Fig. 8. Calculated fluxes of Ca²⁺, K⁺, Na⁺, Mg²⁺, Cl^-, and SO^2-₄ in the Bt horizons. Values are based on average concentrations and modeled soil water flux. Errors bars represent standard errors associated with averge concentrations only. AMB = ambient, no treatment; WO = WET treatment, placed in the open away from drip points; DO = DRY treatment, placed between troughs; WT = WET treatment, placed near drip points; DT = DRY treatment, placed beneath troughs; DRY-Avg = area-weighted average fluxes in the DRY treatment.