Pythium in turfgrass
From Wikipedia, the free encyclopedia
Pythium disease, also known as "Pythium blight," "cottony blight," or "grease spot," is a highly destructive turfgrass disease caused by several different Pythium species. All naturally cultivated cool-season turfgrasses are susceptible to Pythium and if conditions are favorable to Pythium it can destroy a whole turfgrass stand in a few days or less.[1] Pythium favors hot and very humid weather and will usually develop in low areas or swales in the turfgrass.