Chemical Management of Alternaria Leaf Blight of Cotton

Field experiment was conducted during kharif 2012 at Agricultural Research Station, Dharwad Farm for evaluation of different fungicides against Alternaria leaf blight of cotton. Fungicides viz., Hexaconazole (0.1%), Tebuconazole (0.1%), Propiconazole (0.1%), Difenconazole (0.1%), Penconazole (0.1%), Propineb (0.2%), Chlorothalonil (0.2%), Carbendazim (0.1%), Mancozeb (0.2%) were sprayed after initiation of disease infection, three sprays were taken with 20 days interval and pre cent disease index (PDI) was calculated after final spray. Propineb (0.2%) was effective in controlling disease with per cent disease control of 76.09 followed by Difenconazole @ 0.1% with 66.96 control.