ABSTRACT

Water transfer, in vapour phase, was measured using three soil fractions at the same bulk density. The data were obtained from a transient desorption experiment conducted at 20°C. Analysis of water content distribution curves showed that soil aggregation had no effect on desorption flux and drying depth. Calculated water diffusivities as a function of water content suggest that tortuous factor does not influence water vapour movement in dry range of soils.