In grass-legume pastures on soils containing less than adequate calcium and magnesium, the legume survives but the grass disappears. Why?
◦ Legumes tend to absorb divalent cations preferentially over monovalent cations.
◦ Legumes have lower root CEC than grasses.
◦ Legumes tend to absorb monovalent cations preferentially over divalent cations.
◦ Legumes have stronger growth capability than grasses.