Nutrient film technique

Details Nutrient film technique Nutrient film technique

1978-01-11

1979-12-18

Bagwill, Robert E.

Coopering

Crozing staves

Rotary cutter

47 59, 47DIG4, A01G 3100

Patent

active

041787161

ABSTRACT:
The present invention relates to a method for operating a nutrient film plant growth technique so as to minimise the build up of one chemical in the circulating solution without a corresponding build-up of other chemicals, notably nutrient chemicals, therein. For example the feed of nutrient chemicals is in proportion to the feed of water to the solution, or the concentration of non-nutrients is maintained at a low level or discounted when assessing the amount of nutrient to add to the solution to maintain the desired nutrient level.

REFERENCES:
patent: 2062755 (1936-12-01), Lyons et al.
patent: 3578431 (1971-05-01), Ingestad et al.
patent: 3892982 (1975-07-01), Holmes
patent: 4085546 (1978-04-01), Hallar
patent: 4118891 (1978-10-01), Kehl et al.
The Tank Are Coming, Spessard, Hydrophonics Inc., Conway, Ark., 1948, pp. 95, 106.
NFT Culture, Supplement to the Grower, Feb. 14, 1976, pp. 33, 35, 37-40, 43, 44.

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