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The nutrient fluxes of nitrate, ammonium, phosphorus and potassium in runoff and sediments were evaluated over a two-year period (1999–2000) on the taluses of terraces, in a zone of intense subtropical orchard cultivation (SE Spain). The erosion plots were located on a terrace of 214% (65°) slope, at 180 m in altitude and with 16 m2 (4 × 4 m) in area. Shrubby covers were tested for effectiveness in...