Source: CORNELL UNIVERSITY submitted to
RETHINKING MAPLE OPERATIONS: MAPLE SYRUP PRODUCTION FROM A HIGH-DENSITY MAPLE ORCHARD
Sponsoring Institution
National Institute of Food and Agriculture
Project Status
NEW
Funding Source
Reporting Frequency
Annual
Accession No.
1023624
Grant No.
(N/A)
Project No.
NYC-147976
Proposal No.
(N/A)
Multistate No.
(N/A)
Program Code
(N/A)
Project Start Date
Oct 1, 2020
Project End Date
Sep 30, 2023
Grant Year
(N/A)
Project Director
Wild, AD, DO.
Recipient Organization
CORNELL UNIVERSITY
(N/A)
ITHACA,NY 14853
Performing Department
Natural Resources
Non Technical Summary
Due to substantial land requirements, maple sap collection systems need to be reassessed for ways to increase sustainability. Maple operations in NY gross $825 per acre but due to significant amounts of labor and energy costs to produce syrup, profit margins are often negative when all cost are incorporated. To be profitable, producers are required to become more efficient by purchasing new or additional equipment which is only feasible when scaling up. Acquiring land to increase the size of production can be impossible or not an option economically. Forest health is another barrier in maple operations as many sugar maple forests are not healthy and are threatened by invasive species. If maples were planted in a high-density orchard system it would be easier to manage tree health and production. Trees could be planted closer together allowing for more syrup produced per acre and faster growth would allow for tapping at a younger age. Trees in an orchard system would be smaller and produce less volume but more stems per acre would create substantially higher production. Both sugar maple and silver maple, faster growing trees, will be assessed to test the long term sustainability. If only half the amount of the sap is produced per tree, the high-density maple orchard would produce ten times the amount of syrup as a native maple forest. Demonstrating the effectiveness of this method would provide maple producers in NY the ability to increase their production and turn their operation into a profitable and sustainable industry.
Animal Health Component
0%
Research Effort Categories
Basic
10%
Applied
50%
Developmental
40%
Classification

Knowledge Area (KA)Subject of Investigation (SOI)Field of Science (FOS)Percent
12506991070100%
Knowledge Area
125 - Agroforestry;

Subject Of Investigation
0699 - Trees, forests, and forest products, general;

Field Of Science
1070 - Ecology;
Goals / Objectives
This research looks to provide an alternative to the standard system of collecting sap from maple trees by testing the feasibility and sustainability of planting maples in a high-density orchard system and tapping the trees at a younger age. Four individual objectives will be assessed from this research: 1) Production comparison of sap yields per acre in a high-density maple orchard and a traditional native maple forest. 2) Cost comparison of setting up a maple orchard versus a native maple forest and the economic return on investment with yield relationships. 3) Determine if tapping a maple at a younger age impacts tree health by assessing growth and wounding within the trees. 4) By planting and tapping both sugar maple and silver maple trees we plan to determine which species of maples are more efficient and productive within an orchard system.
Project Methods
A high-density maple orchard will be established in a vacant field at the Uihlein Maple Research Forest. An orchard with six rows of 12 trees per row (72 total trees) will be established. Three of the rows will be planted with sugar maple and three will be planted with silver maple. Two inch caliper trees will be planted 4 ft. apart within a row and rows will be spaced 12 ft. apart. Narrow 4 ft spacing of trees will allow for more trees per acre and future research will allow for testing mechanical pruning methods to maintain narrow canopies. Trees will be planted in June of 2021. Trees will be tapped using traditional spout and tubing methods with a slight variation to use smaller spouts during the spring sap season of 2022 and 2023. Sap will be collected from the trees using tubing under high vacuum whenever the weather is conducive for spring sap flow. 1). Sap volume and sap sweetness will be recorded from the orchard during each sap flow event. Trees will be tapped in the existing native maple forest adjacent to the orchard and sap volume and sweetness will be collected. Total production of syrup in the orchard area will be extrapolated to represent production per acre for comparison against the native maple forest. 2). Equipment costs and time required for tapping and sap collection will be collected for cost comparison between a native maple forest and the established high-density maple orchard. 3). Measurements of stem diameter and height will be taken right after planting in June of 2021 and later re-measured for growth at the end of the project in August of 2023. Closure of tap holes in each species will be assessed for wounding response at the end of each growing season. Four additional trees (two of each species) will be planted at the same time and will not be tapped to act as control trees. In August 2023 four trees (two trees of each species) will be harvested and cross sections of the stem within the tapping area will be taken to determine the percentage of wood partitioned off by the trees response to tapping. 4). Sugar maple trees are the preferred species for syrup production as a result of their sweeter sap and abundance across NY forests. However, sugar maples are slow growing and less tolerant of site variability and therefore may not be ideal growing in an orchard system. Silver maples are site tolerant, fast growing, and respond well to disturbance. Silver maples are typically lower in sap sweetness but known silver maples with sap sweeter than the average sugar maple exist and could potentially even yield more syrup. Production per tap will be compared between sugar maple and silver maple in the high-density orchard by collecting sap volume and sap sweetness from each species in separate collection tanks. A subset of the sap will be turned into maple syrup for comparison of flavor between tree species.

Progress 10/01/20 to 09/30/21

Outputs
Target Audience:Target audience for this project is maple producers and landownersacross New York (NY) and the entire northeastern United States (US), midwest, and mid-Atlantic. This project is geared directly towards landowners with abandoned agriculture fields that are currently not bringing in economic value to the landowner. These maple producers and landowners are often within areas with little to know economy within the region, high property tax base due to lack of value in the surrounding propertiescontributing to the local tax base.During the reporting period, the entire year was spent setting up the research project and actual producers and landowners were not reached. Target audience will be reached in year 2 and year 3. Changes/Problems:It was a challenge to find the volume of trees that we needed at the size that we needed and find them for a reasonable price. Once I found trees it was hard to find a trucking company to get the trees to us. This delayed the planting date. I also had to plant slightly smaller trees. The trees were acquired though and they were put in the ground in the summer of 2021. So far, it looks like the trees have all survived and will be ready to be tapped in the spring of 2022. Where we had to spend additional on the trees we were able to cut expenses on some of the equipment by using a different method for sap collection that utilizes existing equipment that we were able to utilize by finding a way to route maple vacuum tubing through a culvert under the road. A major change is that I was not able to find larger silver maple trees as initially proposed. The nursery industry no longer grows them to this size as there is not a demand for the trees. Instead I went with a red x silver maple hybrid that is still a fast growing trees. It may actually be a better results as the sap sugar will more than likely be higher. What opportunities for training and professional development has the project provided?Year one was focused on establishing the research project. Opportunities for training and professional development will come in future years once the trees are tapped and sap is collected. How have the results been disseminated to communities of interest? Nothing Reported What do you plan to do during the next reporting period to accomplish the goals?Trees will be tapped for sap collection to quantify total production per acre in a high-density maple orchard. Trees will also be tapped in an adjacent native forest to collect sap data and compare with the high-density maple orchard (objective 1). Sap will be collected separately from the sugar maple and the red x silver maples to compare production potential from the two species (objective 4).

Impacts
What was accomplished under these goals? Being year one, the project was primarily in the establishment stage of the maple orchard. The abandoned field was reclaimed and prepared for planting. Thirty fivesugar maple and 35 red x silver hybrid maples, each 10-12 feet tall, were planted to establish the high-density maple orchard. This will allow us to tap the trees in the spring of 2022 for comparison of yields (objective 1), wounding within the younger trees (objective 3), and determine whether the straight sugar maple or red x silver maple hybrid will perform better.Cost comparison of planting a maple orchard were completed (objective 2). Planting trees of this size will cost close to $100,000 per acre (600 trees to the acre) in just plant material. This is not economically feasible. To do this in a realistic setting (not under time constraints of a research project) smaller trees (sapplings) would need to be planted.

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