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Description and Symptoms
Infected plants appear stunted, have smaller root systems, and exhibit decay in the crown area.
Commonly, tillering is reduced regardless of degree of infection.
Part or all of the sub-crown internode, lower nodes, crown, and roots of an infected plant usually turn brown or reddish brown.
Brown coloring sometimes extends up the stem for a few internodes.
Small oval brown lesions may occur on the roots and sub-crown area.
Inoculum persists on cereal and grass hosts, in crop debris and in the soil. Some fungi can exist for months in the soil without a host.
Integrated Management
Rotate out of wheat or barley for one year to reduce fungal inoculum levels in the soil. Oats or broad leaf crops are suitable rotation crops.
Plant resistant cultivars when available.
Avoid soil compaction and provide good soil tilth to limit seedling stress.
Plant early at a proper seeding depth to permit uniform germination and emergence under cooler soil temperatures, which delay common root rot infections.
Maintain adequate nitrogen and phosphorus levels to encourage vigorous root and shoot growth, enabling plants to resist or tolerate infection.
Avoid plant moisture stress through accurate irrigation management.
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