As part of a study of recession farming on the 'fadama' lands on a segment of the Komadugu-Yobe floodplain, a survey was carried out to investigate the local farmers' perception of soil types and management practices. The farmers are clearly aware of the differences in soil type on the fadama and they possess unique skills in managing their farm lands. The farmers classifl fadama soils for recession farming by assessing soil texture and soil drainage conditions by feel and observation. Integrating such local knowledge into soil surveys will lead to better practical definition ofmapping units and give soil names that have more meaning for the farmers.

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Abstract:A laboratory study on the influence of modified proctor (MP)

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Organic materials, the combined products of different animal and plant sources, play vital roles in agricultural crop production systems. They are more environmental friendly than inorganic fertilizers and added many values to soil and crop production, economically. They sustain and restore soil inherent properties, enhance soil biological activities and potentially increase crop yields, which are safe for human consumption (that is, free from chemicals). This paper aims to discuss the values of organic materials as fertilizers in crop production systems of northern Nigeria. This is hoping to provide awareness for the possibility of the implementation of bioorganic fertilizers industries in northern Nigeria for permanent and economic sustainable crop production.