Mahatma Phule Agricultural University, Wheat Research Station, Niphad, District Nashik - 422 303, India.
Present Address: 1Department of Plant Pathology and Agricultural Microbiology, Mahatma Phule Krishi Vidyapeeth, Rahuri - 413 722, District Ahmednagar, (M.S.).
Leaf blight of wheat in Peninsular India, is mainly due to Helminthosporium sativum and Alternaria triticina and both are involved in leaf blight disease complex. Helminthosporium sativum isolates of wheat disease in Peninsular India were resistant to commonly used fungicide Dithane M-45 upto 0.2% concentration, whereas Alternaria triticina isolates showed resistant to Copperoxychloride upto 0.2% concentration. For effective and economically viable control of the leaf blight complex in wheat induced by H. sativum and A. triticina in Peninsular India, 2 sprays of Copperoxychloride + Mancozeb (Dithane M-45) @ 0.2% each at an interval of 15 days from disease initiation were found effective and recommended. However both the fungicides showed vice-versa control of H. sativum and A. triticina.
