(By Jared Hoyle; KSU Turfgrass Research and Extension)
Hope you haven’t seen it this year and won’t see it but I have talked to some people and have already heard of a couple occurrences of gray leaf spot.
So instead of typing out all the information about grey leaf spot I will send you to a great resource that has tons of information about great leaf spot.
Check it out here – http://www.turffiles.ncsu.edu/diseases/gray-leaf-spot
Also check on page 13 for more control options for grey leaf spot in this publication – http://www2.ca.uky.edu/agc/pubs/ppa/ppa1/ppa1.pdf