Plant husbandry – Greenhouse – apparatus or method
Patent
1988-02-16
1989-08-15
Hafer, Robert A.
Plant husbandry
Greenhouse, apparatus or method
47 485, 236 44C, 165 21, B01F 302, A01G 900
Patent
active
048562270
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.
REFERENCES:
patent: 4164868 (1979-08-01), Suntola
patent: 4211037 (1980-07-01), Green
patent: 4430828 (1984-02-01), Oglevee et al.
patent: 4755942 (1988-07-01), Gardner et al.
"Effect of Different Irrigation Methods and Levels on Greenhouse Muskmellon" by A. Borelli et al., Acta Horticulturea 58/1977, pp. 129-135.
"Scheduling Irrigations with Computers" by Marvin E. Jensen, Journal of Soil and Water Conservation, pp. 193-195.
"Mist Controller Plus"--Oglevee Computer Systems Operations Manual.
"The Process of Transpiration" by Paul J. Kramer, Water Relations of Plants, Academic Press 1983, pp. 294-297.
Oglevee James R.
Oglevee Kirk A.
Hafer Robert A.
OCS, Inc.
Thompson Jeffrey L.
LandOfFree
Plant oriented control system based upon vapor pressure deficit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Plant oriented control system based upon vapor pressure deficit , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Plant oriented control system based upon vapor pressure deficit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-113134