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This research was designed to examine age-related losses in sap yield in tubing systems operated under vacuum, and to explore different strategies to reduce tubing microbial contamination induced sap yield losses.
Details a study of 3/16″ tubing conducted in West Virginia.
Leader Evaporator Co. Check-Valve (CV) spouts and adapters incorporate a small, free-floating ball which is designed to reduce or prevent backflow of sap into the taphole during freezing, when leaks in the tubing system occurs, and when mechanical releasers dump and introduce air into the system. Several studies over nearly a decade have compared sap yields from CV adapters and spouts to various non-CV spouts and adapters.
Knowing when, where, and how to tap is critical to making good maple syrup and keeping trees healthy.
There are a number of ways to clean tubing systems to avoid microbial contamination of tapholes and sap.
Using 3/16″ tubing can create non-mechanical vacuum that can increase sap yield.
Best practices for cleaning tubing in Canada.
Although rapidly adopted by many maple producers, due to the relatively short time period in which it has been in widespread use, there is far less understanding of sanitation in 3/16Ó tubing systems. To address this knowledge deficit, we conducted a multi-year study at the UVM Proctor Maple Research Center to examine sanitation related losses in 3/16Ó tubing systems to determine which approach(es) might best mitigate sap losses due to sanitation.
Sap ladders have been developed by maple producers in response to the challenge of transferring sap over gradients in sugar bushes. The main objectives of the present study are to learn more about sap ladders so that recommendations can be made regarding their comparative effectiveness.
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).