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The residual value of fertilizer phosphate applied in two field experiments

, : The residual value of fertilizer phosphate applied in two field experiments. Plant & Soil, 18: 267-272

Of the PO4 applied as triple super to 2 soils in the field, 42 & 100% respectively remained in the top 6 inches 3 years later. The first soil contained 17% organic C & the PO4 was probably lost by leaching. In the soils from both sites, half the residual PO4 (measured by isotopic dilution) was still labile & within each soil the uptake of PO4by ryegrass was highly correlated with the L value.


DOI: 10.1007/bf01347880

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