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Limitation to Water Flux from Soils to Plants 1
Author(s) -
Lang A. R. G.,
Gardner W. R.
Publication year - 1970
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1970.00021962006200060002x
Subject(s) - soil water , flux (metallurgy) , permeability (electromagnetism) , agronomy , environmental science , soil science , water potential , chemistry , biology , membrane , biochemistry , organic chemistry
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.