This disease appears as light tan patches of dead leaf tissue about the size of a silver dollar on closely mown golf turf but on taller cut athletic turf the patches may appear as large as 3-4 inches in diameter, although usually only the upper half of the foliage is affected. Lesions on individual leaves appear as hourglass-shaped tan lesions which straddle the leaf blade and have a reddish brown border on both the upper and lower surface of the lesion. Chemical controls are generally not warranted. Proper nitrogen fertilization will stimulate turf growth and the affected tissue can be mown off.
Supina bluegrass is more susceptible to the disease than Kentucky bluegrass or perennial ryegrass.