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Take-All Root Rot of Warm-Season Turf

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Category: Turf Resources

Although commonly confused with a fungal disease called Brown Patch, Take-all root rot is caused by the fungus Gaeumannomyces graminis var. graminis. The fungus primarily damages the turf’s roots while the plant is weakened during moist and warm conditions of the early spring and summer. Other contributing factors are high soil pH, soil compaction, improper fertility, improper cutting height, and herbicide injury. Symptoms include irregular patches with yellowing. While there is no product currently available which destroys the fungus, and excessive treatment of any kind can actually strengthen the infestation, control and management with proper nutrient and fertilizer application, and prudent cutting practices can help cull the damage and spread.