(By Jared Hoyle, KSU Turfgrass Research and Extension)
Tall fescue [Festuca arundinacea Schreb.] is one of the most predominantly used cool-season turfgrass species in the transition zone. Its deep root system and coarse textured leafs lend to its ability to withstand drought, heat, and wear stress. Although it is well adapted to survive the summer months in Kansas, it can be susceptible to injury from disease. Brown patch [Rhizoctonia solani] is a disease that can damage leaf tissue, shoots, and the crown of tall fescue during the summer months. This disease is most prevalent during periods of high humidity, high temperature (above 80°F), and high nitrogen levels. During the mornings mycelia can be seen forming a “smoke ring” around the affected area. Applications of preventative fungicides have proven to be a successful management strategy in reducing the occurrence of brown patch incidences in tall fescue stands.
Here are some resources from the past about brown patch!
Last year Dr. Fry was seeing brown patch in May. With moisture and warm nights brown patch can start to develop. http://blogs.k-state.edu/turf/im-not-ready-to-be-thinking-about-brown-patch-jack/
There are many products out there for brown patch control in turfgrass. Which one is right for you. Here is a quick update on research that was conducted at Olathe on some brown patch products. http://blogs.k-state.edu/turf/best-way-to-get-your-turf-noticed-brown-patch/
Do you know what brown patch looks like? Do you know how to tell the difference between turfgrass stress and the disease. Dr. Kennelly can show you the difference. http://blogs.k-state.edu/turf/is-this-brown-patch/
Commercial Management of Brown Patch – https://www.bookstore.ksre.ksu.edu/pubs/EP146.pdf
Homeowner Management of Brown Patch – http://www.plantpath.k-state.edu/extension/documents/turf/Brown%20patch%20%20homeowners%202016.pdf