Photo of the week: Gray leaf spot on rye vs. fescue
October 8, 2017
Chris Harriman (@harrimanscash on Twitter) from Cattail Creek Country Club in Maryland provided this week's photo of gray leaf spot (GLS) on ryegrass (Lolium perenne). Although improved ryegrass varieties with good GLS tolerance are available, they can still have some problems under heavy disease pressure. The ryegrass varieties in the photo are unknown, but they are old and are clearly not resistant to GLS. One alternative to battling GLS with is to switch to an entirely different turfgrass species that…