Typhula blight is most notably found in the turf industry, affecting a wide range of turfgrasses.
[2] Typhula blight is commonly controlled with fungicide applications in the late fall and by other cultural practices.
After the snow has melted, gray to grayish white patches of mycelium, six to twelve inches in diameter, can be found.
[1] Within the patches, diseased grass blades often reveal either rusty or reddish brown colored sclerotia up to five millimeters in diameter.
[2] Unlike most plant pathogens, Typhula blight's dormant stage occurs in the warm conditions of the summer months as sclerotia, a hard survival structure.
[4] Upon favorable conditions of cold, wet weather, the sclerotia germinates grayish white spore-bearing bodies called basidiocarps to produce hyphae with clamp connections.
[4][5] Typhula blight is commonly found in United States in the Great Lakes region[2] and anywhere where cold winter temperatures and snow fall persist.
The disease is usually dependent on 60 days of snow cover and high nitrogen fertility where the ground has yet to freeze.
[7] Typhula blight is a very common and damaging disease of the Great Lakes [2] and Intermountain Northwest[3] regions of the United States.
Aggressiveness of Typhula ishi- kariensis isolates to cultivars of bentgrass species (Agrostis spp.)