Sap Flow, Wounding, & Compartmentalization in Maple
How does a tree respond to the wound created by a taphole, and what does that mean for future sap production?
Author: van den Berg, Abby K.
Showing 11 – 20 of 76 resources
Sap flow, wounding and compartmentalization in maple
Explains how sap flows in trees and the impact that tapping has on subsequent years’ sap flow.
The Northeast Maple Economy: Crop Distribution and Outlook
As the US domestic maple syrup crop continues to grow the influence of different scales and types of business can shape local communities and national trends. Survey results presented here demonstrate the dramatic difference in the scale of maple enterprises as represented by tap count and the resulting working forest acres these businesses utilize.
Effects of Tapping Depth on Sap Volume, Sap Sugar Content, and Syrup Yield Under High Vacuum
Tapping depth strongly influences both sap yield and wounding. Numerous studies have focused on the amount of sap produced with ifferent depths, the most extensive work conducted by Morrow (1963), who found a tendency for increasing sap yields with increasing taphole depth. However, this work was conducted on gravity with 7/16” tapholes, so is less informative to most producers using 5/16” spouts and vacuum.
Early Tapping and Taphole Longevity Strategies Dec 2020 VT Conference
Dr. Abby van den Berg presenting on research on early tapping and taphole longevity strategies on sap yield and non-conductive wood (NCW) formation in maple trees at the Dec 2020 Vermont Maple Conference.
Keys to High Maple Sap Yields Dec 2020 VT Conference
Dr. Abby van den Berg presentation on important factors to achieve high maple sap yields. Given at the December 2020 Vermont Maple Conference.
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.
[Research on] Early Tapping & Taphole Longevity Strategies
Dr. Abby van den Berg, Research Associate Professor with UVM’s Department of Plant Biology and Proctor Maple Research Center, shares the results of a multi-year experiment conducted by the University of Vermont Proctor Maple Research Center to determine the net yields and impacts of fall and early-winter tapping, with and without subsequent “freshening” of the tapholes by re-drilling them wider and/or deeper.
Maximizing Maple Sap Yields
How to collect the most sap possible using efficient techniques.
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.