Disease can infect paddy at all growth stages and all aerial parts of plant (Leaf, neck and node).Among the three i.e. Leaf, neck and node, leaves and neck infections are more severe. Small specks originate on leaves - subsequently enlarge into spindle shaped spots(0.5 to 1.5cm length, 0.3 to 0.5cm width) with ashy center. Several spots coalesce resulting in big irregular patches.