The term 'fairy ring' is used to describe a number of turf grass diseases where soil-borne fungi cause certain symptoms to develop on the surface of the sward. Fairy rings are caused by the activity of many fungi classified as basidiomycetes.
Fusarium Patch can be a devastating disease on fine turf surfaces as the patches may be many inches in diameter and adversely affect the playing surface as well as its aesthetic value.
Found on any area of turf, especially golf greens, tees, fairways, bowling greens, lawns, parkland and sports pitches. Red thread does not commonly affect the playing quality of the turf but reduces the aesthetic appearance.
Seedling diseases may be caused by many fungi including Microdochium nivale (Fr.) Samuels and I.C. Hallett, Fusarium spp. Drechslera spp., Bipolaris sorokiniana (Sacc.) Shoemaker, Rhizoctonia spp and Pythium spp.