T. VENKATRAMANA REDDY*, K.V. HARI PRASAD, M.S.V. CHALAM and K. VISWANATH Department of Entomology,S.V. Agricultural College, ANGRAU, Tirupati-517502, Chittoor Dt., A.P, India

ABSTRACT

A field experiment was carried out during Kharif 2018 at dry land farm, S.V. Agricultural College, Tirupati to assess theefficacy of certain insecticides against leafhopper (Orosius albicintus) of sesame. Results on efficacy of certain insecticides against leafhopper, O. albicinctus at 3 DAS revealed that the chemical treatment with pymetrozine @ 0.4 g L-1 showed highest per cent reduction of nymphal population (91.5%) followed by imidacloprid (40 %) + ethiprole (40 %) @ 0.3 g L-1 (73.7 %), acephate@ 1.5 g L-1 (73.1%), dinotefuron @ 0.3 g L-1 (72.1%), diafenthiuron @ 1.3 g L-1 (70.6%), The lowest per cent reduction was recorded in flonicamid @ 0.4 g L-1 (69.3%), thiamethoxam (seed treatment) (25.6 %), imidacloprid (seed treatment) (12.7 %).

KEYWORDS:

Sesamum,leafhopper, efficacy and insecticides