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Period of occurrence of Sheath rot disease: The disease is important during the heading towards the maturity stages of the rice crop. It usually attacks the uppermost leaf sheath that encloses the panicles and causes rotting of the panicles.
Conditions favourable for Sheath rot disease: High amount of nitrogen, high relative humidity, and dense crop growth favours sheath rot development. The fungus grows best at 20 to 28°C.
Host pants of Sheath rot disease: The disease is host to Oryza sativa L. Its alternate host includes maize, pearl millet, sorghum, Echinochloa colona (L.) Link (jungle grass), Eleusine indica (L.) Gaertn. (goosegrass), Leptochloa chinensis (L.) Nees (red sprangletop), Oryza rufipogon (red rice) and Zizania aquatica (annual wild rice).