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sheath rot

A fungal disease caused by Acrocylindrium oryzae. Rotting occurs on the uppermost leaf sheaths enclosing the young panicles. The lesions start as oblong or somewhat irregular spots, 0.5-1.5 cm long, with brown margins and gray centers, or they may be grayish brown throughout. Powdery growths may be found inside affected sheaths.

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  • D.Herbert
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