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Fig. 3. Measured cumulative infiltration and water retention data and corresponding two parameter optimized curves for the subsoil no-tillage and native pasture plots (Table 2). Error bars represent 95% confidence limits for the mean water content from soil cores sampled at the 1- to 4- and 6- to 9-cm depth increments in the native pasture plots and 11- to 14- and 15- to 19-cm in the no-tillage plots. The dotted line in no-tillage graphs represents the fitted curves obtained by fitting only the VGM constitutive relationships to the entire infiltration curve at all supply pressure heads (see section, Optimization of K(h) Near Saturation Using Multiple Tension Infiltration Data).
