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Degradation and conservation of soil of tropical Africa: origin and extension of laterites and of ferruginous shell: struggle against sterilization of African soil



Degradation and conservation of soil of tropical Africa: origin and extension of laterites and of ferruginous shell: struggle against sterilization of African soil



Rev. Int. Bot. Appl 28: 49-66



Tropical African soils are mainly latentic and may be young, mature or degraded. The formation of a laterite layer requires heavy rainfall alternating with hot dry seasons. In extreme instances laterite loses all its vegetation, and the mineral components Fe and Al but not SiO2 lie at the surface forming the ferruginous shell in which all cultivation is impossible.

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