Golf Course Management

MAR 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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03.19 GOLF COURSE MANAGEMENT 83 conserve water without sacrificing turf qual- ity when turfgrass has been treated with a soil surfactant and if traffic is present. Trafficked or non-trafficked areas with drainage issues or areas prone to high soil moisture may benefit from surfactant applications. Funding e authors would like to thank the Na- tional Institute for Agriculture, Michigan State University AgBioResearch, Project GREEEN, and GCSAA for financial support of this project through the Environmental Institute for Golf. We also thank Aquatrols Corp. for financial support and product dona - tions. anks also to the Rain Bird Corp. for donation of automated irrigation equipment. Literature cited 1. Beard, J.B. 1973. Turfgrass: Science and culture. Prentice Hall, Englewood Cliffs, N.J. 2. Krans, J.V., and K. Morris. 2007. Determining a pro- file of protocols and standards used in the visual field assessment of turfgrasses: A survey of National Turf - grass Evaluation Program-sponsored university sci- entists. Applied Turfgrass Science 4:1. doi:10.1094/ ATS-2007-1130-01-TT 3. Lyons, E.M., P.J. Landschoot and D.R. Huff. 2011. Root distribution and tiller densities of creeping bentgrass cultivars and greens-type annual bluegrass cultivars in a putting green. HortScience 46:1411-1417. 4. Wilkinson, J.F., and R.H. Miller. 1978. Investigation and treatment of localized dry spots on sand golf greens. Agronomy Journal 70:299-304. Kevin Laskowski is a graduate student, Kevin W. Frank is an associate professor and Extension turf specialist, and Emily B. Merewitz (merewitz@msu.edu) is an assistant professor in the department of plant, soil and microbial sciences at Michigan State University, East Lansing, Mich. • This research attempted to determine how surfactants can be used to optimize soil water content, particularly for putting green species such as creeping bentgrass and annual bluegrass. • The surfactant treatment improved turf quality and NDVI in late summer of both years and increased annual bluegrass and creeping bentgrass turf quality during water deficit, excessive water, and/or foot traffic conditions. • The surfactant treatment decreased moisture retention when plots were overwatered, and increased moisture when plots were underwatered. The RESEARCH SAYS Surfactant-treated plots (white outline) are located within larger drought-stressed plots (6% soil moisture) of annual bluegrass (Poa annua).

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