Effectiveness of different fungicides against late blight (Phytophthora infestans) of potato

An investigation was carried out at Potato Research Station Sialkot during 2014-15 and 2015-16 crop season to find out suitable fungicides to combat the late blight disease of potato. Six fungicides viz. Ridomil Gold, Defeater, Puslan, Success, Aleitte and Dithane M-45 were tested against the disease in two consecutive seasons. All the fungicides reduced the late blight disease incidence of potato over control. Among the fungicides, alternate spray of Ridomil Gold and Dithane M-45 was found highly effective to minimize the late blight and to increase the yield of potato.