Agroforestry Drainage Management Model. II: Field Water Flow
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VIEW THE ORIGINAL ARTICLEPublication: Journal of Irrigation and Drainage Engineering
Volume 120, Issue 2
Abstract
Part I of this paper presented a two‐dimensional dynamic finite‐element model of fluid flow and solute transport in root‐soil profiles with different root‐uptake mechanisms. Field data collected in 1989 were used to validate the model. The present paper presents further validation and application of the numerical solution of Richard's equation against the field data collected from an agroforestry demonstration site for sustainable agriculture during the 1990 irrigation season. The site is tile‐drained, isolated from the surroundings by interceptor drains, planted with six‐year‐old Eucalyptus camaldulensis (red gum) over an area of shallow ground water, and irrigated by a furrow system. Computer simulations were made for 220 dayas to evaluate the irrigation management. In comparing the measured with the numerically predicted volumetric moisture content in the soil profile and pressure head, the values were well correlated in space and time . Therefore, the model can be used to provide management guidelines for subsurface drainage in agroforestry systems.
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Published In
Journal of Irrigation and Drainage Engineering
Volume 120 • Issue 2 • March 1994
Pages: 382 - 396
Copyright
Copyright © 1994 American Society of Civil Engineers.
History
Received: May 24, 1993
Published online: Mar 1, 1994
Published in print: Mar 1994
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