Plant oriented control system based upon vapor pressure deficit data
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United States of America Patent
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Aug 15, 1989
Issued Date -
N/A
app pub date -
Feb 16, 1988
filing date -
Oct 16, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
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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