Efficacy of newer insecticide molecules against sesame Jassid (Orosius albicinctus Distant) on sesame (Sesamum indicum, Linn.) oilseed crop

Abstract

A field experiment was carried out on efficacy of newer insecticide molecules against sesame jassid (Orosius albicinctus Distant) on sesame (Sesamum indicum, Linn.) varieties RT-351 during kharif season, 2017. The data revealed that newer insecticides viz., imidacloprid (0.005%) and thiamethoxam (0.025%) were proved most effective and superior over control in reduction of jassid population, followed by dimethoate (0.03%) and acephate (0.037%). The treatment spiromesifen (0.005%) and carbaryl (0.2%) were found least effective against the jassid. The highest seed yield of 7.25 q ha-1 was recorded in the plots treated with imidacloprid followed by thiamethoxam (7.15 q ha-1). The minimum seed yield (5.11 q ha-1) was obtained in the plots treated with spiromesifen (0.005%) followed by the treatment carbaryl (5.29 q ha-1). On the basis of economics, the highest B: C ratio (11.51:1) was recorded in the treatment of imidacloprid followed by dimethote (10.66:1), whereas, lowest B: C ratio (3.08:1) was recorded from plots treated with spiromesifen (0.005%).