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Some observations on the mechanism of phosphorus fixation in some soils of British Guiana

Published online by Cambridge University Press:  27 March 2009

Harry Paul
Harry Paul
Affiliation:
Department Of Agriculture, British Guiana
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Extract

A study has been made of the distribution of the various fractions of phosphorus in the Blairmont clay soils. Nearly three-fifths of the total phosphorus is present in the organic and inorganic alkali-soluble forms.

The organic alkali-soluble phosphorus and the exchangeable phosphorus vary in direct relation to cane production and to phosphorus content of the juice. The Truog phosphorus values are nil for all three soils and do not give a satisfactory indication of the phosphorus-supplying ability of the soils.

The soils have a high anion exchange capacity (23· mmol. of phosphorus per 100 g. of soil). It is indicated that the high fixing power of these soils for phosphorus is largely a mechanism of anion exchange reactions.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 39 , Issue 3 , July 1949 , pp. 249 - 253
Copyright
Copyright © Cambridge University Press 1949

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References

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