Showing 11 – 20 of 152 matching resources

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.

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.

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.

[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.