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Causal organism - Rhizoctonia solani
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The disease is soil-borne. The fungus is very common in soils and can survive between susceptible crops as mycelium. on dead tissues and other hosts.
Importance
The disease is erratic in occurrence and frequently more severe where crops have been established by direct drilling or minimum cultivations . Individual crops may suffer significant losses but in general wheat is not seriously affected. Losses in barley can be much more significant.
