Field experiment was conducted for management of Alternaria Leaf Spot disease of sunflower during two consecutive spring season of 2014 and 2015 in experimental farm of Dholi Kothi Farm situated at Tirhut College of Agriculture, Dholi, Muzaffarpur, Bihar. All the six treatments tested were significantly effective in reducing the severity of Alternaria leaf spot of Sunflower in comparison to control. Maximum per cent seed germination (95.5%), lowest PDI of Alternaria leaf spot (7.5%), maximum seed yield (1254 q/h) and maximum per cent increase in grain yield (29.2%) were recorded in seed priming with Carbendazim @ 2g/kg + Thiamethoxam @4 g/kg) + foliar spray of Propiconazole @ 0.1% + Thiamethoxam @ 0.4%) after disease appearance and second 15 days later while maximum per cent disease severity (26.5%) and lowest seed yield (887 kg/h) were recorded in control. Next superior treatment was seed priming with Carbendazim @ 2g/kg seeds + Thiamethoxam @4 g/kg seeds + foliar spray of Propiconazole @ 0.1% + Azadirachtin @ 0.15% where seed germination (92.0%), per cent disease severity (8.8%), seed yield (1232 kg/h) and per cent increase in grain yield (28. 0%) were observed which was at par with each other.

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