First reports of "brown ring patch" (waitea patch) in the U.S.?

Superintendents who manage Poa annua greens in California, Illinois and elsewhere have recently been reporting difficulty in controlling a disease that looks a lot like yellow patch. The only problem is, it isn't behaving exactly like yellow patch.

While yellow patch (caused by Rhizoctonia cerealis) is thought to occur only during cool weather (air temperatures 50 - 65F), the new disease has been found at a wide range of temperatures, from 50 - 90F. And while yellow patch is fairly…