Problem: Spring Dead Spot
This lawn disease is caused by three fungi (Leptosphaeria korrae, Ophiosphaerella herpotricha, and Gaeumannomyces graminis var. graminis) that affect bermudagrass, causing stolon and root rot. Spring dead spot is common in areas where temperatures drop low enough to promote winter dormancy of bermudagrass. It is most likely to develop in lawns with excess thatch and in lawns that are overfertilized or fertilized late in the growing season.
Avoid overfertilization and late-season fertilization. Keep thatch to a thickness of no more than 3/4 inch. Keep the lawn healthy and vigorous to encourage bermudagrass regrowth into dead areas. Replace the sod and soil of badly diseased areas.