Hillslope Hydrology in a Deeply Weathered Saprolite and Associated Nitrate Transport to a Valley Bottom Wetland in Central Uganda

While interflow from the slopes can be crucial for water and nutrient availability in low-input farming systems wetlands East Africa, very little data exist on hillslope hydrology associated transport deeply weathered saprolites over crystalline rocks. This study aims a better process understanding of generation routing this environment its contribution to nitrate at wetland fringe valley bottom central Uganda. The was set up as plot following multi-method approach, including trenches, soil analysis, geo-electrical measurements. We found that related undulating subsurface topography conductivity upper saprolite, while conducted slope toe via small, perched aquifers preferential flow paths within which are connected during rainy season. Interflow volumes were strongly land-use type rainfall characteristics. As delivered quickly lost anaerobic fringe, sustainable agricultural management should focus upland positions.