Two blades of grass on left have irregularly shaped tan blotches outlined in brown. Two blades of grass on right have round and oblong tan blotches outlined in brown.

Figure 5. Foliar lesions and leaf spots on blades of tall fescue. The lesions shown on the two blades at left are caused by brown patch disease; the spots on the two blades at right are caused by gray leaf spot disease.

Two blades of grass on left have irregularly shaped tan blotches outlined in brown. Two blades of grass on right have round and oblong tan blotches outlined in brown.

Credit: NC State Extension Turf Pathology.