Efficacy of insecticides against Scirpophaga incertulas (Walker) on Basmati Rice

Out of seven tested insecticides, the plot treated with fipronil 5SC @ 50g a.i.ha−1 proved their superiority over other insecticides, which resulted the lowest incidence of yellow stem borer with highest grain yield followed by cartap hydrochloride 50SP @ 300g a.i.ha−1 and cartap hydrochloride 4G @ 750g a.i.ha−1. However, remaining insecticides were also found significantly superior over the control (check). Based on economics of the insecticides, cartap hydrochloride 50SP proved most economical than others with highest cost: benefit ratio (1:8.97) followed by fipronil 5SC (1:6.22) and cartap hydrochloride 4G (1:5.54) against lowest in indoxacarb 14.5 SC @ 75g a.i.ha −1 (1:2.89).