Showing 241 – 250 of 276 resources

Effects of Various Filters on Sap Quality and Characteristics

Sap filters can remove residue or debris, which may inadvertently enter the sap through the collection system or during storage. Moreover, filtering may improve the storage potential of maple sap, improve sap quality especially during mid- to late-season and help in keeping the evaporator system clean.

Vacuum Sap Collection: How High or Low Should You Go?

Questions of how vacuum affects maple sap, syrup and trees have existed for many years, and these issues are perhaps more important today than ever before due to the increasing use of collection systems that can achieve very high levels of vacuum. This article will describe recent research performed at the University of Vermont Proctor Maple Research Center that was designed to answer questions about high vacuum.

Comparison of the “Small” Spout with the Traditional 7/16″ Spout

The “small” spout, 19/64″ or 5/16″ in diameter, has been widely available to maple producers since the mid to late 1990’s as a “healthy” alternative to the traditional 7/16″ spout. While now in general use by producers in some regions, particularly those collecting sap by vacuum, the utility of these smaller spouts is still questioned by many sugarmakers, particularly those collecting sap by gravity. This article will review several studies conducted at the University of Vermont Proctor Maple Research Center comparing 7/16″ spouts with small spouts (for the purposes of this article, 5/16″, and 19/64″ will be considered equally as “small” spouts).

Results from the 2007 New England tapping survey

Results of an annual survey conducted of New England sugarmakers, capturing information on production practices and results, such as types of equipment used, sap sugar content, sanitation practices, and other data.

Should Lateral Lines Be Vented?

A great deal has changed since the 1960s and 1970s in terms of maple production and recommended practices, especially given the introduction of the new polyethylene tubing formulations and new types of spouts. Consequently, we are occasionally asked whether lateral lines in gravity tubing installations should be vented. As a result of these questions, we compared sap yield from standard non vented (closed) 5/16″ lateral lines alongside a vented 5/16″ installation under gravity conditions.

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.

Results from the 2006 New England tapping survey

Results of an annual survey conducted of New England sugarmakers, capturing information on production practices and results, such as types of equipment used, sap sugar content, sanitation practices, and other data.

Controlling Microbial Population in Sap Systems

Over the course of one maple sap season in Western New York that started approximately March 8, 2005 and ended April 9, 2005, four maple sap locations were sampled to determine the levels and diversity of microbial populations contained in the different sap samples.

North American Maple Syrup Producers Manual, 2nd edition

A must have for any serious producer. One of the best books out there that cover all aspects of maple. This book has chapters on History of Maple Syrup and Sugar Production, Maple Resource, Planning an Operation, Managing Maple Trees, Sap Production, Syrup Production, Syrup Filtration, Marketing and many more. With over 300 pages this book is full of wisdom.

North American Maple Syrup Producers Manual (pdf) The maple manual is out of print. It is available instead as a for-sale PDF from Ohio State University Extension. Note that a more recent edition is available on this site here.

A History of the Gooseneck: The Brower Sap Piping System and the Cary Maple Sugar Company

The initial application of plastic tubing for gathering maple sap in the 1950s was indisputably one of the most significant technological developments of the maple industry in the twentieth century. However, the first viable tubing system was introduced over forty years earlier as a gravity drawn system made completely of metal.