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IJSTR >> Volume 5 - Issue 6, June 2016 Edition



International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616



Electrical Resistivity Based Empirical Model For Delineating Some Selected Soil Properties On Sandy-Loam Soil

[Full Text]

 

AUTHOR(S)

Joshua, E. O, Mokuolu, A. O

 

KEYWORDS

electrical resistivity, sandy-loam soil, soil properties, Wenner array

 

ABSTRACT

Electrical Resistivity (ER) survey was conducted on a Sandy-loam soil with a view to evaluate some selected soil properties. Electrical Resistivity was measured from the soil surface at 0 – 0.3 m (ER30) and 0 – 0.9 m (ER90) soil depths using multi-electrode Wenner array and Miller 400D resistance meter. Soil samples were collected to a depth 0.3 m at points where ER was measured, and analyzed for properties such as Organic Matter (OM), Cation Exchange Capacity (CEC), Soil Water Content (SWC), Sand, Silt and Clay contents using standard methods. The results indicated that lower ER areas exhibit higher content of soil properties than higher ER areas. The ER90 correlates insignificantly to the soil properties while ER30 correlates significantly to the soil properties, except clay (r = 0.63 - 0.75). The relationship between ER30 and soil properties were best fitted to multiple linear regression (R2 = 0.90) and Boltzmann distribution (R2 = 0.80 - 0.84). The study indicates the ability of ER to delineate some soil properties influencing yield on sandy-loam soil. This will help farmers take decisions that can improve yields.

 

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