Movement of zinc sulphate in a calcium-saturated soil: cation exchange and precipitation of gypsum K. Harmsen; N. Strawer; M. de Graaf text Ind Repr.from: Neth.J.Agric.Sci,35(1987):295-313, Bibl.: p. 312-313 Repr.from: Neth.J.Agric.Sci,35(1987):295-313, Bibl.: p. 312-313 SOIL CHEMICOPHYISICAL PROPERTIES ZINC SULPHATE CALCIUM CATIONS