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Home Lawn Lawn Diseases Turfgrass damage should be diagnosed as soon as possible. Damage is often blamed on diseases or insects when climate, environmental conditions, or cultural practices are the real causes. Tree competition, cutting height, cutting frequency, herbicide damage, nutrient chlorosis, and soil compaction sometimes cause diseases to develop. Diseases are usually more severe in lawns with a heavy thatch. Thatch is a layer of partially decomposed leaves, stems, and roots at the soil surface. It builds up over several years and restricts the movement of air, water, and fertilizers into the soil. When thatch is heavy, roots are generally shallow, which increases damage from drought. Following are brief descriptions of the most common diseases of warm-season grasses and some suggested control recommendations. For more complete descriptions of these diseases and updated chemical control recommendations, use rates, timing of applications, and other information, refer to other Extension turf disease publications and suggested chemical labels. Always read and follow label directions, as many pesticides have restrictive use or application guidelines that can be applied only by professional applicators. For a homeowner fungicide database, go to http://www.extensionplantclinics.msstate.edu.
Other Disease Information
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