Abstract
Introduction: In arid regions, soil losses are caused by torrential rainfall events and by the erosive energy of runoff. Objectives: To quantify the impact of the use of different types of vegetation cover on soil erosion and soil deposition caused by overland flow. Methodology: The experiment was carried out from July to September 2017 under a randomized block experimental design with three replications. The treatments evaluated were maize harvest residues and buffel grass (Cenchrus ciliaris L.) sowing (MHR + G), maize harvest residues (MHR), buffel grass sowing (G), and the control (C). Results: The MHR + G treatment reduced erosion by 44 % (26.3 t·ha-1) compared to the control (58.6 t·ha-1). Soil deposition was 47.6 and 51.7 t·ha-1 with MHR + G and G, respectively, while in C was 26.1 t·ha-1. Limitations of the study: The results found are valid for the soil and water conditions of this study Originality: There are few technical and scientific reports on the behavior of soil particle removal and deposition processes under runoff conditions. Conclusions: The layer thickness of soil removed and deposited, under overland flow conditions, depends on the type of soil cover. The MHR + G treatment significantly reduced soil erosion, making it a viable alternative.
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