Plant husbandry – Water culture – apparatus or method
Patent
1977-09-20
1979-09-04
Bagwill, Robert E.
Plant husbandry
Water culture, apparatus or method
47 65, A01G 3102
Patent
active
041663411
ABSTRACT:
A system for growing plants in spaced apart individual root support beds in elongated U-shaped channels. Each channel has guides for an elongated member to support the root beds above the bottom of the channel and at least one interior duct extending along the length of the channel above the elongated member to deliver cultivation-regulating media through longitudinally spaced outlets. Surplus liquid drains off through the space between the member and the bottom of the channel, carrying away noxious substances from the plants. The top of each channel may be closed by a pair of flexible opaque flaps which yieldingly embrace the stems of plants in the channel to reduce moisture loss and exclude light from the plant roots. The spacing between adjacent channels is varied according to the stage of plant growth, either by arranging the channels in a fixed expanding pattern and moving the plants progressively along the channels or by shifting groups of parallel channels sideways as the plants mature. In particular, a number of parallel channels may be divided into two groups. One group is closely spaced and contains plants at an intermediate stage. The second group is spaced further apart and contains plants in a final stage. After harvesting the mature plants, the second group of channels is shifted to close spacing, providing room to shift the first group further apart.
REFERENCES:
patent: 2189510 (1940-02-01), Swaney
patent: 2486512 (1949-11-01), Armstrong
patent: 3254447 (1966-06-01), Ruthner
patent: 3579907 (1971-05-01), Graves
patent: 3771258 (1973-11-01), Charney
patent: 3835584 (1974-09-01), Shimazu
patent: 3927491 (1975-12-01), Farnsworth
patent: 4028847 (1977-06-01), Davis et al.
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