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Studies in tropical soils. Increase of acidity with depth

Published online by Cambridge University Press:  27 March 2009

H. C. Doyne
H. C. Doyne
Affiliation:
(Department of Agriculture, Nigeria.)
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Extract

1. Increase of acidity with depth, is a common feature of Nigerian soils.

2. Examples and possible explanations are given for three types of acidity increase with depth. In the first, the greater acidity is confined to the depths immediately below the surface and is possibly dependent on a permanently undisturbed vegetation. In the second, the acidity continues to increase to a certain depth below which there is a regular decrease. This is more evident on mature soils, and may be dependent on a short but intense rainfall followed by a prolonged drought. In immature soils, derived from igneous acidic rocks under alternate wet and dry seasons, the acidity increases steadily with depth into the decaying rock mass.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 25 , Issue 2 , April 1935 , pp. 192 - 197
Copyright
Copyright © Cambridge University Press 1935

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References

REFERENCES

(1)Gracie, D. S. and Le PoerTrench, A. D. Trench, A. D.Soil conditions affecting coffee in Kenya. Bull. Dep. Agric. Kenya (1931), No. 7.Google Scholar
(2)Doyne, H. C. and Watson, W. A.J. agric. Sci. (1933), 33, 208.CrossRefGoogle Scholar
(3)Robinson, G. W.Soils, their origin, constitution and classification (1932), pp. 274–5. Murby.Google Scholar
(4)Mohr, E. C. J.Tropical soil forming processes and the development of tropical soils (1930). Translated by R. C. Pendleton, Coll. Agric. Univ. of Philippines.Google Scholar
(5)Kuhn, S.Z. Pfl-Ernähr. Düng. (1930), A, 15, 13.Google Scholar
(6)Schofield, R. K.J. agric. Sci. (1933), 33, 252.CrossRefGoogle Scholar
(7)Williams, R.J. agric. Sci. (1928), 18, 439 and (1929), 19, 589.CrossRefGoogle Scholar
(8)Doyne, H. C. and Glanville, R. R.Tropical Agriculture, Trin. (1933), 10, No. 5, p. 132.Google Scholar