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Fig. 6. Relationship between runoff total phosphorus (TP) load, runoff sediment (SED) concentration, and Bray P1 (B1) soil extraction values. Symbols:
indicates chisel-plowed plots,
indicates no-till plots. The TP load = -0.02 + 0.0003B1 + 0.06SED - 0.0001B1 x SED; R2 = 0.44, P = 0.001.
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