Pythium blight Pythium blight Foliar blight is one phase of disease caused by Pythium spp. Pythium spp. also causes seedling blight and root rot Pythium blight Conditions: Hosts:
Day time temperatures >32 oC (90 oF) Night temperatures >20 oC (72 oF) Rainy, humid (>90% RH) weather Hosts: All cool season turf grasses Pythium blight Watersoaked, dark spots Pythium blight Light to reddish brown as turf dries Pythium blight Pattern reflecting mowing when wet Pythium blight Pythium blight or brown patch?
In creeping bentgrass green Pythium blight or brown patch? Matted grass with fishy odor and greasy feel (grease spot)
Pythium blight Matted grass with fishy odor and greasy feel (grease spot) Cottony mycelium (cottony blight)
Pythium blight Cottony mycelium (cottony blight) Pythium blight Control strategies Reduced leaf moisture Thatch removal
- Improved soil drainage - Infrequent irrigation in early morning Thatch removal Balanced fertilization Preventative fungicides