In a random check of several producers' ryegrass plantings in Gadsden County, it appears that all pastures were free and clean of any symptoms. Gray leaf spot is a common disease on turf grasses and there are no recommended controls for use on forages. The disease should dissipate with cooler weather and should present little risk to forage plantings. The digitized photo below indicates the general lesion appearance. The leaf spot tends to be round to oblong in shape and its color may vary from tan to gray with purple or brown borders.
Lesions can also form on the stem of the plant.
Some chlorosis may also occur around the lesion. Should you have any questions concerning the disease, please feel free to contact us at the addresses above. Agents who have plant samples with similar symptoms may send them to the Plant Diagnostic Clinic at the North Florida Research and Education Center at Quincy.