Charles A. Igwe

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Soil aggregate stability influences a wide range of physical and biogeochemical processes in the agricultural and natural environments, including soil erosion [3]. The relative prepon‐ derance of aggregates of various sizes in the soil and their stability to external forces are, therefore, an issue of major concern to soil scientists. By definition, an(More)
Although the West African inland valleys are characteristically wet all-year-round, their hydrological conditions are known to be site-specific and may differ markedly between the rainy and the dry seasons. Information on their physical properties would be useful for proper water management under the sawah rice culture and for planning dry season cropping.(More)
Failures in agricultural development in parts of West Africa may have been caused by the inability of the farmers to develop the abundant inland valleys for cultivation of such crops like rice, using appropriate water management systems. An inland valley in southeastern Nigeria was used to evaluate the influence of sawah and non-sawah water management using(More)
The agricultural potentials of the floodplain soils of river Niger have been less exploited due to lack of information on their chemical and mineralogical characteristics. We studied five soil profiles within the floodplain to determine the levels of plant nutrients and relate them to their clay mineralogy and total element. The soils flooded for eight(More)
It is increasingly known that factors other than legume-fixed nitrogen contribute to rotation benefit (yield advantage of legume/cereal over cereal/cereal). The contributions of nitrogen and such other factors were quantified to guide soil fertility management in legume/cereal systems. Under greenhouse conditions, the effects of returning first crop’s(More)
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