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Fig. 1. Relationships between concentrations of particulate P (mg P L–1) and suspended sediment (g L–1) in surface runoff from four calcareous soils. Data are for two irrigation experiments on dry and wet soils. Portneuf topsoil: Y = 1.25x + 1.52, r2 = 0.77, F = 48.0, P < 0.001. Portneuf subsoil: Y = 1.42x + 3.77, r2 = 0.73, F = 37.7, P < 0.001. Warden soil: Y = 0.67x + 0.19, r2 = 0.36, F = 6.7, P < 0.05. Greenleaf soil: Y = 0.70x + 0.77, r2 = 0.66, F = 11.7, P < 0.05.
