The Effect of Xylem Age on Volume Yield & Sugar Content of Sugar Maple Sap
The Effect of Xylem Age on Volume Yield & Sugar Content of Sugar Maple Sap

Author: Carter Bradley Gibbs

Publisher:

Published: 1969

Total Pages: 16

ISBN-13:

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At the Burlington, Vermont, research unit of the Northeastern Forest Experiment Station, a study was begun in 1966 in an effort to identify the portions of the xylem that produce the most sap and the sap with the highest sugar content. The study revealed that the greatest volume of sap comes from xylem that is about 35 years old, and that the sweetest sap comes from the young xylem just beneath the bark.

Sap Yields from Fall and Spring Tapping of Sugar Maple
Sap Yields from Fall and Spring Tapping of Sugar Maple

Author: Melvin Ray Koelling

Publisher:

Published: 1968

Total Pages: 12

ISBN-13:

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S2Some maple sap producers have wondered whether they could increase the total sap yields by tapping their trees not only in the spring but also in the fall too. Our research indicates that tapping in the fall cannot be recommended. Our study of fall tapping was begun in November 1964. Fall tapping was at least theoretically possible because temperature fluctuations like those of the normal spring tapping season occur to some extent in late fall and early winter. However, it was not known whether the volume and sugar concentration of fall-produced sap would be adequate to make such a practice feasible. Nor did we know whether fall tapping would affect the normal spring sap production from fall-tapped trees. The study reported here was set up to answer these questions. S3.