Full TGIF Record # 131778
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Web URL(s):https://gsrpdf.lib.msu.edu/?file=/2000s/2008/080106.pdf
    Last checked: 01/26/2017
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Author(s):Anderson, Jeff; Taliaferro, Charles; Martin, Dennis; Wu, Yanqi; Anderson, Michael
Author Affiliation:Jeff Anderson and Martin: Professor, Department of Horticulture and Landscape Architecture; Taliaferro: Emeritus Regents Professor; Wu: Assitant Professor; Michael Anderson: Associate Professor, Department of Plant and Soil Sciences, Oklahoma State University, Stillwater, Oklahoma
Title:Bermudagrass freeze tolerance: Oklahoma State University reasearchers use laboratory and field evaluations to compare bermudagrass freeze tolerance
Section:Research you can use
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Source:USGA Green Section Record. Vol. 46, No. 1, January/February 2008, p. 6-9.
Publishing Information:Far Hills, NJ: United States Golf Association, Green Section
# of Pages:4
Keywords:TIC Keywords: Cynodon; Freezing; Winter; Cold resistance; Frost resistance; Regrowth
Abstract/Contents:Presents a study conducted to "quantify freeze tolerance of advanced lines, recently released cultivars, and standard varieties entered in the 2002 National Turfgrass Evaluation Program (NTEP) bermudagrass trial using laboratory-based methods." Explains that "standardized, quantitative information on bermudagrass freeze tolerance is vital to scientists to track progress in developing new cultivars. Freeze tolerance data also are beneficial to turfgrass managers selecting turfgrasses for the transition zone." Details methods and materials used in the study, stating that "bermudagrass plants were established and maintained in growth chambers. For studies with seed-propagated cultivars, seed from the lots used in the 2002 NTEP bermudagrass trial was obtained from the sponsor. Twenty seven of the 29 seed-propagated entries were included in this study...After plants had acclimated to fall-like temperatrues, they were trimmed of top-growth and placed in a freeze chamber with a temperature sensor in each pot. The chamber was programmed to slowly cool the plants, allowing them to be removed over a range of temperatures. Ideally, no damage would occur at the warmest temperatures, and all plants would be killed by exposure to the coldest temperatures. After being removed from the freeze chamber, plants were thawed and returned to the growth chamber to observe regrowth." Reports variance in freeze tolerance, stating that "seed-propagated bermudagrasses ranged in freeze tolerance from 22.5┬░ F [Fahrenheit] (-5.3┬░ C [Celsius]) (SWI-1003)...to 16.3┬░ F (-8.7┬░ C) (CIS-CD6)...Fifteen cultivars had numerically greater, yet non-significant differences, in freeze tolerance relative to the standard. Transcontinental, SWI-1014, Riviera, and CIS-CD6 were significantly more cold hardy than Arizona Common. Although Yukon and Transcontinental differed from Arizona Common by the same amount, the difference was not significant for Yukon at the 5% level due to greater variabililty in data from Yukon." Concludes that "although many factors in addition to freeze tolerance will be assessed in making cultivar selections, choices are...available with freeze tolerance suitable for areas of the transition zone requiring superior winter hardniess."
See Also:See also USGA TERO version "Bermudagrass freeze tolerance" USGA Turfgrass Environmental Research Online, 16 (18) September 15 2007, p. [1-7] R=128187 R=128127
Note:Includes sidebar, "Connecting the dots: A Q&A with Dr. Jeff Anderson regarding the use of artificial freeze testing to evaluate turf for cold hardiness.", p. 9
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ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Anderson, J., C. Taliaferro, D. Martin, Y. Wu, and M. Anderson. 2008. Bermudagrass freeze tolerance: Oklahoma State University reasearchers use laboratory and field evaluations to compare bermudagrass freeze tolerance. USGA Green Sec. Rec. 46(1):p. 6-9.
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    Last checked: 01/26/2017
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