Abstract
Soil landscape relationship is an essential tool for evaluating soil development. This study was carried out to evaluate soil development on an erosional land- scape of the Nigerian guinea savanna. Field studies were carried out by augering to a depth of 105 cm and by studying soil profiles along gully walls and stream channels in selected locations. Profile description and soil sampling were done following guidelines in the soil survey manual. Standard laboratory procedures were employed in analysis of soil physical and chemical properties. Soils of the area have developed from basement complex rocks under a tropical continental climate. Ongoing soil erosion in the area range from sheet to gully and stream bank erosion. Soil types identified on the landscape were Entisols on summit to upper footslope slope positions, whereas Inceptisols were observed on middle to lower footslope positions. Soils productivity index ranged from less than 0.10 to between 0.11 to 0.30 on Entisols and Inceptisols respectively. A horizons were poorly developed as indicated by the low profile darkness index and have very high soil erodibility index (> 0.04 (t.ha.h)/(MJ.mm)). The parent materials cou- pled with leaching and erosional processes have significantly influenced the fer- tility and productivity of the soils.
Keywords:
channels in selected locations. profile description and soil sampling were done
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