Wheat Diseases in Ohio

Black Chaff

• Symptoms
  • brown-black streaks or blotches on upper half of glumes
  • dark brown streaks on leaves
• Environment
  • moist, mild weather during flag leaf emergence through grain fill
• Survival
  • bacterium survives on residues, in soil and on seed
  • spread by splashing rain, wind and plant-to-plant contact
• Management
  • none available