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This article in SSSAJ

  1. Vol. 26 No. 3, p. 222-227
     
    Received: June 26, 1961
    Published: May, 1962


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doi:10.2136/sssaj1962.03615995002600030011x

Phosphate Diffusion to Plant Roots1

  1. S. R. Olsen,
  2. W. D. Kemper and
  3. R. D. Jackson2

Abstract

Abstract

Diffusion of phosphate appears to account for the observed rates of P uptake by corn roots. A diffusion equation was developed which takes into consideration the effect of plant removal of P on the relationship between solution P and solid phase P, in addition to the tortuosity and ionic interaction factors of the porous system. The equation has the same form as the heat flow equation, hence solutions of the latter can be applied to describe phosphate diffusion in soils.

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