Take-All Patch

Pathogen: Gaeumannomyces graminis var. avenae

Host: Colonial Bentgrass, Creeping Bentgrass, Velvet Bentgrass

Environmental Requirements: root infection occurs during cool wet weather, symptom expression during spring and fall when plants fail to make normal growth, and during heat and drought stress

Stand Symptoms: irregular-shaped circular bronzed patches

Plant Symptoms: foliage bronzed, roots dark brown

Fungal Signs: dark brown to black ectotrophic hyphae on the roots and crown

Environmental Modification: lower pH with sulfur or acidifying fertilizer, avoid lime and alkaline fertilizers

Plant Resistance: replace Bentgrass with resistant species of turfgrasses if possible

Stand Symptoms
Stand Symptoms

Plant Symptoms
Plant Symptoms