Characterization and land capability evaluation of selected soil units in northern Cross River State, Nigeria
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Abstract
Some selected soils of Northern Cross River State within the guinea savanna zone of Nigeria, were surveyed, characterized and evaluated for its capability. The free soil survey method was used for this study. The study area was delineated into three (3) soil units based on soil homogeneity. The land capability evaluation for the study area placed the soils of mapping unit 1 under capability class III, sub class IIIw, unit 2 under capability class II, sub class 1If while soils of unit 3 were placed under capability class IV, sub-class IVrtg based on degree and severity of land limitations. The study recommended that productivity of soils of unit I, can be enhanced through
drainage and good water control mechanisms. Soils of unit 2 can be managed through appropriate application of lime, NPK fertilizers and manures. The soils of unit 3, adjudged incapable for a wide range of agronomic uses can
be restricted to pasture, ranching and forestry to reduce risk of deterioration due to erosion.
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