESH*, P. RAJASEKHAR, K.V. HARI PRASAD, V.L.N REDDY, B. RAVINDRA REDDY AND N.C. VENKATESWARLU
Department of Entomology, S.V. Agricultural College, ANGRAU, Tirupati – 517502, Andhra Pradesh
Role of synergist for countering the insecticide resistance mechanism was studied in both baseline and field populations during rabi 2018-19 at Insectary, Department of Entomology, S.V. Agricultural College, Tirupati. Higher per cent mortality was observed in larvae treated with insecticide + synergist against insecticide alone. Mean per cent mortality of insecticide + synergist and insecticide alone significantly differed. The highest percent mortality was observed with chlorantraniliprole alone and along with synergist followed by spinosad, thiodicarb, dichlorvos and chlorpyriphos alone and along with synergist respectively. In baseline population, the highest percent mortality was observed in insecticide and insecticide along with synergist followed by Prakasam, Nellore, Chittoor, Kurnool and Guntur districts larval population.
Maruca vitrata, chlorantraniliprole, spinosad, thiodicarb, dichlorvos, chlorpyriphos, PBO (Pyperonyl butoxide), sesamin.