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This study was carried out in order to characterize some selected local geological materials so as to prove their potential use for crop production. For this purpose, two types of volcanic breccias, volcanic ash and marl from West Cameroon region were selected for chemical characterization. These chemical analyses were done in order to determine total concentrations, extractible fractions, the readily available fractions and water-soluble fractions of nutrients. The results showed that all materials tested were alkaline to neutral (pH = 9.04 to 6.79), with significant difference (p Keywords : Agrogeological materials, Cameroon, macronutrients, micronutrients, chemical extraction. International Journal of Biological and Chemical Sciences Vol. 2 (1) 2008 pp. 21-32

Some chemical characteristics of selected geological materials in Cameroon (Central Africa) and their potential use for crop production.