Soybean Diseases in Ohio

Sudden death syndrome

• Symptoms
  • begin as small pale green to yellow circular leaf spots
  • brown to tan areas develop between the veins
  • pith is white
  • root decay and discoloration of roots and crown
• Environment
  • high soil moisture during late vegetative growth stages
  • SCN can increase severity of foliar symptoms
• Survival
  • fungal spores overwinter and survive for years in the soil
  • spores have been found on the cysts of SCN
• Management
  • reduce SCN populations
  • increase soil drainage by tiling or tillage
  • long crop rotations - soybeans only once every three years