Sunflower necrosis disease (SND), observed during 1997 in India has now become established in all major sunflower-growing states and has assumed the status of disease of national importance, thereby threathening sunflower cultivation in general. As it is a new disease, reliable resistance sources are still under investigation. A new insecticide thiomethoxam (Cruiser 70 W.S.) was tested for three years at Oilseeds Research Station, Latur (M.S.), India, to manage the necrosis disease in the current sunflower production. The three-year data (2006-2008) revealed that the sunflower necrosis disease can be managed by treating seeds with thiomethoxam at 4 g/kg along with two sprays of the chemical at 0.05% 30 & 45 DAS.