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Soil Fertility under Continuous Cultivation in Northern Nigeria

I. The Role of Organic Manures

Published online by Cambridge University Press:  03 October 2008

R. G. Heathcote
R. G. Heathcote
Affiliation:
Institute for Agricultural Research, Ahmadu Bello University, Samaru, Zaria, Nigeria
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Summary

Soil acidity, incipient potassium deficiency, and a deficiency of one or more trace elements were limiting factors in three trials of long-term soil fertility changes under continuous cultivation in the Sudan Savanna zone of Nigeria. The effectiveness of organic manures is explained largely or wholly in terms of these factors, since no evidence has yet been found to suggest that the addition of organic matter as such is of value.

Type
Research Article
Information
Experimental Agriculture , Volume 6 , Issue 3 , July 1970 , pp. 229 - 237
Copyright
Copyright © Cambridge University Press 1970

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References

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