In many areas, roots are weak and poorly development. Core aeration is recommended regularly in spring and fall to help prevent the problem. Luckily, the disease is primarily foliar at this time, so fungicide applications will help in recovery. A DMI fungicide plus chlorothalonil are recommended. Avoid dragging the sticky spores by mowers and other equipment from diseased areas to unaffected areas.
Dollar spot is also rampant.
This disease should respond well to a variety of fungicides in the absence of resistance problems. Avoid using the same chemical group repeatedly. The disease is more severe where turf is growing slowly due to drought and low nitrogen. It is also favored by long hours of moisture on leaf blades, so it is recommended to remove dew from fairways by mowing or whipping in the continuing humid weather. Just rake or hose away.