Author: Barton M. Blum
Publisher:
ISBN:
Category : Sap
Languages : en
Pages : 14
Book Description
S2Our recent studies of maple sap production have shown that invented tubing collection systems yield more sap than vented tubing systems, and that these increases are related to natural vacuum that develops in the unvented systems. Application of additional vacuum with a vacuum pump produced a further increase in sap yield. In these studies we used a paired-taphole type of experimental design. Two tapholes were drilled 6 inches apart on the same tree; one taphole of each pair received one treatment (vacuum) while the other was a control (no vacuum).S3.
Effect of Vacuum Pumping on Lateral Movement of Sap in the Maple Tree Bole
Effect of Vacuum Pumping on Lateral Movement of Sap in Maple Tree Bole
Vacuum Pumping Increases Sap Yields from Sugar Maple Trees
Author: Barton M. Blum
Publisher:
ISBN:
Category : Maple syrup
Languages : en
Pages : 18
Book Description
S2In the spring of 1967, a vacuum pump was installed at a sugarbush located in Underhill, Vermont. This work proceeded in two phases: an individual-tree study designed to determine if sap could be drawn out of a tree in sufficient quantities to account for large yield differences; and a large-scale study of the effects of sustained levels of vacuum on yields from a nearly commercial-size network of tubing. S3.
Publisher:
ISBN:
Category : Maple syrup
Languages : en
Pages : 18
Book Description
S2In the spring of 1967, a vacuum pump was installed at a sugarbush located in Underhill, Vermont. This work proceeded in two phases: an individual-tree study designed to determine if sap could be drawn out of a tree in sufficient quantities to account for large yield differences; and a large-scale study of the effects of sustained levels of vacuum on yields from a nearly commercial-size network of tubing. S3.
Report
Author: Northeastern Forest Experiment Station (Radnor, Pa.)
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 412
Book Description
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 412
Book Description
Monthly Catalog of United States Government Publications
Author: United States. Superintendent of Documents
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages :
Book Description
February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages :
Book Description
February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index
Bibliography of Agriculture
Monthly Catalog of United States Government Publications, Cumulative Index
Author: United States. Superintendent of Documents
Publisher:
ISBN:
Category : United States
Languages : en
Pages : 1504
Book Description
Publisher:
ISBN:
Category : United States
Languages : en
Pages : 1504
Book Description
U.S. Forest Service Research Paper NE.
Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 508
Book Description
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 508
Book Description
The Value Added by Sawmilling in the Appalachian Hill Country of Ohio and Kentucky
Author: Orris D. McCauley
Publisher:
ISBN:
Category : Sawmills
Languages : en
Pages : 342
Book Description
Publisher:
ISBN:
Category : Sawmills
Languages : en
Pages : 342
Book Description
At the Northeastern Station
Author: Northeastern Forest Experiment Station (Radnor, Pa.)
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 240
Book Description
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 240
Book Description