Indian Journal of Plant Protection

Leaf blight caused by Alternaria helianthi (Hansf) Tubaki & Nishihara, is the major disease of sunflower affecting the successful cultivation across India. Three fungicides, namely SAAF, Mancozeb and Propiconazole in five different treatment combinations as spray and as seed treatment were evaluated against Alternaria leafblight of sunflower at Regional Agricultural Research Station, Nandyal under All India Coordianated Research Project on Sunflower scheme. This experiment was carried out for three years i.e., 2009, 2011 and 2012 during Kharif season. During 2009, the experimental results revealed that combination of seed treatment with SAAF@3g/kg of seed + Mancozeb75%WP@0.2% at 30 and 45 days after sowing recorded least per cent disease intensity with highest yield. During 2011, 2012 the results showed that combination of seed treatment with SAAF3g/kg + Propiconazole @0.1% has given highest seed yield with least percent disease intensity. Pooled analysis of three years data revealed that combination of SAAF@3g/kg seed and propiconazole @0.1% has recorded least percent disease intensity and highest seed yield among all treatments.