Skip to Main Content
Some effects of paraformaldehyde on wood surrounding tapholes in sugar maple treesAuthor(s): Alex L. Shigo; Frederick M. Laing; Frederick M. Laing
Source: Res. Pap. NE-161. Upper Darby, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 11 p.
Publication Series: Research Paper (RP)
Station: Northeastern Research Station
PDF: Download Publication (780.15 KB)
DescriptionPills of paraformaldehyde (trioxymethylene) are commonly used in tapholes in sugar maple trees (Acer saccharam Marsh.) to increase the yield of sap collected for making syrup and sugar. The explanation offered for this increase in sap yield is that microorganisms in the tapholes cause premature decline and stoppage of the sap flow, but that paraformaldehyde increases sap yield by inhibiting their growth. But what happens to the tree? To determine the effects of paraformaldehyde on the tissues surrounding tapholes, and on the microorganisms in those tissues, sugar maple trees were dissected and studied. This paper is a report on that study.
- 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, email@example.com 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.
CitationShigo, Alex L.; Laing, Frederick M. 1970. Some effects of paraformaldehyde on wood surrounding tapholes in sugar maple trees. Res. Pap. NE-161. Upper Darby, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 11 p.
- A sugar maple planting study in Vermont
- Variation in sugar content in a budded sugar maple clone
- Widespread sugar maple decline and regeneration failure in the Adirondacks
XML: View XML