Determination of Saturated Hydraulic Conductivity Using Laboratory Method and Predicted Model of Some Farmlands in Yola South, North-Eastern Nigeria
DOI:
https://doi.org/10.5281/zenodo.16925413Keywords:
Farmlands, Predicted Model, Saturated hydraulic Conductivity, Yola SouthAbstract
The study aimed to determine saturated hydraulic conductivity (Ksat) using laboratory method and predicted model of some farmlands in Yola South, North-eastern Nigeria. Two profile pits were dug in each of the three selected farmlands (Mbamba, Bole and Yolde pate) and representative soil samples were collected from three points in each of the locations at depths of 0-15cm, 15-30 cm and 30-60 cm respectively. The Ksat value for each of the sample was measured in the laboratory using simplified permeameter method and predicted using Relative Effective Porosity Model (REPM). The results revealed that the soil texture at Mbamba and Bole areas were dominated by sandy loam and loam textures at Yolde-pate. In addition, the Bd, Pd, TP and AP were characterized as moderate to high ranges from 1.5-1.79 g/cm3, 2.53-2.71 g/cm3, 32.0-40.07 % and 19.99-32.32% respectively. The measured and predicted Ksat values show a unit magnitude difference at Mbamaba (1.4 to 2.0 ×10-4 m/s and 1.1x 10-5 m/s to 8.1×10-6 m/s) and Bole arable lands (2.8×10-3-5.7×10-5 m/s and 1.2×10-4 m/s to 6.4×10-6 m/s) while Yolde-pate shows irregular Ksat magnitude differences. It is concluded that the measured and the REPM model could not be used to determine Ksat for the low porous soils (loamy, clay loam, clay) for all locations in the study area.
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