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Solute Transport Through Soil With Nonuniform Water Content¹

ABSTRACT

An approximate analytical solution is presented for steady flow of salt through soil with a nonuniform distribution of the water content. The solution is in good agreement with a numerical computer solution, provided by the CSMP simulation language. Both solutions also agree with the analytical solution for soils with a uniform distribution of the water content. It is shown that effluent curves from soil profiles, with the same average water content and leached at the same steady rate, are basically the same and thus independent of the variation of the water content in such profiles.

¹ Journal article no. 615, Agric. Exp. Stn., New Mexico State Univ., Las Cruces, NM 88003. The work upon which this report was based was supported in part by funds obtained from the "Interministeriële Commissie voor Wetenschapsbeleid", Brussels, the Commission for Educational Exchange between the U.S., Belgium, and Luxembourg, the Scientific Commity of NATO, Belgium, and EPA grant no. S-803156.

² Graduate Student and Professor, Dep. of Agron., New Mexico State Univ., Las Cruces, NM 88003.

Received for publication December 10, 1976. Accepted for publication August 12, 1977.

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