Effect of topography on soil erodibility in Kakuuto

  • M.J G Majaliwa
  • M K Mugunda
  • M M Tenywa
  • M Isabirye

Abstract

Soil erodibility is a property that determines the vulnerability of a soil to erosion processes. Interrill erodibility of 7 soil types, haplic Luvisols, haplic Acrisols, skeletic Luvisols, skeletic Acrisols, rhodic skelectic Acrisols, ferric Acrisols, fern Rhodic Acrisols of Kalcuuto micro-catchment of the Lake Victoria basin was measured, and its toposequence pattern investigated using a portable rainfall simulator in the field. Simulated rainfall of 7 mm/min was applied for 5 min on 0.25 by 0.25 m plots; 16 tests were run on each soil type, under 2 moisture regimes (thy and wet). Results indicated that there were 2 groups of no pairewise significant difference in interill erodibility: haplic Acrisols, haplic Luvisols, Rhodic skeletic Acrisols, and skeletic Acrisols, ferric Acrisols, fern rhodic Acrisols and skeletic Luvisols (P = 0.0ll) being the second. The first group was more eroded than the second. Significant differences (P = 0.05) were observed along the toposequence on interrill erodibility with an increase towards the footslope The footslope interrill erodibility was 4.13 x l06 kg/m2s while  alues of 1 05 x 106/kg/m4s and 1.74 x 106/kg/m2s were observed at the upper and the middle landscape position; respectively.

Published
2008-09-08
How to Cite
Majaliwa, M., Mugunda, M., Tenywa, M., & Isabirye, M. (2008). Effect of topography on soil erodibility in Kakuuto. East African Agricultural and Forestry Journal, 69(1&2), 11. Retrieved from https://www.kalro.org/www.eaafj.or.ke/index.php/path/article/view/45
Issue
Vol 69 No 1&2 (2003): East African Agricultural and Forestry Journal
Section
Articles

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