- Rice blast is one of the most destructive diseases of rice. Because neck and node blast affects the panicle directly, yield losses in affected plants are very high.
- Node infection occurs in a banded pattern.
- Lesions on the node are blackish to grayish brown.
- Infected nodes can cause the culm or the part of the plant that holds the panicle to break.
- Lesions on the neck are grayish brown and can cause girdling, making the neck and the panicle fall over.
- If the infection of the neck occurs before the milky stage, no grain is formed, but if infection occurs later, poor quality grains are formed.
- Neck and node blast can also cause whiteheads or white panicles, similar to stem borer infection.
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