Greenhouse irrigation system based upon vapor pressure...

Details Greenhouse irrigation system based upon vapor pressure... Greenhouse irrigation system based upon vapor pressure...

A - Human Necessities

01

G

341/5, 47/6

A01G 9/26 (2006.01)

Patent

CA 1303183

ABSTRACT GREENHOUSE IRRIGATION SYSTEM BASED UPON VAPOR PRESSURE DEFICIT DATA A system for controlling environmental conditions including irrigation or misting in greenhouses having a plurality of crop beds within one greenhouse enclosure. Aspirated enclosures have associated temperature sensors for measuring dry bulb temperature and humidity, the temperature of a surface over the bed and also a sensor of incident light over the bed. A computer is programmed with a task for inputting temperature data and for calculating the vapor pressure deficit over each bed and for inputting incident light data for measuring a parameter indicative of physiological crop age. A task establishes times for supply of water based upon the gathered data.

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