Research Article
Mar 1980
Conserving Energy with Low-Pressure Center Pivots
Authors: James R. Gilley and Lloyd B. MielkeAuthor Affiliations
Publication: Journal of the Irrigation and Drainage Division
Volume 106, Issue 1
Abstract
Reduced-pressure, center-pivot irrigation systems offer the potential of applying irrigation water with significant energy savings. However, lowering the pressure of center-pivot systems may increase runoff and soil erosion, thereby reducing irrigation efficiency, decreasing uniformity of water application, and creating other operational problems. The future use of reduced-pressure irrigation systems depends upon solving these problems. Reductions in irrigation efficiency must be considered when determining the net energy savings from reduced pressure systems as a reduction in irrigation efficiency may negate the energy saved by pressure reduction, especially for systems with larger lifts. In some cases, soil type, topography, and cultural practices may preclude the use of reduced-pressure systems because of their higher application rates.
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Information
Published In
Journal of the Irrigation and Drainage Division
Volume 106 • Issue 1 • March 1980
Pages: 49 - 59
Copyright
© 1980 American Society of Civil Engineers.
History
Published in print: Mar 1980
Published online: Feb 11, 2021
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Authors
Affiliations
James R. Gilley
Assoc. Prof., Agricultural Engrg. Dept., Univ. of Nebraska, Lincoln, Neb.
Lloyd B. Mielke
Soil Scientist, U.S. Dept. of Agriculture, Sci. and Education Administration-Agricultural Research; also, Assoc. Prof., Agronomy Dept., Univ. of Nebraska, Lincoln, Neb.
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