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International Journal of Agricultural Research
  Year: 2014 | Volume: 9 | Issue: 4 | Page No.: 187-199
DOI: 10.3923/ijar.2014.187.199
 
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Pedological Study of Soils Developed on Biotite-Hornblende-Gneiss in Akamkpa Local Government Area of Cross River State, Nigeria
E.E. Aki, I.E. Esu and A.U. Akpan-Idiok

Abstract:
Morphological, physicochemical and mineralogical properties of soils derived from Biotite-Hornblende-Gneiss of Akamkpa, Cross River State, Nigeria were studied with a view to classifying the soil taxonomically, assessing their potentials and suggesting appropriate management strategies. Three profiles were dug on the landscapes of Nsan, Okomita and Old Netim. The micro-morphological properties of soil colour, soil structure, soil consistence, drainage and root abundance were determined in the field. The soils were characterized as follows: Deep profiles (>100 cm) with texture of gravelly sandy clay loam; hues of 10-5 YR; structure of subangular peds with sticky consistence (wet); bulk density values of 0.9-1.3 mg m-3; total porosity of 52.6-64.7%; silt-clay ratios of 0.4-1. Others were soil reaction (pH 4.4-5.1) H2O; organic carbon (0.8-14.56 g kg-1); total nitrogen (0.56-1.40 g kg-1); ECEC (1.46-4.40 cmol kg-1); CEC (3.30-6.00 cmol kg-1); available P (2.70-17.56 mg kg-1); base saturation (45-47%) and minerals such as quartz (81.26%), kaolinite (11.97%) and microcline (6.77%). According to the criteria of the USDA Soil Taxonomy, the soils were classified as loamy skeletal, mixed isohyperthermic typic kandiudults. Equivalent FAO-World Reference Base for Soil Resources of the soils was Dystric Acrisol. Pedogenetic process of elluviation-illuviation reflecting the weathering process has been occurring in the soils under the humid tropical influence. The soils can be managed by planting acid tolerant crops liming and adopting appropriate cultural practices.
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How to cite this article:

E.E. Aki, I.E. Esu and A.U. Akpan-Idiok, 2014. Pedological Study of Soils Developed on Biotite-Hornblende-Gneiss in Akamkpa Local Government Area of Cross River State, Nigeria. International Journal of Agricultural Research, 9: 187-199.

DOI: 10.3923/ijar.2014.187.199

URL: https://scialert.net/abstract/?doi=ijar.2014.187.199

 
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