Proctor Maple Research Center Update
Dr. Tim Perkins, Director of UVM’s Proctor Maple Research Center, shares a review of the past year at PMRC and a collection of recent findings on topics related to sap and syrup production.
Resource type: Research
Showing 61 – 70 of 372 resources
Keys to High Yield
Actual yields in many maple operations are often lower than those achievable under optimum conditions. Dr. Abby van den Berg, Research Associate Professor with UVM’s Department of Plant Biology and Proctor Maple Research Center, presents practices to narrow this gap, from tree to sugarhouse.
Drought Stress and Water Availability for Maple Sap Production: A Correction
Sap flow and stem pressure in sugar maples during winter dormancy depend on the expansion and contraction of gas bubbles. These gas bubbles are primarily located in the libriform fibers of wood tissues, not in the xylem vessels. Though there are gas bubbles (embolisms) in the xylem vessels, these bubbles are not the dominant drivers of stem pressurization.
Increasing Syrup Production by Re-tapping During the Sap Season
Work done at the Uihlein Maple Research Forest in Lake Placid during the 2018 and 2019 maple syrup season looked at timing of tapping to best capture the most amount of sap. During this study it was found that trees tapped in late March did not yield as much syrup since they missed early sap runs. Trees tapped in January were able to capture early season sap runs but yield diminished slightly near the end of the season due to microbial plugging.
Climate Change Impacts and Risks to Southern Maple Production
Aaron Wilson, an atmospheric research scientist, discusses the risks climate change poses to maple syrup production.
Sap sugar within, between seasons at UVM PMRC
Changes in the amount of sugar in maple sap vary within a sap run, from day to day, throughout the season, and from year to year.
Organic maple defoamer
Presentation about organic maple defoamer research.
Sap Yields and Tapping Stained Wood
The effects of tapping on trees, and how to avoid overtapping.
Sustainable Tapping
Investigating how to best tap trees for long-term forest health and sustainable maple production.
Researchers downplay fall tapping
Three-year study finds little payoff in sap yield for sugarmakers who tap in the fall.