Expanding trees: diameter growth in sugar maples
Tree growth rate can be an important indicator of how well the tree will heal from tapholes.
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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.
Growth Rates of Sugar Maple Trees Tapped for Maple Syrup Production Using High-Yield Sap Collection Practices
The amount of sap that can be extracted annually from trees for maple syrup production using current equipment and practices is more than double the typical yields achievable when current maple industry tapping guidelines were developed. The growth rates of trees tapped with these Òhigh-yieldÓ practices at 18 sites in Vermont were measured and evaluated to determine whether they were sufficient for the replenishment of conductive wood to remain at sustainable levels when current tapping guidelines are followed.
Growth Rates of Trees Tapped With High-Yield Sap Collection Practices – Are Conservative Tapping Guidelines Sustainable?
The overall objective of this work was to determine whether existing Conservative Tapping Guidelines are appropriate and likely to result in sustainable outcomes when used with sap collection practices that result in higher sap yields.
High Vacuum in Gravity Tubing
Gravity tubing systems are widely used in many small to mid-sized operations throughout the maple region. This article summarizes the past 3 years of my research on gravity tubing, or tubing without a vacuum pump.
How deep do you tap?
An investigation into the impact of tap hole depth on tree health.
Invaders in the sugarbush
Invasive exotic plants are becoming more prevalent and can have a negative impact on sugarbushes. Maple producers need to know how to identify and eradicate invasives.
Maple production in 2010
A summary of the current state of maple production in New England is based on surveys returned from approximately 210 sugarmakers in April, 2010.