Golfers who like to hit the links on warm winter days could see more playing time thanks to turfgrass research done by the University of Arkansas System Division of Agriculture and the Bumpers College of Agriculture and Life Sciences.
Eric DeBoer, a graduate student in the Horticulture Department, studied the relationship between temperature and use of covers on ultra-dwarf Bermudagress putting greens, as well as the effects of wetting agents on green up.
Mike Kenna, research director for the USGA, the primary funder for the study, said the organization was very pleased with the research.
“The results will give superintendents better information on the low temperature threshold for applying the covers,” he said. Thursday. “This will help reduce the number of covering events, save labor costs, and increase days the golf course is open for play. “
The research is important for courses in the transition zone, a climate belt that’s ideal for neither warm nor cool season grasses. Northern Arkansas is in the transition zone and DeBoer wanted to see how low the threshold temperature for covering greens could go. While covering greens protects them from cold weather damage, it also prevents play and requires more manpower to deploy and remove, adding to the course’s operating costs.
He tested Champion, TifEagle and MiniVerde using covers at 25 degrees, 22 degrees, 18 degrees and 15 degrees and also had control plots that remained uncovered.
The results were surprising to DeBoer.
“Initially, I thought we’d be able to lower the temperature threshold a little bit, but I didn’t think that we would see the results that we saw,” he said. “Even at 15 degrees, it was very comparable to the plots covered at 25.”
“Maybe it’s best to just keep covering at 25 degrees as an insurance policy,” he said, but in cases where the course “can’t afford to keep a big crew of people on to go out and place covers and remove them,” adding that the research suggests that superintendents can lower the cover temperature and not see any detrimental effects in the spring.
Among the three turf cultivars, Champion, saw significantly more winter injury than did TifEagle and MiniVerde.
He also found that applying a late-season wetting agent – an application that helps water penetrate the soil – improves spring green up.
The research was conducted with professors Mike Richardson and Doug Karcher, and program technician John McCalla.
Additional support for the research came from the Arkansas Turfgrass Association and the Arkansas Chapter of the Golf Course Superintendents Association of America.
For more information about the turfgrass program visit, http://horticulture.uark.edu/research-extension/turf/index.php.
University of Arkansas, By: Mary Hightower
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