Plant husbandry – Greenhouse – apparatus or method
Patent
1976-11-17
1979-04-03
Burr, Edgar S.
Plant husbandry
Greenhouse, apparatus or method
47DIG6, A01G 700
Patent
active
041469933
ABSTRACT:
A method and apparatus for facilitating plant growth in which light is alternately directed at the plants from at least two directions. The frequency at which the light is shifted between directions is sufficiently low to allow the plant to react to the light source before the direction of illumination is shifted thereby increasing the growth rate of the plant. In one embodiment, the lights are arranged in two parallel rows above the plants with the rows longitudinally offset from each other so that the lights in each row are directly opposite the midpoint between lights of the other row. Each row is connected in a separately energized circuit so that as the circuits are alternately energized the light is directed onto the plants from at least two discrete directions. The number of lights required for the system is dictated by generally accepted illumination standards for specific plants, yet the operating costs of the system are significantly lower than conventional systems since only half of the lights are illuminated at a time.
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Burr Edgar S.
Feyrer James R.
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