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The Potassium Status of Soils in the Savanna Zone of Nigeria

Published online by Cambridge University Press:  03 October 2008

A. Wild
A. Wild
Affiliation:
Institute for Agricultural Research, Ahmadu Bello University, Samaru, Nigeria
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Summary

Thirty one soils from the Savanna Zone of Nigeria were low in exchangeable potassium, ΔK°, and ΔK°° and had very low potassium buffer capacities. The soils were low in clay, which was kaolinitic. Two soils high in 2:1 layer clay minerals contained higher quantities of labile potassium. Total potassium varied with parent material. Release of non-exchangeable potassium was low. After cropping, wet/dry cycles released exchangeable potassium. Potassium deficiency is expected to occur commonly with intensive cropping in the field.

Type
Research Article
Information
Experimental Agriculture , Volume 7 , Issue 3 , July 1971 , pp. 257 - 270
Copyright
Copyright © Cambridge University Press 1971

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