Soybean
Diseases in Ohio
Phytophthora
damping off, root and stem rot
- Symptoms
- uneven height in
plants, holes in fields - replant problems
- rapid yellowing
and wilting, soft rot and collapse of root system on younger plants
- older plants show
yellowing of lower leaves that moves up the plant followed by wilting
with a chocolate brown stem canker developing from soil line up the plant
- Environment
- poorly drained soils
with a high clay content favor this disease
- swimming spores
form in saturated soils
- Survival
- oospores can move
with soil
- Management
- plant varieties
with resistance genes
(Rps)plus high levels of partial resistance
- Improve drainage
through tiling and or tillage
- seed
treatment
- Scouting
