Take-All Patch

Pathogen: Gaeumannomyces graminis var. avenae

Identification

Symptoms

  • Bronze or reddish-brown patches on bentgrass
  • Root decline and thinning
  • Often worse on newly established or high-pH sites
Season
Apr, May, Jun, Sep, Oct, Nov
Regions
Pacific Northwest, Northeast, Midwest
Turf Hosts
Bentgrass

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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.