Abstract
Soil erosion is a progressive process in which particles of the soil are detached and removed by the influence of water and wind which leads the soil to degenerate. Land degradation as a result of soil erosion is one of the world's most serious environmental problems. Soil erosion from cultivated fields is a global problem that affects water quality, the fertility of the soil, and the capacity of reservoirs. Resulting from improper agricultural management activities, Africa is notably prone to soil erosion by water, posing a danger to agricultural productivity and environmental sustainability. Agricultural management practices are crucial to prevent and minimize erosion and sedimentation in watersheds. In this study, scenarios of agricultural management practices were identified and their potential effects in reducing soil erosion and sediment yield were assessed and quantified with the Soil and Water Assessment Tool in Rib watershed, Ethiopia. The effectiveness of soil/stone bund and grass filter strips with two scenarios on each practice (total of four scenarios) on soil erosion and sediment yield in the agricultural fields were analyzed. Results showed that grass filter strips of 1 m and 5 m width reduced sediment loss by 30% and 48.7%, respectively. Sediment yield declined between 76.7 and 77.9% by employing soil/stone bunds in the watershed. A high reduction in sediment yield was observed with soil/stone bund practices compared to grass strips. Thus, the results provide meaningful information for management practice experts to target the most effective agricultural management practices in the watershed.
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The Ethiopian Meteorological Agency (EMA) for providing meteorological data and the Ministry of Water Resource of Ethiopia for the provision of flow, sediment, and soil data are gratefully acknowledged.
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Tsegaye, L., Bharti, R. Assessment of the effects of agricultural management practices on soil erosion and sediment yield in Rib watershed, Ethiopia. Int. J. Environ. Sci. Technol. 20, 503–520 (2023). https://doi.org/10.1007/s13762-022-04018-w
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DOI: https://doi.org/10.1007/s13762-022-04018-w