Full TGIF Record # 69831
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Author(s):Slack, D. C.; Kopec, D. M.; Brown, P. W.; Matthias, A. M.
Author Affiliation:Slack: Professor, Agricultural and Biosystems Engineering; Kopec: Associate Extension Specialist, Plant Sciences; Brown: Associate Extension Specialist, Soil and Water Sciences; and Matthias: Associate Professor, Soil and Water Science, University of Arizona
Title:Evaluation and comparison of crop water stress index models for irrigation scheduling of bermuda grass turf
Source:1991 Turfgrass and Ornamentals Research Summary[Arizona]. 1991, p. 47-50.
# of Pages:4
Publishing Information:Tucson, AZ: University of Arizona
Keywords:TIC Keywords: Irrigation scheduling; Water stress; Canopy; Temperatures; Cynodon dactylon; Models; Vapor pressure; Solar radiation; Mathematical equations; Crop water stress index; Irrigation scheduling indices
Abstract/Contents:"The remote sensing of turfgrass canopy temperatures was evaluated in order to investigate the potential development of a crop water stress index for bermudagrass turf. An empirical model, based on vapor pressure deficit, was unseccessful for use, since it proved to be highly correlated with solar radiation. An additional empirical model was developed, which included vapor pressure deficit and solar radiation. This second model was more environmentally stable, but on occasion violated the conceptual and theoretical limits of the mathematical model. Two additional models were developed using a formulation of the vertical energy balance equation. Using an aerodynamic resistance from fully stressed turf of 20 s/m, and an unstressed canopy resistance of 72 s/m, a stable model was devised for bermudagrass turf mowed at 3-4 cm."
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Slack, D. C., D. M. Kopec, P. W. Brown, and A. M. Matthias. 1991. Evaluation and comparison of crop water stress index models for irrigation scheduling of bermuda grass turf. Turfgrass Landscape Urban IPM Res. Summ. p. 47-50.
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