https://www.umass.edu/agriculture-food-environment/turf/fact-sheets/summer-patch-of-bluegrasses
Summer Patch of Bluegrasses : Turf : Center for Agriculture, Food, and the Environment (CAFE) at...
Summer patch is caused by the fungus Magnaporthe (Magnaporthiopsis) poae. This disease can affect Poa species and fine-leaved fescues on golf courses, sports...
summer patchthe environmentbluegrassesturfcenter