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Controlling taphole depth in maple sap production researchAuthor(s): Melvin R. Koelling; Barton M. Blum
Source: Research Note NE-61. Upper Darby, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 4p.
Publication Series: Research Note (RN)
Station: Northeastern Research Station
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DescriptionBecause bark thickness of sugar maple trees varies considerably, the depth of tapholes for collecting maple sap should be varied accordingly to get the taphole depth that will produce the best sap flow. A system of removable collars on the drill bit is recommended as a means of regulating taphole depth in research studies.
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CitationKoelling, Melvin R.; Blum, Barton M. 1967. Controlling taphole depth in maple sap production research. Research Note NE-61. Upper Darby, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 4p.
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