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- Vapour_Pressure_Deficit abstract "Vapour Pressure Deficit, or VPD, is the difference (deficit) between the amount of moisture in the air and how much moisture the air can hold when it is saturated. Once air becomes saturated water will condense out to form clouds, dew or films of water over leaves. It is this last instance that makes VPD important for greenhouse regulation. If a film of water forms on a plant leaf it becomes far more susceptible to rot. On the other hand, as the VPD increases the plant needs to draw more water from its roots. In the case of cuttings, the plant may dry out and die. For this reason the ideal range for VPD in a greenhouse is from 0.45 kPa to 1.25 kPa, ideally sitting at around 0.85 kPa. As a general rule, most plants grow well at VPDs of between 0.8 to 0.95 kPa In ecology, it is the difference between the actual water vapour pressure and the saturation water vapour pressure at a particular temperature. Unlike relative humidity, vapour pressure deficit has a simple nearly straight-line relationship to the rate of evapotranspiration and other measures of evaporation.".
- Vapour_Pressure_Deficit wikiPageExternalLink index.php?option=com_content&view=article&id=7&Itemid=141.
- Vapour_Pressure_Deficit wikiPageID "3291191".
- Vapour_Pressure_Deficit wikiPageRevisionID "585856463".
- Vapour_Pressure_Deficit hasPhotoCollection Vapour_Pressure_Deficit.
- Vapour_Pressure_Deficit subject Category:Psychrometrics.
- Vapour_Pressure_Deficit comment "Vapour Pressure Deficit, or VPD, is the difference (deficit) between the amount of moisture in the air and how much moisture the air can hold when it is saturated. Once air becomes saturated water will condense out to form clouds, dew or films of water over leaves. It is this last instance that makes VPD important for greenhouse regulation. If a film of water forms on a plant leaf it becomes far more susceptible to rot.".
- Vapour_Pressure_Deficit label "Sättigungsdefizit".
- Vapour_Pressure_Deficit label "Vapour Pressure Deficit".
- Vapour_Pressure_Deficit sameAs Sättigungsdefizit.
- Vapour_Pressure_Deficit sameAs m.093p7n.
- Vapour_Pressure_Deficit sameAs Q907795.
- Vapour_Pressure_Deficit sameAs Q907795.
- Vapour_Pressure_Deficit wasDerivedFrom Vapour_Pressure_Deficit?oldid=585856463.
- Vapour_Pressure_Deficit isPrimaryTopicOf Vapour_Pressure_Deficit.