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Title: Vacuum transfer system increases sugar maple sap yield
Author: Walters, Russell S.;
Source: Research Note NE-264. Broomall, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 4 p.
Publication Series: Research Note (RN)
Description: Yields of sugar maple sap collected from three plastic pipeline systems by gravity, vacuum pump, and a vacuum pump with a transfer tank were compared during 2 years in northern Vermont. The transfer system yielded 27 percent more sap one year and 17 percent more the next year. Higher vacuum levels at the tapholes were observed in the transfer system.
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Walters, Russell S. 1978. Vacuum transfer system increases sugar maple sap yield. Research Note NE-264. Broomall, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 4 p.
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