Plant husbandry – Algae culture
Patent
1977-12-12
1978-09-12
Bagwill, Robert E.
Plant husbandry
Algae culture
47 58, A01G 1500
Patent
active
041126165
ABSTRACT:
A method and apparatus for mechanically selectively preventing or permitting systemic sap flow in trees to prevent premature out-of-season bud formation, particularly in fruit trees, when unreasonably warm spells would promote flow of tree sap and consequently formation of premature buds which in the ordinary course of events will suffer kill back and result in serious tree damage upon reversion to normally cold weather, the method comprising cutting all around the body of a tree at a selected section from the bark to around the outer edge of heartwood; inserting at least a pair of perforated members having wicks or wick-like members in the perforations thereof in the cut area to both prevent healing and closing of the cut and to permit flow of sap when desired and at least a pair of members for cooperation with the perforated members to permit flow of sap through the perforations thereof or to block up the perforations to prevent flow of sap therethrough. The apparatus for controlling bud formation comprises at least a pair of hinged units having perforations with wicks therein and a pair of perforated control members with wicks therein which members are selectively conditioned to prevent or permit flow communication of sap through the perforations and between sap-carrying cells of the tree to thereby control bud formation wherein the wicks function to effect sap flow between cut portions of a tree when corresponding perforations of the hinged units and the pair of control members are conditioned into alignment.
REFERENCES:
patent: 42176 (1864-04-01), Fisher
patent: 1442367 (1923-01-01), Stevens
patent: 2122734 (1938-07-01), Winford
patent: 3890740 (1975-06-01), Miller
Bagwill Robert E.
Flocks Karl W.
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