I got a new Bluetooth temperature/humidity sensor - Govee - whose phone app. wants to tell me the VPD - Vapour-pressure deficit.
"...the difference (deficit) between the amount of moisture in the air and how much moisture the air can hold when it is saturated."
Did anyone ever bother about this in their greenhouse - seemingly it can have an effect on plant growth - see:
https://en.wikipedia.org/wiki/Vapour-pressure_deficit
"...the difference (deficit) between the amount of moisture in the air and how much moisture the air can hold when it is saturated."
Did anyone ever bother about this in their greenhouse - seemingly it can have an effect on plant growth - see:
https://en.wikipedia.org/wiki/Vapour-pressure_deficit