Topic: Sap Production

Showing 261 – 270 of 279 resources

Comparison of Alternative Sap Ladders Applied Research in Ontario

Sap ladders have been developed by maple producers in response to the challenge of transferring sap over gradients in sugar bushes. The main objectives of the present study are to learn more about sap ladders so that recommendations can be made regarding their comparative effectiveness.

Publication:
Maple Syrup Digest
Date:
October 1, 2002

Equating Syrup Price to Sap Price

In fairness to both sap producers and sap purchasers, the price of maple sap should be directly related to the price of maple syrup. This chart helps calcuate that value.

Publication:
Maple Syrup Digest
Date:
June 1, 2001

Update on the Maple Tubing Sanitation Research in Ontario

In the spring of 1998, a research project was initiated to develop alternative methods for maple produces using plastic tubing systems. Although the results are only preliminary, the development of alternative sanitation methods that may reduce reliance on chlorine is looking very promising.

Publication:
Maple Syrup Digest
Date:
June 1, 2000

Cost of Maple Sap Production for Various Size Tubing Operations

Reports sap production costs for small (500 to 1,000 taps), medium (1,000 to 5,000), and large (5,000 to 15,000) maple syrup operations that use plastic tubing with vacuum pumping. The average annual operating cost per tap ranged from $4.64 for a 500-tap sugarbush operation to $1.84 for a sugarbush with 10,000 taps. The weighted average was $2.87 per tap or $11.48 per gallon (assumes four taps required to produce a gallon of syrup). The average annual investment cost for a plastic tubing system ranged from $7.90 for a 500-tap operation to $6.03 for a 10,000-tap system. The average labor time per tap was 4.74 minutes in 1998 compared to 9.60 minutes in 1975. The break-even (zero profit) size for a sugarbush operation was 900, 1,500, and 3,800 taps for a 3.0, 2.5, and 2.0o Brix sap, respectively.

Date:
February 1, 2000

Effects Of The Use Of Paraformaldehyde (PFA) Sterilising Pellets On Sugar Maple Health: A Review

Higher and wider discoloration, compartmentalisation and decay in maple wood by the use of the PFA pellet restricts the healthy sapwood areas and diminishes translocation of sap and nutrients. Furthermore, technological advances for better sanitation in sap collection and storage presently in use by the maple industry, tested by research to be safe for maple tree health and syrup quality, have made the use of the PFA pellet unnecessary.

Date:
January 1, 1995

Vigor and Nutrition vs. Sap Sugar Concentration in Sugar Maples

Although maple dieback has received considerable recent attention in the Northeast, little has been reported about the relationship between sap sugar yield and crown health or crown nutrition. We measured sap sugar concentration (sweetness) in six northern Vermont maple stands in the springs of 1990-1992, and sap volume yield from tapholes at one stand in 1991. The stands differed in average crown dieback, canopy transparency, density, and mean dbh, as well as cation exchange capacity (CEC) of upper soil horizons.

Publication:
Northern Journal of Applied Forestry
Date:
January 1, 1995

Sugarbush Management: A Guide to Maintaining Tree Health

Many pests and other stresses affect maple trees growing in a sugarbush. Some pests can markedly reduce sap quantity; others, although conspicuous, are not important. Stresses can result from activities by people and from natural phenomena. Recognizing problems and understanding the factors that contribute to their occurrence, development, and significance are necessary to maintain tree health. This report brings together current information on the living agents and nonliving factors that can cause problems in sugarbushes. Insects, diseases, improper forest stand management, and unwise sugaring practices are illustrated. and ways to prevent or reduce their effects are described.

Date:
February 1, 1990