installation in 2009, plots were planted with 225 ft 2 of locally grown kentucky bluegrass ( Poa pratensis ) sod and 75 ft 2 of additional ornamental plants, including burning bush ( Euonymus alatus ), blue fescue ( Festuca glauca ), littleleaf boxwood
Drain tile installation into a native-soil athletic field and subsequent sand topdressing applications are cost-effective alternatives to complete field renovation. However, if cumulative topdressing rates exceed root system development, surface stability may be compromised. The objective of this research was to evaluate the effects of cumulative topdressing, over a compacted sandy loam soil, on the fall wear tolerance and surface shear strength of a kentucky bluegrass (Poa pratensis)–perennial ryegrass (Lolium perenne) stand. Research was initiated in East Lansing, MI, on 10 Apr. 2007. A well-graded, high-sand-content root zone (90.0% sand, 7.0% silt, and 3.0% clay) was topdressed at a 0.25-inch depth [2.0 lb/ft2 (dry weight)] per application, providing cumulative topdressing depths of 0.0, 0.5, 1.0, 1.5, or 2.0 inches applied from 11 July to 15 Aug. 2007. Fall traffic was applied twice weekly to all treatments from 10 Oct. to 3 Nov. 2007. In 2008, topdressing applications and traffic, as described earlier, were repeated on the same experimental plots. Results obtained from this research suggest that the 0.5-inch topdressing depth applied over a 5-week period in the summer will provide improved shoot density and surface shear strength in the subsequent fall. Results also suggest that topdressing rates as thick as 4.0 inches accumulated over a 2-year period will provide increased shoot density, but diminished surface shear strength.
of ethephon treatment of drought resistance of Kentucky bluegrass ( Poa pratensis. L). Beijing For. Univ., Beijing, China, Master’s Diss Hare, P.D. Cress, W.A. van Staden, J. 1999 Proline synthesis and degradation: A model system for elucidating
turfgrasses for wear tolerance using a wear simulator Intl. Turfgrass Soc. Res. J. 9 137 145 Bourgoin, B. Mansat, P. AitTaleb, B. Quaggag, M.H. 1985 Explicative characteristics of treading tolerance in Festuca rubra , Lolium perenne , and Poa pratensis 235
Doorenbos, J. Pruitt, W.O. 1977 Crop water requirements. FAO Irr. Drainage Paper 24 Food and Agriculture Organization of the United Nations Rome Greipsson, S. 1999 Seed coating improves establishment of surface seeded Poa pratensis used in revegetation
://websoilsurvey.nrcs.usda.gov/app/ >. National Turfgrass Evaluation Program 2008 A guide to NTEP turfgrass ratings 15 Jan. 2008 < http://www.ntep.org/reports/ratings.htm >. Nektarios, P. Petrovic, A.M. Sender, D. 1999 Tree leaf decomposition effects on kentucky bluegrass ( Poa pratensis L.) J
a 1- to 9-scale, where 9 is no injury or reduction in establishment and 1 is no establishment or all bleached tissue. There were also tall fescue ( Festuca arundinacea ) and kentucky bluegrass ( Poa pratensis ) cultivars included in our study to
Retail lawn seed products sold in local stores in the upper midwestern United States contain kentucky bluegrass ( Poa pratensis ), perennial ryegrass ( Lolium perenne) , tall fescue ( Schedonorus arundinaceus ), and/or fine fescue species
Vermicomposting is the process of fragmenting organic wastes with certain species of earthworms. A variety of vermicomposts are being marketed as fertilizer materials for turfgrass management, particularly in the golf course industry. In 2002 and 2003, field trials were conducted on established kentucky bluegrass (Poa pratensis) in Columbus, Ohio, to evaluate the use of vermicomposted animal, food, paper, and turfgrass clipping waste materials as a turfgrass fertilizer under home lawn maintenance conditions. Visual quality of the plots was significantly higher for 2 weeks after application of paper vermicompost, regardless of application rate. Few other differences in either turfgrass visual quality of clipping yields were observed during a 6-week period after application, regardless of application rate or source of vermicompost. Based on the results of these studies, the use of vermicompost as a fertilizer material on established turfgrass is not warranted.
Turfgrass water conservation has become important in many parts of the world, including the transition zones of Mediterranean Europe. Species selection is considered one of the most important factors influencing turfgrass water use, and drought-tolerant cool-season species are encouraged to be used in areas where long dormancy periods of warm-season grasses is unacceptable. A field study was conducted from Mar. 2007 to Sept. 2009 at Padova University, Italy, to evaluate establishment and performance of nine turfgrass cultivars under reduced-input maintenance. The study included hybrid bluegrass (Poa pratensis × P. arachnifera) cultivars Solar Green, Thermal Blue, and Thermal Blue Blaze; kentucky bluegrass (Poa pratensis) cultivars Cocktail, Cynthia, and Geronimo; and tall fescue (Festuca arundinacea) cultivars Apache, Murray, and Regiment. Establishment rate was assessed after two seeding dates (20 Mar. and 20 Sept.), and grasses were subsequently fertilized with 15 g·m−2 nitrogen per year and irrigated once every 2 weeks at 40% of reference evapotranspiration from June to August. Turfgrass and weed cover were estimated 60 days after seeding (DAS), and turf quality was evaluated weekly on a scale of 1 (worst) to 9 (best). Normalized difference vegetation index (NDVI) was measured weekly during 2009. Tall fescue cultivars exhibited greater quality than hybrid bluegrass or kentucky bluegrass, under both spring and autumn seeding. Hybrid bluegrass had similar quality to kentucky bluegrass cultivars, although they performed well only when sown in autumn. Our results suggest that among the tested grasses, tall fescue performed better under the reduced irrigation in a Mediterranean transition zone climate than kentucky bluegrass or hybrid bluegrass.