Diseases

Diagnostic Tool

RiceDoctor

Introduction to Sheath Blight

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Anamorph

Rhizoctonia solani Kühn

Teleomorph

Thanathephorus cucumeris (A. B. Frank) Donk

History

Sheath blight was first described in Japan by Miyake in 1910, but was first noted by Yano in 1901. Reinking (1918) and Paolo (1926) found a very similar disease in the Philippines. Park and Bertus (1932) reported the disease in Sri Lanka and Wei (1934) in China.

Distribution and Occurrence

Rice sheath blight is a ubiquitous disease of rice. It occurs throughout the rice-growing areas in temperate, subtropical, and tropical countries. It is found in diverse rice production systems, whether upland, rainfed, or irrigated.