Evaluation of Granular Insecticides Against Rice Yellow Stem Borer, Scirpophaga incertulas (Walker).

The field experiment was carried out during kharif 2011–12 at experimental farm College of Agriculture, Kolhapur, to evaluate the efficacy of granular insecticides, viz., cartap hydrochloride 4G, fipronil 0.3G, ferterra 0.4G carbofuran 3G, lasenta 80 WG, Phorate 10G, and chlorpyriphos 10G against yellow stem borer, Scirpophaga incertulas infesting rice. Among the evaluated granular insecticide molecules lasenta 80 WG @ 250 g a.i./ha proved to be most effective against S. incertulas by recording lowest dead hearts 3.17 per cent after first application and 5.12 per cent after second application. This treatment ultimately recorded highest of 43.30 q/ha yield of rice. The next best treatment in order of their effectiveness were ferterra 0.4 G @ 30 g a.i./ha, fipronil 0.3G @ 7.5 g a.i./ha, cartap hydrochloride 4 G @ 750 g a.i./ha, chlorpyriphos 10 G @ 1 kg a.i./ha, carbofuran 10 G @ 750 g a.i./ha and phorate 10 G 750 g a.i./ha.