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The influence of soil volume on the absorption of soil phosphorus by plants and on the determination of labile soil phosphorus

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Summary

In a pot experiment the soil volume available for ryegrass growth was varied. There was relatively greater uptake of phosphorus from the smaller amounts of soil and an increase in the pool of labile phosphorus (the L-value). It appears that an equilibrium exists in the soil between non-labile and labile phosphorus, and this equilibrium may be disturbed by the removal of phosphorus by plants.

The variations of L-value with time followed a pattern indicating the initial influence of seed-borne phosphorus and slow isotopic exchange of the added carrier-free P32 with soil phosphorus.

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Authors and Affiliations

  1. Levington Research Station, Ipswich

    S. Larsen & C. D. Sutton

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  1. S. Larsen
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  2. C. D. Sutton
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Larsen, S., Sutton, C.D. The influence of soil volume on the absorption of soil phosphorus by plants and on the determination of labile soil phosphorus. Plant Soil 18, 77–84 (1963). https://doi.org/10.1007/BF01391682

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  • DOI: https://doi.org/10.1007/BF01391682

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