Plant husbandry – Receptacle for growing medium – Irrigator
Patent
1975-07-30
1977-01-11
Bagwill, Robert E.
Plant husbandry
Receptacle for growing medium
Irrigator
428131, 428454, 47 9, A01G 2700
Patent
active
040019683
ABSTRACT:
Irrigation of a body of soil or other plant-growing medium appropriate for growing plants in hothouses, florist shops and the like is controlled by interposing between the body of soil, which may be in a container having a water-permeable bottom, and a body of water-receptive material to which water is supplied, preferably at a controlled rate, a capillary sheet of impermeable and preferably opaque plastic having a multiplicity of regularly spaced capillary openings therein through which water migrates in travelling from the water-receptive material into the body of soil. The water-receptive material may comprise and preferably consists of a silica sand catalytic plastic sheet having on one side thereof a coating of silica sand particles interspersed by a network of capillary spaces that are conducive to lateral spread of water supplied thereto, said silica sand catalytic sheet also being beneficial in installations wherein a body of soil is in direct contact therewith. Since silica sand possesses both attraction and repulsion of water, the silica sand catalyst is referred to as "absorbent-repelling material."
REFERENCES:
patent: 1222648 (1917-04-01), Marks
patent: 2346029 (1944-04-01), Jennings
patent: 2639549 (1953-05-01), Wubben et al.
patent: 2916854 (1959-12-01), Heigl et al.
patent: 3193970 (1965-07-01), Green
patent: 3220144 (1965-11-01), Green
patent: 3778928 (1973-12-01), Green
patent: 3863388 (1975-02-01), Loads
patent: 3890739 (1975-06-01), Blackburn
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