Which symptom is typically associated with brown patch disease?

Brown patch disease, caused by the fungus Rhizoctonia solani, is primarily recognized for its distinctive symptoms. One of the hallmark features of this disease is the presence of smoke rings or circular patterns of grayish mycelium around patches of dying grass. As the disease progresses, you will notice the grass in the center of these patches turning brown and often dying, while the edges may be characterized by this grayish fungal growth.

The presence of these symptoms provides clear evidence of brown patch disease, making it easier for lawn care professionals to identify and manage the issue effectively. This particular diagnostic feature is integral for managing turf health, as it distinguishes brown patch from other potential turf disorders that may present with similar symptoms, but lack the characteristic mycelium or specific patching patterns.