Fig. 5. Comparison between the actual distribution of relative electrical conductivity (EC), TDR-measured relative bulk soil electrical conductivity ( EC_b), and the theoretical distribution of TDR-measured relative EC_b as a function of distance to the interface between the two half-cells at the beginning (t = 0 d) of the diffusion experiment (Method II) carried out at = 0.256 m³ m^-3.