Research Article

Use of erodibility indices in assessing soil erosion in central and northern Cross River State, Nigeria

Akpa E A1*, Okon P O1, Abam P O2, Sunday L. K1
1 Department of Soil Science, University of Calabar, Calabar, Cross River State, Nigeria
2 Department of Crop and Soil Science, University of Port Harcourt, River State, Nigeria
* Corresponding author: enyaanari@gmail.com
Published: Aug, 2025
DOI: 10.67042/njss.2025.0wv1lbb4
Pages: 7-14
Views: 727
Downloads: 818

Abstract

Soil erodibility indices were used to assess erosion prone areas in central and northern Cross River State, Nigeria. Fourteen (14) composite soil samples were collected at a depth of 0-30 cm and analyzed using standard laboratory procedures. Results showed that the soils are coarse textured with high sand content dominated by textural class of loamy sand in both the central and northern. The vulnerability class used for rating of soil erodibility indices in the study showed that % water stable aggregate (WSA) was severe and moderate (mean values of 55.3 and 37.24%), indicating high and moderately vulnerable. The CV of the %WSA was high and moderate (38 and 34%) in the central and northern. Dispersion ratio (DR) was generally extreme (mean values of 0.36 and 0.32), indicating very high vulnerability. The CV of the DR was high and moderate (56 and 34%) in the central and northern. Clay ratio (CR) was generally moderate (mean values of 3.5 and 3.4), indicating moderately vulnerable. The CV of the CR was high (43 and 54%) in the central and northern. While that of clay flocculation index (CFI) was generally low (mean values of 0.87 and 0.85), indicating its inability to resist dispersion in water. The CV of the CFI was low (6%) in both the central and northern. The t-test analysis conducted on the DR, CR and CFI showed they were no significantly differences (p>0.05). While significantly differences (p

Keywords

Soil erosion Erodibility indices

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How to Cite

A, A. E., O, O. P., O, A. P., & K, S. L. (2025). Use of erodibility indices in assessing soil erosion in central and northern Cross River State, Nigeria. Nigerian Journal of Soil Science, 34(2), 7-14. https://doi.org/10.67042/njss.2025.0wv1lbb4

A. E. A, O. P. O, A. P. O, and S. L. K, "Use of erodibility indices in assessing soil erosion in central and northern Cross River State, Nigeria," Nigerian Journal of Soil Science, vol. 34, no. 2, pp. 7-14, August 2025. doi: 10.67042/njss.2025.0wv1lbb4

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