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| DOI: | 10.1016/j.agwat.2015.03.020 |
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| Web URL(s): | http://www.sciencedirect.com/science/article/pii/S0378377415001031
Last checked: 06/04/2015
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Wherley, B.;
Dukes, M. D.;
Cathey, S.;
Miller, G.;
Sinclair, T. |
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| Author Affiliation: | Wherley: Dept. of Soil and Crop Science, Texas A&M University, College Station, TX; Dukes: Dept. of Ag. and Biological Engineering & Center for Landscape Conservation and Ecology, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL; Cathey: School of Arts and Sciences, Johnson University, Knoxville, TN; Miller and Sinclair: Crop Science Dept., North Carolina State University, Raleigh, NC |
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| Title: | Consumptive water use and crop coefficients for warm-season turfgrass species in the Southeastern United States |
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| Source: | Agricultural Water Management. Vol. 156, July 1 2015, p. 10-18. |
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| Publishing Information: | [Amsterdam]: Elsevier Scientific Pub. |
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| # of Pages: | 9 |
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| Keywords: | TIC Keywords: Cultivar evaluation; Cynodon dactylon x Cynodon transvaalensis; Evapotranspiration rate; Paspalum notatum; Regional variation; Stenotaphrum secundatum; Water use rate; Zoysia japonica
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| Cultivar Names: | Tifway; Empire; Floratam; Argentine |
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| Abstract/Contents: | "Increased urban demand for landscape irrigation, as well as interest in promoting water-use efficient species by municipalities, water purveyors, and homeowners associations emphasize the need for comparative data on consumptive water use by warm-season lawn grasses. The objective of this study was to quantify actual evapotranspiration (ETa) and to develop crop coefficients (Kc) for four warm-season turfgrass species, namely 'Tifway' bermudagrass (Cynodon dactylon (L.) Pers. × Cynodon transvaalensis Burtt-Davy), 'Empire' zoysiagrass (Zoysia japonica Steud.), 'Floratam' St. Augustinegrass [Stenotaphrum secundatum (Walter) Kuntze], and 'Argentine' bahiagrass (Paspalum notatum Flugge). Crop coefficients were derived by dividing ETa (measured directly from lysimeter weight change over 24 to 72-h periods) by reference evapotranspiration (ETo) calculated from the ASCE-EWRI Standardized Method using onsite weather station data. Data were collected over three seasons from non-stressed, well-watered turf. For 17 of the 30 measurement periods, Kc did not differ among the 4 species, and on 24 of 30 periods zoysiagrass, bermudagrass, and St. Augustinegrass Kc did not differ from one another. A trend toward elevated Kc was observed in bahiagrass in years 2 and 3, particularly during early spring measurement periods. Kc values for all species fluctuated across seasons and years, peaking to ~0.8 during active growth periods when vapor pressure deficit and solar radiation were greatest, and declining to ~0.3 in late fall and winter. Root growth differences among the species appeared to have a stronger relationship to ET rates than did shoot growth rate. Results demonstrated that the commonly recommended warm-season turf coefficient of 0.6, while approximating overall average annual ETa, under-predicted ETa during active growth periods and over-predicted ETa during late fall and winter periods, when turf was slowly growing or quiescent. The results indicate seasonal refinement of Kc values may be needed to more effectively meet consumptive water use requirements of warm-season turfgrasses." |
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| Language: | English |
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| References: | 38 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Wherley, B., M. D. Dukes, S. Cathey, G. Miller, and T. Sinclair. 2015. Consumptive water use and crop coefficients for warm-season turfgrass species in the Southeastern United States. Agric. Water Manage. 156:p. 10-18. |
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| DOI: 10.1016/j.agwat.2015.03.020 |
| Web URL(s):
http://www.sciencedirect.com/science/article/pii/S0378377415001031
Last checked: 06/04/2015
Access conditions: Item is within a limited-access website |
| 
MSU catalog number: b2205878a |
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