Fig. 5. Relationships between Mehlich 3 [P/(Al+Fe)] and (a) dissolved reactive P (DRP) in runoff from soils in a rainfall simulation runoff box study (data are all reps of all 17 soils used in the study); and (b) dissolve reactive P (DRP) in leachate from undisturbed soil columns (reproduced from Maguire and Sims, 2002). Note that r² values apply to the entire split-line model, not individual segments.

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