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Brown Ring Patch

Also known as: Waitea patch

Pathogen: Rhizoctonia circinata var. circinata

Identification

Symptoms

  • Yellow, orange, or brown rings on annual bluegrass putting greens
  • Often appears spring into early summer
  • Can be slow to heal
Season
Apr, May, Jun
Regions
All Regions
Turf Hosts
Annual Bluegrass

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Sources

This is identification help, not a diagnosis. Symptoms described here can overlap between diseases and other causes (drought, wear, nutrient deficiency). When you're not sure, or before applying any treatment, contact your state's Cooperative Extension office - most offer free or low-cost diagnosis and know your local conditions best.