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Hydraulic characteristics of rill erosion in a semi-arid cambissolo in Brazil

Sandro Augusto Bezerra, José Ramon Barros Cantalice, Moacyr Cunha Filho, Wagner Luis da Silva Souza

01/Aug/2010

Rill erosion begins with the concentration of surface runoff on depressions of soil surface, evolving into the formation of channels or ravine, increasing soil degradation by water erosion. The objectives of this study were to evaluate the hydraulic conditions of the water flow in rills and characterize the water flow regime, and to measure the induced changes in the geometry of the preestablished rills. An experiment was conducted in which outflows of 17.5; 47.0; 60.0; 77.0 and 110.0 L min-1 were applied […]