Electrical Resistivity Based Empirical Model For Delineating Some Selected Soil Properties On Sandy-Loam Soil
Journal: International Journal of Scientific & Technology Research (Vol.5, No. 6)Publication Date: 2016-06-15
Authors : Joshua; E. O; Mokuolu; A. O;
Page : 243-249
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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