Physical Properties, Potentials And Vulnerability Of The Soils Of Sombreiro Warri Deltaic Plain, Nigeria
Journal Title: IOSR Journal of Agriculture and Veterinary Science (IOSR-JAVS) - Year 2018, Vol 11, Issue 3
Abstract
This paper evaluates the potentials and vulnerability of the Sombreiro Warri Deltaic Plain soils using physical properties. A total of 52 genetic horizon soil samples were studied in twelve soil profiles located in Akabuka, Obite, Obagi, Omoku, Okwuzi, Aggah and Umuoru-Ndoni areas. The soils have predominantly Loamy sand and sandy loam textures on the surface (about 80% of all the studied locations). Sand content had a range of 220 – 850g/kg with a mean of 515g/kg. Clay content in the area varied from 140 – 580g/kg, with a very gradual increase with depth in few pedons. The highest clay content was observed in the Umuoru / Ndoni 2 profile where clay had a range of 470 - 580g/kg followed by Umuoru/Ndoni 1 profile with a range of 210 – 270g/kg and a mean of 245g/kg. The range in particle density for the soils was 2.10 – 2.66gcm-3 . The highest profile mean particle densities were 2.53, 2.50 and 2.43gcm-3 for Umuoru/Ndoni 2, Aggah 2 and Umuoru 1 respectively while the lowest mean values were Obite 1 (2.33), Akabuka 2 (2.33) and Obagi 1 (2.30gcm-3 ). About 50% of the soils had their particle density between 2.35 and 2.46gcm-3 . The lowest mean values for different pedons were obtained in Umuoro/Ndoni, Obiafu and Aggah pedons with 1.38, 1.42, 1.43 and 1.44gcm3 respectively while the highest relatively higher values of 1.61, 1.62 and 1.64gcm-3 were obtained in Obite 1, Obagi 1 and Obagi pedons respectively. Surface horizons generally had lower bulk density values in most of the pedons. Aggregation in macro aggregate fraction was high in Obagi II, Omoku 1 and Okwuzi. Aggregate stability was low with Mean Weight Diameter (MWD) of water stable aggregates of 1.64, 1.36, and 1.23mm for Obagi II, Omoku 1 and Okwuzi respectively. Topsoil and subsoil permeability were very slow ranging from 4.92cmhr-1 to 14.18cmhr-1 . Mean soil permeability in the profiles were 4.81, 1.28, 8.66, 1.29 and 0.65cmhr-1 for Obite 1, Obrikom, Obagi 2 and Obuburu, respectively.
Authors and Affiliations
Kamalu O. J, Orji O. A.
Keywords
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- EP ID EP382707
- DOI 10.9790/2380-1103020111.
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