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.
Of all the seasons, spring is where we see the greatest differences in growth and color among the turfgrass species caused by weather. Greens often appear as a patchwork of Read more»
Stomata are simple structures defined as a pore and accompanying guard cells. Occupying less than 1 percent of the leaf surface, stomata are gatekeepers between resources a plant needs, like Read more»
This past summer, Renata, one of my graduate students, received an internship offer from the USGA’s Green Section. She asked me about proper attire for the internship. Telling students what Read more»
Another holiday season is over and we have months of winter to look forward to. That means this is a lethargic time for me. My time is mainly spent eating Read more»
This past year I bought a 1969 Pontiac Firebird. I didn’t buy it because I had some deep passion, although I did have a ’67 Camaro 327 in high school. Read more»
In 1920, Inverness Country Club, Toledo, Ohio, played host to the U.S. Open. At the time, the greens chairman complained about — or maybe brought to light — the lack Read more»