Turf affected: Bluegrass and Ryegrass
Symptoms: Straw-colored patches 2 to 6 inches in diameter. Hourglass shaped lesions with reddish-brown margins develop across the leaves.
Disease occurrence: Late March to early November.
Management: Drought soils and prolonged wet foliage are key factors for disease development, so water deeply but infrequently early in the day to allow the leaf blade to dry off. Regular fertilizations will help the turf to overcome the disease. Collect and dispose of grass clippings when disease is present.