Eric J. Koeritz1, J.C. Stier1, B.P. Horgan2, and T. Voigt3. (1) University of Wisconsin-Madison, Horticulture Department, 1575 Linden Drive, Madison, WI 53706, (2) University of Minnesota, 254 Alderman Hall, 1970 Folwell Ave, St. Paul, MN 55108, (3) University of Illinois, 1102 S. Goodwin Ave., Urbana, IL, 61801
As a result of the Food Quality Protection Act and public pressure, turfgrass managers are being forced to reduce the usage of potable water and chemicals in their management strategies. Using fine fescue and colonial bentgrass (Agrostis capillaris) on golf course fairways has the potential to reduce fertilizer, irrigation, and pesticide inputs but performance and management of the species needs to be evaluated. Our objectives were to: 1) determine the best cultivars and/or combinations of fine fescue and colonial bentgrass for use as fairway turf, and 2) evaluate the effect of high and low fertility, and 3) evaluate the effect of natural organic vs. synthetic water soluble fertilizer. This project was initiated at the O.J. Noer Research and Educational Facility in Verona, Wisconsin during autumn of 2002 and at the University of Minnesota in 2003. All turf was trafficked with a golf cart traffic simulator beginning the first full year after establishment. Turf data collected includes quality, disease occurrence, and species composition. Playability data collected includes divot recovery and golf ball lie using the Lie-N-Eye II ball lie device. In 2004, a monostand of ‘Longfellow II' chewings fescue (Festuca rubra ssp. commutata) had consistently superior quality to all other grass types followed by a mixture containing strong creeping red fescue (F. rubra var. ssp. rubra), hard fescue (F. trachyphylla), and chewings fescue. Fine fescue and colonial bentgrass mixtures had decent performance but none gave consistently acceptable quality. Plots seeded with mixtures of fine fescue and colonial bentgrass exhibited a decrease in the proportion of fine fescue throughout the growing season with a greater reduction at increased fertility levels. Divot recovery was enhanced by using water soluble fertility program compared to a natural organic fertilizer.
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