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Fig. 8. Relationship between runoff algal-available phosphorus (AAP) load, runoff sediment (SED) concentration, and Bray P1 (B1) soil extraction values. Symbols: {circ} indicates chisel-plowed plots, {blacktriangleup} indicates no-till plots. The AAP load = 0.017 + 0.001B1 - 0.005SED + 3.3 x 10-5 B1 x SED; R2 = 0.42, P = 0.001.