Abstract
Vegetative filter strips (VFS) are areas adjacent to watercourses with the purpose of reducing sediment and nutrients contained within runoff water from cropland. The aim of this study was to evaluate the retention of water, sediment and nutrients in VFSs with 5, 10, 20 and 30 m widths exposed to simulated runoff water. The VFS chosen for this study were populated by native herbaceous vegetation with a predominance of grasses from South of Brazil. To simulate runoff water, a flow of 30 L min -1 was applied to all plots. Simulated runoff water contained 3.22 g L -1 of sediment and the nutrients concentration was 62.2; 40.9 and 170.3 mg L -1 de P, NH 4-N and NO 3-N,
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