Research Article
Sep 1972
Irrigation through Subsurface Drains
Publication: Journal of the Irrigation and Drainage Division
Volume 98, Issue 3
Abstract
Field experiments were conducted to determine the feasibility of subirrigation on a Lumbee sandy loam soil. Results for the water table response to tile line subirrigation with tile spacings at 7.5 m, 15 m, and 30 m are presented and compared to predictions from theoretical design equations. The results indicated that water could be supplied to the root zone at a rate more than sufficient to supply plant needs for the 7.5 m and 15 m, but not for the 30 m spacing. Theoretical calculations showed that, in this soil, a water table depth range of 30 cm from directly over the tile lines to midway between tile lines could be maintained with a spacing of 19.2 m. An equation was derived for the upward movement of the water table during the early stages of subirrigation. Comparisons with the results of field tests showed that, except for an initial lag period, the equation can be used to accurately predict the water table rise midway between tile lines.
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Information & Authors
Information
Published In
Journal of the Irrigation and Drainage Division
Volume 98 • Issue 3 • September 1972
Pages: 363 - 373
Copyright
© 1972 American Society of Civil Engineers.
History
Published in print: Sep 1972
Published online: Feb 11, 2021
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Authors
Affiliations
R. Wayne Skaggs
Asst. Prof., Dept. of Biological and Agricultural Engrg. and Soil Science, North Carolina State Univ., Raleigh, N.C.
George J. Kriz
Assoc. Dept. Head, Dept. of Biological and Agricultural Engrg. North Carolina state Univ., Raleigh, N.C.
Reynolds Bernal, AM.ASCE
Instructor, Facultod de Agronomia, Universidad Nacional de Colombia, Bogota, D.E. Colombia, South America; formerly Grad. Student, Dept. of Biological and Agricultural Engrg., North Carolina State Univ., Raleigh, N.C.
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