Maximum Surface Storage Provided by Crop Residue
Publication: Journal of Irrigation and Drainage Engineering
Volume 120, Issue 2
Abstract
Small ponds created by crop residue serve to store water on upland areas. The present study is conducted to identify the maximum surface storage provided by crop residue. Equations for estimating surface storage are derived assuming that residue elements were oriented end to end, at uniform intervals, in a direction perpendicular to flow. Separate equations are developed for conditions where average slope was greater than or equal to residue cover, or less than residue cover. Both equations relate average surface‐storage depth to residue cover, residue diameter, and average slope. Data to test the reliability of the equations are obtained in a laboratory investigation. Artificial residue elements are glued onto a 1‐m2 test section positioned at slopes of 1%, 10%, or 20%. Four sizes of residue elements and three surface‐cover conditions are examined. Surface‐storage depth for each experimental condition is measured. Close agreement is found between predicted and measured surface‐storage values. Surface storage occurring under field conditions may be substantially less than the estimates obtained using the predictive equations.
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Information & Authors
Information
Published In
Journal of Irrigation and Drainage Engineering
Volume 120 • Issue 2 • March 1994
Pages: 440 - 449
Copyright
Copyright © 1994 American Society of Civil Engineers.
History
Received: May 26, 1993
Published online: Mar 1, 1994
Published in print: Mar 1994
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