The influence of parent materials on some characteristics of the soils of a semi-arid catchment (175-180)
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This study was conducted to examine the influence of parent materials on some characters of Mukokodo catchment in Laikipia District, Kenya. The study area is in a semi-arid region (agro climatic zone-V) and occupies 252 hectares. Average annual rainfall and temperature are 563 mm and 18-20°C respectively (Sombroek et al., 1982). The catchment is covered by metamorphic rocks of pre-cambrian age. The main rocks are the granitic gneisses which were formed as a result of metamorphism.