The critical soil water content and its relation to soil water dynamics
Using an edaphic model that describes the extraction of soil water by plant roots, the occurrence of depletion zones dose to plant roots is demonstrated. These depletion zones affect the root water potential that is needed to maintain a certain transpiration rate. The results show how the critical soil water content depends on soil's hydraulic properties, transpiration rate and root density.
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Main Author: | |
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Format: | Digital revista |
Language: | English |
Published: |
Escola Superior de Agricultura "Luiz de Queiroz"
1997
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Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90161997000300009 |
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Summary: | Using an edaphic model that describes the extraction of soil water by plant roots, the occurrence of depletion zones dose to plant roots is demonstrated. These depletion zones affect the root water potential that is needed to maintain a certain transpiration rate. The results show how the critical soil water content depends on soil's hydraulic properties, transpiration rate and root density. |
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