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| Publication Type:
| Refereed |
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| Author(s): | Fry, J.;
Wiest, S.;
Qian, Y.;
Upham, W. |
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| Author Affiliation: | Department of Horticulture, Forestry, and Recreation Research, Kansas State University, Manhattan, Kansas USA 66506 |
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| Title: | Evaluation of empirical models for estimating turfgrass water use |
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| Section: | Physiology and ecology: Contributed papers
Other records with the "Physiology and ecology: Contributed papers" Section
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| Meeting Info.: | Sydney, Australia: 1997 |
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| Source: | International Turfgrass Society Research Journal. Vol. 8, No. Part 2, 1997, p. 1268-1273. |
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| Publishing Information: | Blacksburg, VA: International Turfgrass Society |
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| # of Pages: | 6 |
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| Keywords: | TIC Keywords: Evapotranspiration; Models; Comparisons; Cynodon; Bouteloua dactyloides; Zoysia japonica; Festuca arundinacea; Lolium perenne; Irrigation scheduling
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| Abstract/Contents: | "Empirical models that generate turfgrass evapotranspiration (ET) estimates are commonly used to guide irrigation, although a thorough evaluation of the accuracy of these models has not been carried out in the Midwestern USA. We evaluated seven models by comparing empirically-estimated ET with turfgrass ET measured using small lysimeters under well-watered conditions. The Doorenbos-Pruitt-Makkink (DOOR), FAO-Penman (FAOP), and Penman (PEN) models provided the best (RĀ² = 0.858 to 0.906) ET estimates for Cynodon dactylon (L.) Pers. x C. transvaalensis Burtt-Davy cv. Midlawn, Buchloe dactyloides (Nutt.) Engelm. cv. Prairie and Zoysia japonica Steud. cv. Meyer maintained at 4.5cm. The Blaney-Criddle (BC), DOOR, and PEN models provided the highest correlation coefficients for three tall fescue (Festuca arundinacea Schreb.) cultivars maintained at 6.4 or 7.6cm (RĀ² = 0.415 to 0.792). All models provided relatively poor (RĀ² = 0.087 to 0.525) ET estimates for Lolium perenne L. cv. Gator maintained at 1.2 cm.and Zoysia japonica cv. Meyer maintained at 2.5cm. |
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| Language: | English |
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| References: | 6 |
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| Note: | Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Fry, J., S. Wiest, Y. Qian, and W. Upham. 1997. Evaluation of empirical models for estimating turfgrass water use. Int. Turfgrass Soc. Res. J. 8(Part 2):p. 1268-1273. |
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