DeSoto Extension Agent
Root rot disease creeping up in Louisiana lawns
LSU AgCenter plant doctor Raj Singh says homeowners around the state are beginning to see an increase in take-all patch, also known as take-all root rot.
The disease is caused by the soilborne fungus Gaeumannomyces graminis var. graminis (Ggg). The fungus is frequently found in association with turfgrass roots without causing significant disease.
“Take-all patch disease can be quite destructive,” Singh said. “The aboveground symptoms appear after the root system has already been severely compromised.”
The appearance of these symptoms generally coincides with periods of several abiotic stresses.
“The initial symptoms of takeall root rot are generally visible as an overall yellowing, thinning or drought-stressed appearance of the turf,” Singh said. “Diseased roots are often short, dark-colored and somewhat brittle.”