The chemistry of potassium in soil is elusive, as many factors govern release of the element from insoluble materials and its subsequent availability to plants. Advances have come with a better understanding of the behaviour of clay minerals, the finest particles of which have a major role. Potassium status and its measurement are discussed on the basis of equilibrium exchange reactions with other ions in the soil solution.
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References
1.
ArnoldP. W. (1960). J. Sci. Fd Agric., 11, 285.
2.
ArnoldP. W., and CloseB. M. (1961). J. agric. Sci., 57, 295.
3.
ArnoldP. W. (1962). Proc. Fertil. Soc., No. 72, 25.
4.
BarshadI. (1954). Soil Sci., 77, 463.
5.
BassettW. A. (1960). Bull. geol. Soc. Amer., 71, 449.
6.
BurdJ. S., and MartinJ. C. (1923). J. agric. Sci., 13, 265.
7.
DemumbrumL. E. (1958). Soil Sci., 86, 276.
8.
DemumbrumL. E. (1959). Proc. Soil Sci. Soc. Amer., 23, 192.
9.
DyalR. S., and HendricksS. B. (1950). Soil Sci., 69, 421.
10.
GrimR. E., BrayR. H., and BradleyW. F. (1937). Amer. Min., 22, 813.
11.
JacksonM. L., HseungY., CoreyR. B., EvansE. J., and Vanden HeuvelR. C. (1952). Proc. Soil Sci. Soc. Amer., 16, 3.
12.
JohnsonL. J., and JeffriesC. D. (1957). Proc. Soil Sci. Soc. Amer., 21, 539.
13.
MatthewsB. C., and BeckettP. H. T. (1962). J. agric. Sci., 58, 59.
14.
MortlandM. M. (1961). Soil Sci., 91, 11.
15.
RichC. I., and ObenshainS. S. (1955). Proc. Soil Sci. Soc. Amer., 19, 334.
