Diseased hills are severely stunted with excessive tillering and a very upright growth habit
Diseased hills has a grassy and rosette appearance
Leaves short, narrow and yellowish green with numerous small rusty spots or patches, which form blotches
Retention of green coloration of the leaves after application of sufficient nitrogenous fertilizers
Infected plants usually survive until maturity but produce no panicles. Symptom develops 10-20 days after infection.