Plant husbandry – Receptacle for growing medium – Irrigator
Patent
1979-06-18
1981-01-20
Bagwill, Robert E.
Plant husbandry
Receptacle for growing medium
Irrigator
47 81, 47 62, A01G 2700
Patent
active
042454344
ABSTRACT:
The subirrigation of soil in a container for container-grown plants is accomplished upwardly through an opening in the container bottom by placing the container on the upper surface of a capillary sheet in the form of a sheet wettable plastic having a multiplicity of capillary openings therein and by disposing the capillary sheet so that its undersurface directly overlies in unbonded face-to-face contacting relation an essentially continuous and substantially smooth wettable surface presented by a substantially flat member comprised in a support bed for the container as, for example, by a sheet of plastic overlying a substantially rigid member or by a substantially rigid slab comprised in the support bed and feeding an aqueous liquid into the interface between said surfaces as through feeder tubes by gravity or by capillary travel from a reservoir disposed below the interface, whereby the so fed aqueous liquid becomes distributed by capillary action to any portion of the capillary sheet directly underlying a plant container resting thereon and thence upwardly through the openings in the capillary sheet and into the soil in the container. Other features relate to a duplex supporting tray for plant containers to be irrigated that comprises an upper tray on which plants may be irrigated as described above and a lower tray into which liquid may drain from the upper tray and from which, when required, liquid may be drawn upwardly by a capillary wicking action to irrigate soil in containers supported by the upper tray.
REFERENCES:
patent: 2810235 (1957-10-01), Magid
patent: 3220144 (1965-11-01), Green
patent: 3534498 (1970-10-01), Herrli
patent: 3778928 (1973-12-01), Green
patent: 4001968 (1977-01-01), Green
patent: 4117632 (1978-10-01), Pearce
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