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The moisture equivalent of heavy soils. II

Published online by Cambridge University Press:  27 March 2009

A. F Joseph
A. F Joseph
Affiliation:
(Wellcome Tropical Research Laboratories, Khartoum.)
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Extract

1. The moisture equivalent of pure clay preparations varies with (a) the chemical composition, (b) the method of separation if centrifuged, (c) the replaceable bases.

2. The imbibitional water content also shows a close connection with the above variables.

3. Good additive relationships can only be obtained from series of soils of the same nature and in some cases, if taken at the same depth. This is, at any rate in part, due to differences existing in composition and properties between clay separated from soils and subsoils.

4. Pure silt fractions from different soils showed marked differences in their chemical composition and moisture equivalent.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 17 , Issue 1 , January 1927 , pp. 12 - 20
Copyright
Copyright © Cambridge University Press 1927

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References

REFERENCES

(1)Joseph, A. F. and Martin, F. J. (1923). The Moisture Equivalent of Heavy Soils. Journ. Agric. Sci. 13, 49.CrossRefGoogle Scholar
(2)Joseph, A. F. (1925). Clays as Soil Colloids. Soil Science, 20, 89.CrossRefGoogle Scholar
(3)Joseph, A. F. and Hancock, J. S. (1924). The Composition and Properties of Clay. Trans. Chem. Soc. 125, 1888.CrossRefGoogle Scholar
(4)Fisher, E. A. (1924). Observations on Imbibitional Soil Moisture. Journ. Agric. Sci. 14, 204.CrossRefGoogle Scholar
(5)Bradfield, R. (1923). The Chemical Nature of a Colloidal Clay. Missouri Agricultural Experiment Station Research Bulletin, 60, page 16.Google Scholar
(6)Middleton, H. E. (1920). The Moisture Equivalent in Relation to the Mechanical Analysis of Soils. Soil Science, 9, 160.CrossRefGoogle Scholar