- Rice blast is one of the most destructive diseases of rice.
- A leaf blast infection can kill seedlings or plants up to the tillering stage.
- At later growth stages, a severe leaf blast infection reduces leaf area for grain fill, reducing grain yield.
- Initial symptoms appear as white to gray-green lesions or spots, with dark green borders.
- Older lesions on the leaves are elliptical or spindle-shaped and whitish to gray centers with red to brownish or necrotic border.
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