Full TGIF Record # 170362
Item 1 of 1
DOI:10.21273/HORTSCI.45.10.1529
Publication Type:
i
Refereed
Author(s):Pannkuk, Tim R.; White, Richard H.; Steinke, Kurt; Aitkenhead-Peterson, Jacqueline A.; Chalmers, David R.; Thomas, James C.
Author Affiliation:Pannkuk: Department of Agricultural Sciences, Sam Houston State University, Huntsville; White, Aitkenhead-Peterson, Chalmers and Thomas: Department of Soil and Crop Sciences, Texas A&M University, College Station, TX; Steinke: Department of Crop and Soil Sciences, Michigan State University, East Lansing, MI
Title:Landscape coefficients for single- and mixed-species landscapes
Section:Soil management, fertilization, and irrigation
Other records with the "Soil management, fertilization, and irrigation" Section
Source:HortScience. Vol. 45, No. 10, October 2010, p. 1529-1533.
Publishing Information:Alexandria, VA: American Society for Horticultural Science
# of Pages:5
Keywords:TIC Keywords: Precipitation rate; Biomass determination; Crop coefficient; Evapotranspiration rate; Irrigation efficiency; Lysimetry; Native grasses; Soil moisture sensors; Species trials; Stenotaphrum secundatum; Stomatal conductance; Urban landscaping; Water conservation
Abstract/Contents:"Urban landscape irrigation is becoming increasingly important from a resource management point of view. Significant water use savings may be achieved if landscape irrigation is based on reference evapotranspiration (ETO). This study measured landscape crop coefficients (KL) for landscapes that are comprised of different vegetation types and irrigation water quality differences affecting KL. The KL was determined from the ratio of actual evapotranspiration to the ETO calculated from the modified Penman-Monteith equation. Irrigation quantity was based on 100% replacement of ETO. The KL values were determined for the following landscape vegetation on a fine sandy loam: St. Augustinegrass [Stenotaphrum secundatum (Walt.) Kuntze.], a single shumard red oak (Quercus shumardii Buckl.), St. Augustinegrass plus red oak, native grasses [Muhlenbergia capillaries (Lam.) Trin. and Schizachyrium scoparium (Michx.) Nash], and native grasses plus Red Oak in both College Station (CS) and San Antonio (SA), TX. Soil was systematically placed into lysimeters containing a drainage system and soil moisture probes. Lysimeters (1136 L) were placed in-ground in a randomized complete block design with three blocks. Soil moisture measurements were made at 0- to 20-, 20- to 40-, and 40- to 60-cm depths. The KL was determined after a rainfall or irrigation event for periods of 2 to 5 days. During the combined growing seasons of 2007 and 2008, KL in SA increased from early, to mid, to late season. In CS, the KL was unaffected by plant treatment or season. The St. Augustinegrass treatment KL seasonally ranged from 0.45 to 0.62 in SA. In CS, soil sodium accumulation caused decreased KL. These results of KL for mixed-species landscapes on non-sodic sites trend toward seasonal values of 0.5 to 0.7 for irrigation decisions in southern Texas. Landscape coefficients can be used as a tool in irrigation decision-making, which could contribute to water savings in amenity landscapes."
Language:English
References:34
See Also:See also related abstract, "Landscape coefficients of newly planted mixed- and single- species urban landscapes" 2008 Joint Annual Meeting: [Abstracts][GSA/SSSA/ASA/CSSA/GCAGS/HGS], 2008, [45170] R=145192 R=145192
Note:Figures
Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Pannkuk, T. R., R. H. White, K. Steinke, J. A. Aitkenhead-Peterson, D. R. Chalmers, and J. C. Thomas. 2010. Landscape coefficients for single- and mixed-species landscapes. HortScience. 45(10):p. 1529-1533.
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DOI: 10.21273/HORTSCI.45.10.1529
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