Comparison of Infiltration Measuring Methods for Surface Irrigation

Abstract

Several methods for measuring the rate of infiltration in a volcanic ash soil are compared on the basis of field measurements. Methods that use stagnant water give lower values of soil infiltration rate than those that use flowing water. The performances of the Kostiakov and the modified Kostiakov infiltration equations are analyzed for seven methods. These equations closely match field data collected with each technique used. Functional relationships among the infiltration rate equations are also obtained for each method of infiltration.