Fig. 7. (a) Mass and (b) concentration of total P in runoff and sediment modeled with annual applications of 0, 30, 60, 90, and 120 Mg ha^–1 of cattle manure (Table 3) during 60 yr under repeated sequences of 1995–2000 climate data for the Lacombe ecodistrict (annual precipitation in 1995 = 435 mm, 1996 = 604 mm, 1997 = 534 mm, 1998 = 466 mm, 1999 = 450 mm, 2000 = 461 mm). Note logarithmic scale on vertical axis.