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Sep 11, 2023 ... Brown patch can cause serious damage to tall fescue and perennial ryegrass lawns under certain conditions. The disease will result in thin, poor ... Rhizoctonia brown patch is a common fungal disease of all turf grasses. Symptoms vary depending upon the grass species and mowing height. In general, brown ... Brown patch is caused by a fungal pathogen. (Rhizoctonia solani) that affects all cool sea- son turfgrass species. It is a foliar disease. This fungus produces distinct circular patches of dead grass. As the grass recovers in the center, a donut-like shape often occurs. Brown patch is a fungal disease that develops during the hot, humid conditions of summer, transforming a green lawn into one with circular brown patches a few ... Brown patch is characterized by roughly circular patches of yellow-to-brown grass that can measure up to 3 feet long. Apr 27, 2022 ... Brown Patch is caused by a specific type of fungus named Rhizoctonia solani. This fungal disease causes circular patches of browning turf to plague your lawn. To control an outbreak of Brown Patch, rake and fluff your grass where the Brown Patch has occurred to speed up the drying process. Use organic fertilizers when ... Causal Agent and Hosts: Brown patch, caused by the soil-inhabiting fungus,. Rhizoctonia solani, is one of the most common turf diseases in New Mexico. All. Brown patch, a fungal disease caused by Rhizoctonia solani, presents a serious threat to most turf grasses each autumn. This is one of those “good news, bad ...