Soybean Diseases in Ohio

Frogeye leaf spot

Cercospora sojina

• Symptoms
  • lesions on upper leaf surfaces begin as water-soaked spots, develop into lesions with gray or light tan centers with reddish brown borders
  • appear late in the season
• Environment
  • warm, humid weather
• Survival
  • survives in soybean residue
  • seedborne
• Management
  • select resistant varieties
  • plant high quality treated seed
  • crop rotation