Hostname: page-component-cd9895bd7-gxg78 Total loading time: 0 Render date: 2024-12-28T02:40:40.537Z Has data issue: false hasContentIssue false
  • English
  • Français

Release of non-exchangeable potassium from some Rhodesian soils cropped with grass

Published online by Cambridge University Press:  27 March 2009

R. C. Salmon
R. C. Salmon
Affiliation:
Tobacco Research Board, Salisbury, Rhodesia
Get access Rights & Permissions [Opens in a new window]

Extract

1. Thirty Rhodesian soils were cropped with weeping love-grass (Eragrostis curvula) for up to 11 months in the glasshouse, the potassium released on cropping being compared with soil contents and that released on prolonged suspension in dilute CaCl2 or by reaction with H-exchange resin.

2. Love-grass produced up to 33 tons of dry matter and removed up to 700 lb. of K2O/acre, and releases of non-exchangeable potassium ranged from 3 to 2931b. K2O/acre. With some soils potassium uptake by love-grass (and K-release) was about 60% of that reported for perennial rye-grass, showing that different crops have differing abilities to use non-exchangeable potassium reserves.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 65 , Issue 1 , August 1965 , pp. 135 - 138
Copyright
Copyright © Cambridge University Press 1965

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Arnold, P. W. (1958). Nature, Lond., 188, 1594.CrossRefGoogle Scholar
Arnold, P. W. & Close, B. M. (1961). J. Agric. Sci. 57, 295.CrossRefGoogle Scholar
Chambers, W. E. (1953). J. Agric. Sci. 43, 473.CrossRefGoogle Scholar
Daulton, R. A. C. (1963). Proc. 3rd World Tobacco Sci. Congr. p. 181.Google Scholar
Linde, W. J. Van Der (1956). Nematologica, 1, 177.CrossRefGoogle Scholar
Maclean, A. J. (1961). Canad. J. Soil Sci. 41, 196.CrossRefGoogle Scholar
Maclean, A. J. & Brydon, J. E. (1963). Canad. J. Soil Sci. 43, 123.CrossRefGoogle Scholar
Matthews, B. C. & Beckett, P. H. T. (1962). J. Agric. Sci. 58, 59.CrossRefGoogle Scholar
Nye, P. H. (1963). J. Sci. Fd. Agric. 14, 277.CrossRefGoogle Scholar
Salmon, R. C. (1964). Rhod. J. Agric. Res. 2, 85.Google Scholar
Salmon, R. C. (1965a). In Science and Medicine in Central Africa, p. 467. Oxford: Pergamon.Google Scholar
Salmon, R. C. (1965a). Rhod. J. Agric. Res., 15.Google Scholar
Saunder, D. H. (1954b). Trans. 5th Int. Congr. Soil Sci. 3, 171.Google Scholar
Smith, J. A. & Matthews, B.C. (1957). Canad. J. Soil Sci. 37, 1.CrossRefGoogle Scholar
Stahlberg, S. (1959). Acta Agric. scand. 9, 362.Google Scholar