Download or read book Vacuum Pumping Increases Sap Yields from Sugar Maple Trees written by Barton M. Blum and published by . This book was released on 1968 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Vacuum transfer system increases sugar maple sap yield written by Russell S. Walters and published by . This book was released on 1978 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Variation of Sugar Maple Sap Yield and Its Influence on Experimental Design written by Barton M. Blum and published by . This book was released on 1968 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: S2When sap production research was begun by the Northeastern Forest Experiment Station in Burlington, Vermont, in 1964, it became apparent that more quantified information on sap yield variation among individual trees and among years was needed to facilitate the designing of efficient experiments. One of the first projects undertaken was to record seasonal sap yields on approximately 140 individual trees on a sugarbush near Jericho, Vermont. Yields were measured in the sap seasons of 1965, 1966, and 1967. Data presented in this report are based for the most part on a random sample drawn from these trees. All sample trees were tapped with two tapholes bored to a uniform depth.S3.

Download or read book Sugar Maple Sap Volume Increases as Vacuum Level is Increased written by Russell S. Walters and published by . This book was released on 1975 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Comparison of Four Survey Techniques Used in Outdoor Recreation Research written by Elwood L. Shafer and published by . This book was released on 1967 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: S2Because of the great and growing interest in outdoor recreation, many studies are being made by private and public agencies that need information for planning use of land and facilities for recreational purposes. In these studies much attention is being given to the people who use recreational facilitieswho they are; where they come from; what they like; what they want; how much they are willing to spend. Many types of surveys are being used in studying these people. The main question in planning a survey of this sort is: What survey technique can be used that will provide the most reliable and valid results at the least cost? To get an answer that we could use in our recreation research program, we made a study of four different survey techniquesa personal interview, a handout questionnaire, an immediate mail questionnaire, and a delayed mail questionnaire. Results show that the delayed mail survey, conducted 3 months after the camping experience, gets the best results at the least cost. Our study is described here for the benefit of other research workers in outdoor recreation.S3.

Download or read book At the Northeastern Station written by Northeastern Forest Experiment Station (Radnor, Pa.) and published by . This book was released on 1967 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Report written by Northeastern Forest Experiment Station (Radnor, Pa.) and published by . This book was released on 1966 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Stream Water Quality in the Coal Region of West Virginia and Maryland written by Kenneth L. Dyer and published by . This book was released on 1982 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Maple Sirup Producers Manual written by C. O. Willits and published by . This book was released on 1963 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Maple Sirup Producers Manual written by Charles Oliver Willits and published by . This book was released on 1958 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Agriculture Handbook written by and published by . This book was released on 1976 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: Set includes revised editions of some issues.

Download or read book U S Forest Service Research Note NE written by and published by . This book was released on 1972 with total page 646 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Value Added by Sawmilling in the Appalachian Hill Country of Ohio and Kentucky written by Orris D. McCauley and published by . This book was released on 1967 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book USDA Forest Service Research Note NE written by and published by . This book was released on 1970 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book U S D A Forest Service Research Note NE written by Northeastern Forest Experiment Station (Radnor, Pa.) and published by . This book was released on with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sugar Maple Research written by and published by . This book was released on 1982 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Monthly Catalog of United States Government Publications Cumulative Index written by United States. Superintendent of Documents and published by . This book was released on 1979 with total page 1504 pages. Available in PDF, EPUB and Kindle. Book excerpt: