Showing 461 – 470 of all 538 resources in the database

Tapping Tips: The basics of identifying trees and setting taps

Whether you anticipate tapping in your backyard with a half dozen trees or you wish to begin a bit more aggressively with several hundred taps, the core techniques and methods are the same. This guide will introduce you to basic maple tree identification and then prepare you for the basics of tree tapping, time of tapping and the logistics of getting started in the woods.

Tapping Zone Model – Tubing

This model estimates the proportion of clear, conductive wood in the tapping zone of an individual tree each year (for 100 years) based on the values input for tree diameter, tapping depth, spout size, number of taps, and dropline length. This is equivalent to the chances of tapping into conductive wood in this tree each year – if 80% of the wood in the tapping zone is conductive, you have an 80% chance of hitting conductive wood when you tap that tree. The model can be used to estimate whether various tapping practices are likely to be sustainable. A more complete description of the model and guidelines for its use can be found in the companion technical report “A Model of the Tapping Zone”, which is available on the UVM-PMRC website (

Technical Position Paper on Air Injection

The use of air injection technology in the maple industry can be defined as: the forced introduction of air through a series of perforated pipes submerged in the boiling sap in the front and /or back pan of a maple syrup evaporator. Several studies conducted in recent years have investigated aspects of the use of air injection technology in the process of maple syrup production.

Temperature Patterns with an Oil-Fired Evaporator

Knowing the temperature in the evaporator is an essential part to making quality pure maple syrup. This article will discuss observations of temperature in each partition and how the front and back pans temperatures are influenced by the draw off events.

Temperatures in the Sugarbush

One major limitation to the sap-run forecasting ability of many producers is that measurement of air temperature in one location does not capture the wide variation in air temperature throughout the sugarbush; nor does it accurately reflect the temperature of the diverse parts of trees, or of the soil. A study of the range of temperatures in the forest during sugaring time is helpful in understanding some of the influences of weather on sap flow. This article briefly summarizes a large set of data collected over the past years which includes many sugarbush temperatures, and will give a few examples of the sometimes unexpected variation in temperatures which occur during the spring.

Ten Years with the Asian Longhorned Beetle Program in Massachusetts

It’s been 10 years since the ALB was first reported in Worcester, Massachusetts, and since then 24,179 ALB-infested trees have been found and removed, including the four trees mentioned. This has dramatically changed the character of the heaviest hit Worcester
neighborhoods, Greendale and Burncoat, and resulted in a massive reforestation effort. Those neighborhoods were the center of the infestation and nearly every single host tree, including street trees, were removed in the effort to eradicate this pest. The DCR ALB Reforestation program, Worcester Tree Initiative, the city of Worcester, and the other five municipalities in the regulated area have replanted thousands of trees. Today, those young trees have become established and have started to provide much needed shade and wind breaks.

Testing for Invert Sugar in Maple Syrup

Invert sugar content of syrup determines how well the syrup will crystalize when making value-added products. This article explains how to conduct that test.