Runoff, infiltration rates and accumulated infiltration were measured near Keephills, Alberta (53� 30� N; 114� 27� W) on two pasture sites, and three hayfields with one hayfield established on reclaimed mine land. Three management treatments (hayed, mowed, and fallow) were applied to the hayfield plots and two treatments (grazed and fallow) were applied to the pasture plots. Grazing occurred at moderately heavy levels. Soil bulk density was measured three times during the study. Rainfall simulations were run at each site once in late July and again in late September. Runoff, infiltration rates and accumulated infiltration were measured.
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