Daniel J. Collins, former Extension Plant Pathologist, Auburn University Diseases of Barley, Rye, and Triticale in Alabama Barley, rye, and triticale are cereal crops grown in Alabama either as a winter grain or as winter grazing. This publication summarizes the major diseases and control measures of these crops that are commonly found in the state. The fungus survives in crop stubble. Infections can occur anytime during a growing season.
Early infection causes the most damage, because both roots and culms are affected.
Infections when the plant is approaching maturity are usually confined to root tissue and cause only minor damage. Root infection is favored by cool, moist soil conditions. The most obvious symptom of take-all root rot is the development of white heads during the grain filling period. Infection usually attacks patches of plants that become stunted. Roots of affected plants are dark brown to black because of fungal invasion.