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Agronomy Journal Abstract -

Limitation to Water Flux from Soils to Plants1


This article in AJ

  1. Vol. 62 No. 6, p. 693-695
    Received: June 16, 1969

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  1. A. R. G. Lang and
  2. W. R. Gardner2



From theoretical considerations it can be shown that there is an upper limit to the rate at which water can be taken up from the soil by plant roots. This occurs when the unsaturated permeability of the soil adjacent to the roots decreases more rapidly than the increase in the water potential gradient. Flux and water potential measurements obtained experimentally on cotton plants are consistent with this conclusion.

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