Full TGIF Record # 80630
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DOI:10.21273/HORTSCI.37.3.502
Web URL(s):https://journals.ashs.org/hortsci/view/journals/hortsci/37/3/article-p502.xml
    Last checked: 11/15/2019
    Requires: PDF Reader
Publication Type:
i
Refereed
Author(s):Ervin, E. H.; Ok, C.-H.; Fresenburg, B. S.; Dunn, J. H.
Author Affiliation:Ervin: Assistant Professor, Crop and Soil Environmental Sciences Department, Virginia Polytechnic Institute and State University, Blacksburg, VA; Ok: Graduate Research Assistant, Department of Horticulture, University of Missouri, Columbia, MO; Fresenburg: Research Associate, Department of Horticulture, University of Missouri, Columbia, MO; Dunn: Professor, Department of Horticulture, University of Missouri, Columbia, MO
Title:Trinexapac-ethyl restricts shoot growth and prolongs stand density of 'Meyer' zoysiagrass fairway under shade
Section:Turf management
Other records with the "Turf management" Section
Source:HortScience. Vol. 37, No. 3, June 2002, p. 502-505.
# of Pages:4
Publishing Information:Alexandria, VA: American Society for Horticultural Science
Keywords:TIC Keywords: Trinexapac-ethyl; Shoot growth; Density; Golf fairways; Golf courses; Zoysia japonica; Cold resistance; Shade; Light intensity; Application rates; Tiller density; Growth regulators
Cultivar Names:Meyer
Abstract/Contents:"'Meyer' zoysiagrass (Zoysia japonica Steud.) is a popular turfgrass species for transition zone golf course fairways and tees because it is generally winter hardy while providing an excellent playing surface with minimal chemical and irrigation inputs. However, its functionality declines readily on many of the shaded areas on these courses. Reduced irradiance causes excessive shoot elongation, reduced tillering, and weak plants that are poorly suited to tolerate or recover from traffic and divoting. Trinexapac-ethyl (TE) effectively reduces gibberellic acid (GA) biosynthesis and subsequent shoot cell elongation. The objective of this study was to determine if monthly applications of TE would reduce shoot elongation of 'Meyer' zoysiagrass and improve stand persistence under two levels of shade. Shade structures were constructed in the field that continuously restricted 77% and 89% irradiance. A mature stand of 'Meyer' was treated with all combinations of three levels of shade (0%, 77%, and 89%) and three levels of monthly TE application [0,48 g·ha-1a.i. (0.5x), and 96 g·ha-1a.i. (1x)] in 1998 and 1999. In full sun, the 0.5x-rate reduced clipping production by 17% to 20% over a four-week period and the 1x-rate by 30% to 37%. Monthly application of TE at the 1x-rate increased 'Meyer' tiller density in full sun and under 77% shade. Both rates of TE consistently reduced shoot growth under shade relative to the shaded control. Only the monthly applications at the 1x-rate consistently delayed loss of quality under 77% shade. The zoysiagrass persisted very poorly under 89% shade whether treated or not with TE and plots were mostly dead at the end of the experiment. Our results indicate TE can be an effective management practice to increase 'Meyer' zoysiagrass persistence in shaded environments."
Language:English
References:22
Note:Tables
Graphs
See Also:Other items relating to: SHADEW
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Ervin, E. H., C.-H. Ok, B. S. Fresenburg, and J. H. Dunn. 2002. Trinexapac-ethyl restricts shoot growth and prolongs stand density of 'Meyer' zoysiagrass fairway under shade. HortScience. 37(3):p. 502-505.
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DOI: 10.21273/HORTSCI.37.3.502
Web URL(s):
https://journals.ashs.org/hortsci/view/journals/hortsci/37/3/article-p502.xml
    Last checked: 11/15/2019
    Requires: PDF Reader
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