The influence of centrifuging on phosphorus (Olsen P) soil test values. Short communication
1990
Poile, G.J. | Ring, S.M. | Conyers, M.K. (New South Wales Agriculture and Fisheries, Wagga Wagga (Australia). Agricultural Research Inst.) | Slattery, W.J. (Victorian Dept. of Agriculture and Rural Affairs, Rutherglen (Australia). Rutherglen Research Inst.)
With increasing centrifugation of the NaHCO3 extract in the Olsen P test it was observed that solution P values declined and approached the P values obtained on soil-filtered extracts. It is recommended that the NaHCO3 extract be soil-filtered as in the original method.
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