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Fig. 5. Relationship between (a) Mehlich-3 phosphorus in biosolids and (b) the molar ratio of USEPA 3050 phosphorus to [Al + Fe] in biosolids and the changes in Mehlich-1 phosphorus, normalized per 100 kg P/ha added, in the Elkton silt loam and Suffolk sandy loam soils during the incubation study.
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