iPhone Screenshots

Description

The key metric for high yields in indoor agriculture.

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.

Ratings and Reviews

5.0 out of 5
8 Ratings

8 Ratings

Information

Seller
BE Divergent, LLC
Size
87.5 MB
Category
Utilities
Compatibility

Requires iOS 10.0 or later. Compatible with iPhone, iPad, and iPod touch.

Languages

English

Age Rating
4+
Copyright
Price
Free

Supports

  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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