Excess Manganese Reduces Chlorophyll in Sugar Maple Leaves
The objective of this study was to examine leaf chlorophyll responses of sugar maple seedlings exposed to excess Mn.
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Expanding trees: diameter growth in sugar maples
Tree growth rate can be an important indicator of how well the tree will heal from tapholes.
Expert Tubing Tips for Maple
At Leader’s Spring Open House, three top experts in tubing and woods management – Glen Goodrich, Mark Erlsten, and Jon Rybkiewicz – sat down for a little over an hour and shared loads of invaluable information on all aspects of installing tubing, tapping trees, and best woods practices.
Exudation Pressure in Maple Trees: Comparing Simulations with Experiments
Exudation is the process whereby trees can generate a large positive pressure in stems or roots during months when the tree is leafless and mostly dormant and temperatures fluctuate above and below freezing. This article aims to provide an update on recent modelling efforts
in combination with experimental measurements from red/sugar maple trees at the University of Vermont Proctor Maple Research Center that validate the model results.
Factors Affecting Sap Yields from Maple Trees
Presents research on taps and tapping practices to maximize yield. Also explains sap flow and tree wounding.
Farm Energy Best Management Practices for Maple Sugaring
A guide to energy efficiency in the sugarhouse.
Fertilization of Sugarbushes Part I: Physiological Effects
The goal of this project was to examine the effects of liming and fertilization on tree physiology, growth and sugar production of a moderately fertile maple stand. In this first report, we describe, in general terms, the study area, treatments, and results of liming and fertilization on tree physiology and growth.
Fertilization of Sugarbushes Part II: Sap Volume and Sweetness
In this article we describe the effects of fertilization and liming on sugar production in maple stands.
Fertilizing a Sugarbush
This brochure is intended to help landowners and maple producers evaluate the nutrition of maple stands, and determine whether fertilization might be appropriate. There is an emphasis on learning some of the plants in your woods, as these are often valuable indicators of site quality, and are in many cases easier to interpret than chemical analyses of soil or leaves.
Field Evaluation of the Small Diameter Spout for Maple Sap Collection
Beginning in 1999, a newly introduced maple sap spout for use in smaller diameter tapholes was evaluated at Cornell University’s Uihlein Sugar Maple Research/Extension Field Station near Lake Placid, New York. After two sap production seasons, no significant differences were found in sap volume yield and sap sugar concentration in maple sap collected with the small diameter spout compared with that of the conventional sap spouts.