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Laboratory Determination of Infiltration Rates of Disturbed Soil Samples¹

ABSTRACT

A procedure for determining infiltration rates of disturbed soil samples in the laboratory, using simulated rainfall, is described. Data showing the relation of laboratory infiltration rates to those measured on cultivated areas in the field are presented. Comparisons of runoff from natural storms with infiltration rates determined in the laboratory and the field are given for several soil types. The laboratory infiltrometer, the type F field infiltrometer, and infiltration during natural storms placed the different soils in the same order. The usefulness of the laboratory infiltrometer for evaluating the effects of rotations, chemical soil conditioners, and inherent soil properties on infiltration in the surface soil of clean-cultivated areas is briefly discussed.

Contribution from the Department of Agronomy, South Carolina Agr. Exp. Sta., Clemson, S. C., and the Soil and Water Conservation Research Branch, A.R.S., U.S.D.A. South Carolina Agr. Exp. Sta. Technical Contribution No. 231. This investigation was partially supported by a grant from the Smith-Douglass Co., Inc., Wilmington, N. C.

² Soil Scientists.

Received for publication March 3, 1955.