The Effects of Parent Materials and Cultivation on the Nutrient Levels of Three Kenya Soils

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Date
1966
Authors
Lehrer,P. L.
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Abstract
It is the purpose of this paper to investigate the effects of two factors of soil formation in so far as they are related to the nutrient levels of some Kenya soils: culture, as expressed by cultivation practices, and parent materials. The inclusion of culture as a true factor will, admittedly, be questioned by some soils geographers. However, if it is agreed that soil need not necessarily be defined as a natural occurring body, then a sixth item-culture-may, at times, be recognized as a legitimate factor of soil formation. To include culture as such a factor involves the identification of soil as a dynamic system which is continually being formed, not a static entity which is only being altered from its so-called natural state. The emphasis placed upon these two factors does not imply, of course, that the others are of little significance. However, it does suggest that the most suitable farming areas of East Africa, having been cultivated almost continuously for many years, are characterized by an edaphic geographical Landscape in which the parent materials and culture are factors of prime importance
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East African Agricultural And Forestry Journal, XXXII (No 1), p. 31-33