Skip to Main Content
Comparison of vacuum and gravity sap flows from paired sugar maple treesAuthor(s): H. Clay Smith; Carter B. Gibbs
Source: Research Note NE-122. Upper Darby, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 4p.
Publication Series: Research Note (RN)
Station: Northeastern Research Station
PDF: Download Publication (204.25 KB)
DescriptionPaired sugar maple trees with single tapholes were used to compare sap yields from vacuum-pumping with sap yields from gravity flow. Results indicated that vacuum yields were approximately twice as great as gravity flows. These results support previous findings from studies in which vacuum and gravity were compared with two tapholes on the same tree.
- Check the Northern Research Station web site to request a printed copy of this publication.
- Our on-line publications are scanned and captured using Adobe Acrobat.
- During the capture process some typographical errors may occur.
- Please contact Sharon Hobrla, firstname.lastname@example.org if you notice any errors which make this publication unusable.
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationSmith, H. Clay; Gibbs, Carter B. 1970. Comparison of vacuum and gravity sap flows from paired sugar maple trees. Research Note NE-122. Upper Darby, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 4p.
- Vacuum transfer system increases sugar maple sap yield
- Some effects of paraformaldehyde on wood surrounding tapholes in sugar maple trees
- Tapping near old tapholes in sugar maple trees
XML: View XML