Method and apparatus for selectively preventing or permitting sy

Details Method and apparatus for selectively preventing or permitting sy Method and apparatus for selectively preventing or permitting sy

1977-08-10

1978-09-12

Bagwill, Robert E.

Plant husbandry

Process

47 1R, A01G 1500

Patent

active

041126181

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 event 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 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 therethrough and a pair of members 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.

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

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