Wheat Diseases in Ohio

Stagonospora blotch

• Symptoms
  • lens shaped chocolate brown leaf lesions with yellow borders
  • brown to tan blotches on upper half of glumes
• Environment
  • wet weather from mid May through June
  • 68-80°F
  • rain 3-4 days each week
• Survival
  • overwinters on residues and on seed
  • rain splashed onto leaves and glumes
• Management
  • seed treatment
  • plant less susceptible varieties
  • crop rotation
  • balanced fertility
  • fungicide timing and efficacy
• Scouting