Full TGIF Record # 290029
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Web URL(s):https://scisoc.confex.com/crops/2017am/webprogram/Paper106961.html
    Last checked: 10/09/2017
Publication Type:
i
Report
Content Type:Abstract or Summary only
Author(s):Culpepper, Travis John; Young, Joseph Ronald
Author Affiliation:Culpepper: Plant and Soil Science, Texas Tech University, Lubbock, TX; Young: Texas Tech University, Lubbock, TX
Title:Chronic drought stress of common lawn turf species in the United States transition zone
Section:C05 Turfgrass Science
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Turf science and management general poster (includes student competition)
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Meeting Info.:Tampa, Florida: October 22-25, 2017
Source:ASA, CSSA and SSSA International Annual Meetings. 2017, p. 106961.
Publishing Information:[Milwaukee, Wisconsin]: [American Society of Agronomy and the Entomological Society of America]
# of Pages:1
Keywords:TIC Keywords: Bouteloua dactyloides; Cynodon dactylon; Drought resistance; Drought stress; Evaluations; Festuca arundinacea; Physiological responses; Transition zone; Urban habitat; Water supply; Water use efficiency
Abstract/Contents:"Urban water supply is critically important in a rapidly growing United States population; this research highlights the importance of water use efficiency in urban turf landscapes. A greenhouse chronic drought stress trial was conducted in Lubbock, TX. Three common turfgrasses species grown in the transition zone were chosen: tall fescue (Festuca arudinacea Schreb.), buffalograss (Buchloe dactyloides Nutt, Engel.), and bermudagrass (Cyonodon dactylon Pers.). Supplemental irrigation was applied at 89, 74, 59, or 44 ml per application three times per week, which is equivalent to 3.2, 2.6, 2.1, or 1.6 cm per week, respectively. Variations in volumetric water content were confirmed with TDR measurements. Visual turf quality and leaf firing were obtained two times per week along with digital image analysis and NDVI to assess drought responses of species. Canopy temperature and photosynthetic measurements provided a physiological response of drought to these turf species. Lastly, root length and dry mass were ascertained at the conclusion of each experiment. No statistical differences in rooting parameters were observed; therefore, differences among turf species are indicative of drought tolerance responses. Buffalograss net photosynthesis provided positive slope for all irrigation levels, which corresponds with minimal leaf firing observed. Bermudagrass had highest mean percent green cover and NDVI when combining all irrigation levels. Heat within the greenhouse negatively impacted net photosynthesis of tall fescue overall; however, percent green cover, and canopy temperature were similar to other turf species for 11 days of variable irrigation before drought symptoms became evident. Applying 74 or 89 ml of water three times per week provided statistically similar results for all parameters compared to lower irrigation levels. This research demonstrates the drought tolerance capabilities of turf species commonly used in residential landscapes within the transition zone and the physiological response of the species to chronic drought stress."
Language:English
References:0
Note:This item is an abstract only!
"600"
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Culpepper, T. J., and J. R. Young. 2017. Chronic drought stress of common lawn turf species in the United States transition zone. Agron. Abr. p. 106961.
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    Last checked: 10/09/2017
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