Method and apparatus of growing plants without soil

Details Method and apparatus of growing plants without soil Method and apparatus of growing plants without soil

1979-06-12

1981-01-20

Bagwill, Robert E.

Plant husbandry

Water culture, apparatus or method

47 62, A01G 3100

Patent

active

042454336

ABSTRACT:
For the control of the pH value of a nutrient solution for growing plants the pH value is increased by supplying nitrate nitrogen and is decreased by supplying ammonium nitrogen to the nutrient solution.

REFERENCES:
patent: 2350982 (1944-06-01), Borst
patent: 3578431 (1971-05-01), Ingestad et al.
patent: 3889415 (1975-06-01), Holmes
patent: 3892982 (1975-07-01), Holmes
patent: 3925926 (1975-12-01), Shigeo
Mineral nutrient - - -, Ingestad, Plant Phys. 52, 1972, pp. 332-338.
A definition of - - -, Ingestad, Phys. Plant. 24, 1971, pp. 118-125.
Physiologically balanced - - -, Trelease et al., Science, vol. 78, No. 2028, Nov. 10, 1933, pp. 438-439.
Hydrogen ion concentration - -, Arnon et al., Plant Physiol., vol. 17, 1942, pp. 515-524.
Nutrient solutions - -, Purdue Univ., Circ. 232, Oct. 1938, pp. 11-14.
The Tanks are coming, Spessard, Hydroponics Inc., 1948, pp. 74, 76, 93, 106-107.

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