Golf Course Management

JUN 2019

Golf Course Management magazine is dedicated to advancing the golf course superintendent profession and helping GCSAA members achieve career success.

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Page 67 of 139

66 GOLF COURSE MANAGEMENT 06.19 Combining trinexapac-ethyl with a soil surfactant to reduce bermudagrass irrigation Treating bermudagrass with a tank mix of a surfactant and trinexapac-ethyl was more effective in promoting turf quality under drought conditions than applying the products individually. Despite the numerous benefits provided by turfgrass, the amount of water required to maintain the turf is a major concern in many communities. For this reason, multi- pronged approaches to conserve irrigation water — such as applying deficit irrigation and using warm-season grasses, alternative water sources and efficient irrigation systems — have been investigated and recommended in recent years (3). Approaches to conserving irrigation water Deficit irrigation — defined as the appli- cation of water below full crop water require- ments (evapotranspiration or ET) — has been widely adopted as a strategy for conserving ir- rigation water (4). However, such an approach exposes turfgrasses to chronic stress, and re- Matteo Serena, Ph.D. Mino Sportelli, M.S. Elena Sevostianova, Ph.D. Rossana Sallenave, Ph.D. Bernd Leinauer, Ph.D. Editor's note: To be more sustainable, golf courses must use water wisely, and reducing water consumption in general and substituting lower-quality water where possible are both options. Scientists have been developing improved turfgrasses that are drought-resistant and salt-tolerant and therefore need less irrigation or permit the use of effluent or other types of lower-quality water. New products and management practices have also reduced the amount and quality of water required for golf course management. The three articles in this month's research section are examples of recent work that can assist golf course superintendents in reducing water consumption while maintaining healthy, attractive and playable turf. This research was funded in part by the United States Golf Association. The study area was Princess 77 bermudagrass maintained at fairway height and located adjacent to New Mexico State University's golf course in Las Cruces, N.M. Photos by Matteo Serena

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