The Influence of Organic Matter on Phosphorus Fixation in Soils from the Eastern Flank of Mount Cameroon

Kenneth Mbene; Aaron Suh Tening; Cheo Emmanuel Suh; Norbert Nkafu Fomenky

doi:10.52589/AJENSR-IZWSPOKL

The Influence of Organic Matter on Phosphorus Fixation in Soils from the Eastern Flank of Mount Cameroon | AB Journals

The Influence of Organic Matter on Phosphorus Fixation in Soils from the Eastern Flank of Mount Cameroon

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African Journal of Environment and Natural Science Research

Vol. 6Issue 32023pp. 1–22Published 23 August 2023

DOI 10.52589/AJENSR-IZWSPOKL

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Abstract:

The maximum phosphate fixation (KF) and phosphorus sorption capacity (PSC) of soil samples collected from the surface and sub-surface horizons of five volcanic soil profiles from the eastern flank of Mount Cameroon were investigated before and after organic matter removal. The aim of this research was to investigate the influence of soil organic matter (OM) on phosphorus (P) fixation. The removal of soil OM from the soil samples was accomplished by the use of sodium hypochlorite. Phosphorus fixation studies were performed on the treated and untreated soil samples using calcium chloride as the background electrolyte. Fixation data were interpreted with Freundlich adsorption isotherm. The results indicated that the removal of OM had an influence on both KF and PSC. Removal of soil OM decreased PSC and increased KF for all soils. The inhibition of aluminium oxide and the reduction of soil surface area after the removal of OM were the justifications for the increase in P fixation.

Keywords:Phosphorus fixation Freundlich isotherm organic matter removal volcanic soils Mount Cameroon.

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The Influence of Organic Matter on Phosphorus Fixation in Soils from the Eastern Flank of Mount Cameroon