Abstract
A study on impact of soil erosion predictor variables was carried out at six locations: Kigir, Piku, Daura, Mirnga, Garwashina, and Tum. The aim of the study was to analyse the effects of erosion predictor variables on soil loss rates in Biu Area. There are fourteen (14) soil erosion predictor variables used in the study: soil clay content, erodibility, Bulk density, Organic matter, Soil shear strength, Site slope rating, Rainfall and runoff factor, Cover and management factor, Support practice factor, Temperature of the study area, Soil sodium, Plastic limits, Soil calcium, and Soil infiltration rates with their values as 17.00 – 32.00 %, 0.25 – 0.35 K, 1.25 – 1.38 g/cm3, 2.34 – 6.57 %, 0.012 – 0.081 KPa, 20.00 – 25.00 %, 289.12 – 396.87 mm, 0.04 – 0.40 %, 0.2 – 1.0, 24 – 32 oC, 0.39 – 1.74 Cmol (+)/kg, 5.78 – 18.53 %, 3.80 – 16.00 Cmol (+)/kg, and 1.66 – 14.85 mmh-1, respectively. The mean values of the 14 selected erosion predictor variables for the different sites were significant (p< 0.05) different. The values were significantly higher at Daura, Piku, and Kigir compared to Mirnga, Garwashina and Tum sites. The site did not differ significantly in terms of bulk density, organic matter content, site slope rating, soil shear strength, cover and management factor, support practice factor and soil sodium.
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