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Eli=MC2

Vapor Pressure Deficit Explained, YouTube
Grobot, VPD

Understanding VPD

VPD Video
Stomata VPD

What is VPD?

Vapor Pressure Deficit

 

Vapor pressure deficit (VPD) is the difference between the amount of water in the air and the maximum amount of water the air can hold for a given temperature (saturation). It is usually measured in kilopascals (kPa) or bars. A low VPD is indicative of high moisture content in the air and a high VPD is indicative of low moisture content.

The surface of leaves is commonly assumed to be saturated with water. Plant stomatal opening is directly related to VPD. If VPD is too high, stomata will close to conserve water. If it’s too low, stomata may be fully open, but evapotranspiration will be slow and nutrient uptake will be impacted. Both conditions can cause wilting, leaf tip burn and other crop maladies. When VPD is managed correctly, plants will transpire freely, move nutrients readily to cells and maximize CO2 uptake.

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Content is from Marijuana Venture Magazine.  For the full article click button below.

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What is a ton of Air Conditioning?

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Mold

Learn How to Control Mold with Environmental Control Equipment

Mold can be a major concern for a building manager or indoor cultivator.
 

Read the latest blog to learn how to control the environment and prevent mold from taking over mission-critical spaces. 

Content is from Data Aire Inc.

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