Evapotranspiration of Small Conifers
Publication: Journal of Irrigation and Drainage Engineering
Volume 111, Issue 4
Abstract
Three lysimeters were established containing different sized Scotch pines (P. sylvestris), and the consumptive water use of each tree was monitored during the 1982 and 1983 growing seasons near Logan, UT. Weather data including maximum, mean, and minimum daily temperatures, solar radiation, and daily precipitation were collected. Consumptive use data of the first season were of limited use due to the transplanting stress experienced by the trees. The results of the second season were consistent with the usual water use of irrigated crops. Mean monthly crop coefficients were calculated based on the modified Blaney‐Criddle and the Jensen‐Haise methods, assuming water was extracted from only the crown projection area of the tree. A seasonal Blaney‐ Criddle crop coefficient was estimated to be 1.22. The growing season was long, and the crop coefficient (Blaney‐Criddle) during the winter at this site may be as high as 0.85. An equation was developed to find the composite crop coefficient for conifer tree farms relating tree size, tree spacing, and type of ground cover.
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References
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Information & Authors
Information
Published In
Journal of Irrigation and Drainage Engineering
Volume 111 • Issue 4 • December 1985
Pages: 341 - 351
Copyright
Copyright © 1985 ASCE.
History
Published online: Dec 1, 1985
Published in print: Dec 1985
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