Frequently asked questions

What does curvularia look like on warm-season turf, and which species are most susceptible?

Curvularia causes a gradual thinning and yellowing of the turf, often described as "fading out." Individual leaf blades develop small, dark brown lesions with yellow halos that merge as the disease progresses, giving the turf a bronzed, desiccated appearance. Couch (bermudagrass), kikuyu, and buffalo grass are commonly affected. The disease is most active in warm, humid conditions and is frequently misdiagnosed as heat stress or nutrient deficiency.

Why does curvularia often appear alongside other stress factors?

Curvularia is an opportunistic pathogen that exploits turf already weakened by heat stress, drought, low mowing, compaction, or nutrient imbalance. It commonly develops during prolonged warm, humid weather when turf is under cumulative stress. This is why improving overall plant health through balanced fertility, appropriate irrigation scheduling, and reduced mechanical stress is as important as chemical treatment.

How should turf managers approach curvularia control?

Address cultural factors first by raising mowing heights slightly, ensuring adequate potassium nutrition, and avoiding drought stress through appropriate irrigation management. Early intervention before extensive leaf loss leads to faster recovery. For specific fungicide recommendations and an integrated management plan, speak with the experts at Greenway Turf Solutions.