Model of boron movement in soils

A model to predict B transport in calcareous soils is presented. The model considers one-dimensional, non-steady-state soil water flow, convective-dispersive solute transport of both noninteracting salts (ie Cl) and B. The model accurately simulated B leaching from columns of B-contaminated soils under saturated and steady-state water flow conditions, and under conditions of transient water flow and transient B concentrations. Model predictions were also compared with evolving soil soluble-B profiles determined in a field study (5-7 yr) with repeated irrigation with saline, B-containing waters. Computed results of the B accumulation in the upper portion of the soil profile, and of the B front, were in good agreement with measured data. -from Authors