UNBIAS THE EVALUATION OF SOIL HYSTERESIS EFFECTS ON TRANSPORT

The comparison of hysteretic with non-hysteretic soils should use an u nbiased single mean soil retention curve as a basis for comparison. Wh en such an unbiased comparison is made, the actual effect of hysteresi s can be shown to be insignificant in actual vertical soil water movem ent and transport over longer periods of time. This is in contrast to the implications of the conclusions drawn in the recent work of Vereec ken et al. as well as that of Russo et al.