author(s)
V Amsagowri and N Muthukrishnan

abstract
A field experiment was carried out to evaluate the sulfoxaflor 3.75 + chlorpyriphos 37.5 SE mixtures with other insecticides, fungicides and urea against S. incertulas against yellow stem borer [Scirpophaga incertulas (Walker)] in rice during 2012 and 2013 at Agricultural College and Research Institute, Madurai. All the twelve treatments were found significantly superior over control in reducing the infestation of yellow stem borer. Among the treatments, sulfoxaflor 3.75 + chlorpyriphos 37.5 SE 619 g a.i./ha in combination with quinalphos 25 EC 375 g (5.6% and 3.4% with reduction of 83.8 and 84.3%) combinations were superior and effective in reducing the per cent dead heart and white ear damage respectively, followed by sulfoxaflor 3.75 + chlorpyriphos 36.5 SE 619 g + thiamethoxam 25 g a.i./ha (5.2% and 3.2% with reduction of 85.5% and 85%) and sulfoxaflor 3.75 + chlorpyriphos 37.5 SE 619 g + monocrotophos 36 WSL 360 g a.i./ha (5.3% and 3.1% with reduction of 84.4% and 85%) were effective in reducing the per cent dead heart and white ear damage respectively. A pre-mixture of sulfoxaflor 3.75 + chlorpyriphos 37.5 SE is compatibility with quinalphos 25 EC, monocrotophos 36 WSL, thiamethoxam 25 WG, carbendazim 50 WP, tricyclazole 75 WP and urea. All the combinational treatments did not show any phytoxicity symptoms on rice plants.