Alfalfa
Diseases in Ohio
Phytophthora
root rot
- Symptoms
- yellow, red or purple
discoloration of leaves
- stems may wilt or
remain upright
- dark brown to black
lesions on tap root that may girdle
- damping off of emerging
seedlings
- Environment
- low lying, poorly
drained areas
- Survival
- soilborne fungus
- swimming spores
begin infection
- Management
- Scouting
