The Northern New York Agricultural Development Program has posted the latest research results from NNY Maple Specialist Michael Farrell, director of the Cornell Uihlein Research Forest in Lake Placid, NY.
Farrell evaluated the production efficiencies of two sizes of maple sap tubing in gravity-based collection systems. The Evaluating 3/16-inch Maple Sap Tubing Systems Under Natural Flow and Artificial Vacuum Systems in NNY report can be viewed here.
Newly-developed 3/16-inch interior diameter tubing has been suggested as a way to achieve greater and easier natural vacuum pressure to draw sap from the taphole in a maple tree. Each additional inch of vacuum results in an average increase of five to seven percent more sap. » Continue Reading.