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Disease cycle of ergot of grains caused by Claviceps purpurea.
Fusarium head blight (scab)
C10.7. Major outbreaks of Fusarium head blight (red) on wheat and barley in the United States from 1991 through 1996.
Corn smut caused by Ustilago maydis
Stinking smut (bunt) (Tilletia species)
Gray mold, the "noble rot," caused by Botrytis cinerea