Hostname: page-component-77c89778f8-m42fx Total loading time: 0 Render date: 2024-07-22T22:06:08.575Z Has data issue: false hasContentIssue false
  • English
  • Français

The redistribution of a surface layer of solute during the drainage of a soil profile to field capacity

Published online by Cambridge University Press:  27 March 2009

G. D. Towner
G. D. Towner
Affiliation:
Rothamsted Experimental Station, Harpenden, Herts, AL5 2JQ
Get access Rights & Permissions [Opens in a new window]

Summary

An approximate analytical method derived by Wilson & Gelhar (1981) is a powerful and flexible one for calculating solute distribution profiles developing under steady state and transient water flow conditions. Solute concentration profiles developing from an initial deposition in the surface layer, as the soil profile returns to field capacity, have been calculated using the method for idealized representations of the two principal forms of water redistribution.

The profiles depend very strongly on the mode of redistribution of the water. However, the small spread of the final profiles (at field capacity) across the range of water redistribution types examined suggest that, for agricultural application, it might be accurate enough to use a simplified representation of the actual redistribution rather than the correct, and inevitably more complicated, water flows and distribution.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 103 , Issue 1 , August 1984 , pp. 229 - 238
Copyright
Copyright © Cambridge University Press 1984

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Bond, W. J. & Collis-George, N. (1981). Ponded infiltration into simple soil systems. 1. The saturation and transition zones in the moisture content profiles. Soil Science 131, 202–209.CrossRefGoogle Scholar
Cameron, K. C. & Wild, A. (1982). Prediction of solute leaching under field conditions: an appraisal of three methods. Journal of Soil Science 33, 659–669.CrossRefGoogle Scholar
Chaudhahi, N. M. (1971). An improved numerical technique for solving multi-dimensional miscible displacement equations. Society of Petroleum Engineers Journal 11, 277–284.CrossRefGoogle Scholar
De Smedt, F. & Wierenga, P. J. (1978 a). Solute transport through soil with non-uniform water content. Soil Science Society of America Journal 42, 7–10.CrossRefGoogle Scholar
De Smedt, F. & Wierenga, P. J. (1978 b). Approximate analytical solutions for solute flow during infiltration and redistribution. Soil Science Society of America Journal 42, 407–412.CrossRefGoogle Scholar
Rose, C. W., Chichester, F. W., Williams, J. R. & Ritchie, J. T. (1982). Application of an approximate analytic method of computing solute profiles with dispersion in soils. Journal of Environmental Quality 11, 151–155.CrossRefGoogle Scholar
Rubin, J. (1967). Numerical method for analysing hysteresis-affected post-infiltration redistribution of soil moisture. Soil Science Society of America Proceedings 31, 13–20.CrossRefGoogle Scholar
Towner, G. D. (1983). A theoretical examination of Burns' (1975) equation for predicting the leaching of nitrate fertilizer applied to a soil surface. Journal of Agricultural Science, Cambridge 100, 293–298.CrossRefGoogle Scholar
Wierenga, P. J. (1977). Solute distribution profiles computed with steady-state and transient water movement models. Soil Science Society of America Journal 41, 1050–1055.CrossRefGoogle Scholar
Wilson, J. L. & Gelhar, L. W. (1981). Analysis of longitudinal dispersion of unsaturated flow. 1. The analytical method. Water Resources Research 17, 122–130.CrossRefGoogle Scholar
Youngs, E. G. & Poulovassilis, A. (1976). The diffent forms of moisture profile development during the redistribution of soil water after infiltration. Water Resources Research 12, 1007–1012.CrossRefGoogle Scholar