Plant husbandry – Water culture – apparatus or method – Nutrient recirculation system
Patent
1977-11-07
1980-01-29
Sewell, Paul T.
Plant husbandry
Water culture, apparatus or method
Nutrient recirculation system
47 79, 137577, A01G 924, A01G 2516
Patent
active
041854144
ABSTRACT:
Nutrient feed regulation systems for automatic control of nutrient flow rates in controlled environment agriculture installations utilizing nutrient film techniques. Such control is provided by feed regulators each including means defining a metering orifice of fixed flow area and means establishing a constant hydrostatic head across the metering orifice, thus enabling the maintenance of a constant nutrient flow rate to all plant growth containers in both vertically tiered and horizontally arrayed container configurations.
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"Rapid Progress Through 1974 With Nutrient Film Trials", Cooper, Jan. 25, 1975, The Grower Magazine.
Baker Carl W.
Bratlie Steven A.
General Electric Company
Lang Richard V.
Sewell Paul T.
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