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International Journal of Soil Science
  Year: 2011 | Volume: 6 | Issue: 3 | Page No.: 164-175
DOI: 10.3923/ijss.2011.164.175
 
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Soil Quality Modeling of a Highly Acidic Eutric-tropofluvent Soil

A.P. Uzoije and A.A. Onunkwo

Abstract:
This research aims at developing several regression models establishing the relationship between pH and other selected soil physiochemical properties, to predict the values of these selected properties in the polluted soils. The study took place at Umuagwo-Ohaji garri processing centre in three sampling pedons; A, B and C using the technique of stratified random sampling for sample collections of soil and monthly collection of the CME between May 2007 to September 2009. The three morphological land unit representing the pedons were linked with a transect before sampling. Pedon A is the background or the control unit, pedon B or the discharge point is the Cassava Mill Effluent (CME) receiving unit and pedon C is the down stream, 500 m away from pedon B. The study examined the CME and soil properties of the collected samples at 5 layers of 0-15, 15-30, 30-70, 70-100 and 100-150 cm, respectively and was determined using standard methods. The result showed high values of soil physiochemical properties (mainly the heavy metals) at pedon B and the value gradually declined down stream of pedon B and lowest was recorded in pedon A. Along the depth profile, virtually all the values of the soil properties increased with depth except %porosity which declined with depth. This suggests intense chemical illuviation within the pedons. The investigated soil properties were used to develop regression model between pH and other properties. PH relationship with heavy metals in pedons A and B showed positive linear relationships with their coefficient of linearity (R2) ranging between 0.70-0.92 while other soil physiochemical properties obeyed polynomial relationships at reasonably high coefficient of fitness. Polynomial models fitted the pH relationships virtually in all the selected physiochemical properties of pedon C. with the models; the values of the soil physiochemical properties in this circumstance could be assessed.
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How to cite this article:

A.P. Uzoije and A.A. Onunkwo, 2011. Soil Quality Modeling of a Highly Acidic Eutric-tropofluvent Soil. International Journal of Soil Science, 6: 164-175.

DOI: 10.3923/ijss.2011.164.175

URL: https://scialert.net/abstract/?doi=ijss.2011.164.175

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