References
- Beckett , P. H. T. 1964a . Studies on soil potassium. I. Confirmation of the ratio law . J. Soil Sci. , 15 : 1
- Beckett , P. H. T. 1964b . II. immediate Q/1 relation of labile potassium in the soil . J. Soil. Sci. , 15 : 9
- Beckett , P. H. T. 1964c . K-Ca exchange equilibria in soils: Specific adsorption sites for K . Soil Sci. , 97 : 376
- Beckett , P. H. T. 1965 . The cation exchange equilibria of Ca and Mg . Soil Sci. , 100 : 118
- Beckett , P. H. T. and Nafady , M. H. 1967 . K-Ca exchange equilibria in soils. The location of nonspecific sites (Gapon) and specific sites . J. Soil. Sci. , 18 : 263
- Bolt , G. H. 1955 . Ion adsorption by clays . Soil Sci. , 79 : 267
- Bolt , G. H. 1963 . A study of the equilibria between three categories of potassium in an illic soil . Proc. Soil Sci. Soc. Amer. , 27 : 294
- Gapon , E. N. 1933 . Theory of exchange adsorption in soils . J. Gen. Chem. (USSR) , 3 : 144
- Lagerwerff , J. V. and Bolt , G. H. 1959 . Theoretical and experimental analysis of Gapon's equation for ion exchange . Soil Sci. , 87 : 217
- Lamm , C. G. 1971 . Det danske jordarkiv . Tidsskr. f. planteavl , (in press).
- Lamm , C. G. and Nafady , M. H. 1971 . Studies on soil potassium in Danish soils. The effect of some factors of the Q/1 relation . Acta Agric. Scand. , in press
- Nye , P. H. 1961 . Ion exchange equilibria involving aluminium . Proc. Soil Sci. Soc. Amer. , 25 : 14
- Schofield , R. K. 1947 . A ratio law governing the equilibrium of cations in the soil solution . Proc. 11th Intern. Congr. Appl. Chem. (London) , 3 : 257
- Schofield , R. K. and Taylor , A. W. 1955 . The measurement of soil pH . Proc. Soil Sci. Soc. Amer. , 19 : 164
- Van Schouwenburg , Ch. J. and Schuffelen , A. C. 1963 . Potassium exchange behaviour of an illite . Neth. J. Agric. Sci. , 11 : 13