Author Archive
About Karl Danneberger, Ph.D.
Karl Danneberger, Ph.D., is a professor in the department of horticulture and crop science at The Ohio State University. He is author of the popular The Turf Doc column that appears monthly in Golfdom. Karl writes on topics ranging from Poa annua to pest control.
Posts by Karl Danneberger, Ph.D.
Driving to work with my air conditioner blasting and “Cherry Cherry” (from the album “Hot August Night”) blaring on the radio, I started reminiscing about my college turfgrass classes. At Read more»
Within the rules of golf, the collar falls in the category of “through the green.” The definition of “through the green” (the term was changed, but more on that later) Read more»
This spring, I headed to Hyde Park Country Club in Cincinnati to meet Superintendent Pat O’Brien. Hyde Park CC is a stately club, established in 1909 with a nine-hole course Read more»
Walking across my lawn in May, I feel bumpiness under my feet. Although not visually apparent, I know bumpy turf is a sign of earthworm casts. Helping verify my diagnosis Read more»
The arrival of spring’s warm, sunny days awakens turfgrasses from their dormant winter state. Brownish turf is replaced by dark green, which announces the rejuvenation of life on a golf Read more»
Finally, the first day of spring. It’s still cool, but it’s sunny, and the snow is finally gone. After five months of storage, I lift the garage door, revealing my Read more»