Fig. 1 Relative comparison of the Pearson correlation coefficients between the steady infiltration rates at different potentials (i_-0.24 to i₀) and the mass fractions of clay (m_c), silt (m_si), and sand (m_s) separates, field-estimated macroporosity (_macro), very fine porosity at root–soil interface (_root), and laboratory-determined total soil porosity (_total)