There are several factors that tend to make the grass more susceptible to brown patch. Another condition that leads to severe disease development is watering late in the afternoon and allowing the grass to remain wet for long periods of time. Also, the buildup of thatch is another condition that promotes excessive disease development. Thatch is the buildup of grass and plant debris in the root and crown areas of the turf. The accumulation of thatch creates a most favorable environment for the development of many disease-causing fungi and at the same time a most unfavorable environment for the grass.
Prevention is the best method of disease control.
To prevent brown patch or other lawn diseases from developing, practice the following disease-control procedures. Use varieties that are adapted for your area. Manage the lawn properly by using recommended practices for watering, fertilizing, and mowing. Follow procedures for thatch control. When brown patch is a problem, limit the amount of nitrogen fertilizer applied.