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Glossary Greenhouse / Term

Vapor pressure deficit (VPD)

The difference between the actual water vapor pressure and the saturation of water vapor pressure at a particular temperature; at a low VPD, transpiration may be too low; at a high VPD, transpiration may be too high; you can manipulate VPD to make plants more vegetative or more generative.

Permanent link Vapor pressure deficit (VPD) - Creation date 2021-04-24


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