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International Journal of Soil Science
  Year: 2007 | Volume: 2 | Issue: 3 | Page No.: 182-189
DOI: 10.3923/ijss.2007.182.189
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Lithosequential Variability in Phosphorus (P) Forms in the Humid Tropics

E.U. Onweremadu

A field study was conducted in the months of March, April and May 2006 to investigate variability in P-forms in soils derived from 4 different parent materials, namely coastal plain sands, shale, basement complex rocks and a mixture of cretaceous sandstones and shales. A free survey approach was used in setting soil profile pits. Soil samples were prepared for Laboratory analysis. Variability was established in soil groups using Coefficient of Variation (CV) while relationship existing between P-form and soil properties was ascertained by correlation analysis. Results indicate that occluded P was the most abundant P form and this is environmentally unhealthy. Iron-P and aluminum-P predominated over calcium P, Most P-forms showed slight to moderate variation (CV≤50%). Clay content had significant correlation (p<0.05) with P-forms hence can be used as a reliable predictor of variability of P-forms.
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  •    Effect of Land Use Types on Vulnerability Potential and Degradation Rate of Soils of Similar Lithology in a Tropical Soil of Owerri, Southeastern Nigeria
How to cite this article:

E.U. Onweremadu , 2007. Lithosequential Variability in Phosphorus (P) Forms in the Humid Tropics. International Journal of Soil Science, 2: 182-189.

DOI: 10.3923/ijss.2007.182.189






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