Download or read book Estimating Decay in Living Trees written by Sylvia Greifenhagen and published by Sault Ste. Marie : Ontario Forest Research Institute. This book was released on 2005 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes a project to assess the accuracy of two instruments for detecting wood decay in trees in order to assess their accuracy & applicability for collecting decay data in Ontario forests. The instruments tested were the Silbert Digital MicroProbe and the Resistograph F400. In general, both instruments measure & record the resistance encountered by a thin probe as it drills through wood. The use of these instruments was compared with visually measuring decay in 60 aspen logs and 71 sugar maple logs. The instruments were also used in boreal mixedwood & tolerant hardwood stands to determine their operability under field conditions.
Download or read book A Photo Guide to the Patterns of Discoloration and Decay in Living Northern Hardwood Trees written by Alex L. Shigo and published by . This book was released on 1969 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: S2This guide has been prepared to help you estimate the extent and severity of discoloration and decay in northern hardwood trees. Though this certainly is not the last word on the subject, our research in this has progressed to the point where our findings, combined with the findings of others, can be put to practical use. By dissecting living trees and studying the organisms that infect them, we now know that discoloration and decay develop in certain definite patterns. And the patterns of discoloration and decay within the tree can be predicted from external signs. Discoloration and decay are the most serious defects of northern hardwood trees. In speaking of defect, we must distinguish between injury and damage. Injury harms the tree: damage lowers the quality of the wood. For example, a disease like vascular wilt may kill the tree but do no damage to the wood. But an insect like the cambium miner may do very little harm to the tree yet do great damage to the wood. The unseen damage done to a tree is important in the economics of forestry. Every operation in growing a tree, harvesting it, and converting it into products costs time and money. And after all the time and money have been spent on a tree, the product made from it may prove to be not worth the effort; and the tree might have been used more profitably for some other product that does not require high-quality wood. The increased use of veneer offers an illustration. A veneer log brings top prices. But its actual value may not become apparent till it is put on a lathe and peeled. A log that looks very good and sound to the core, may have minute streaks of discoloration scattered all through it, so that all the veneer it produces is badly streaked with defects. On the other hand, a log that has a rotten core surrounded by clear wood may produce the highest quality of veneer. So it is not so important how much discoloration and decay a tree has, but when these defects are in a tree. The pattern of the discoloration and decay- that's the important thing.S3.
Download or read book Fungal Strategies of Wood Decay in Trees written by Francis W.M.R. Schwarze and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wood-destroying fungi play an important role in nature, because they are the only forms of life capable of reducing wood to its initial constituents. However, they can also be dangerous for people and property, as they can impair the stability and fracture-safety of trees. This book gives detailed information, based on new and original scientfic findings, on the examination and effects of the most important species of fungi associated with failure of infected urban trees. In addition, new ways are presented for predicting the advance of decay in the living tree. The subject is illustrated and made easily accessible by numerous colored photos of fungus fruit bodies, defect symptoms, and macroscopic and microscopic pictures of wood decay. A detailed introduction to the fundamentals of wood pathology provides a way into the subjects of applied mycology and tree care for readers without previous special knowledge. Francis W.M.R. Schwarze, National Diploma of Arboriculture at Merrist Wood College, UK (1991), Master of Science in Pure, Applied Plant and Fungal Taxonomy, University of Reading, UK (1992), doctorate at Freiburg University (1995), since 1996 assistant at the Institute for Forest Botany and Tree Physiology at Freiburg University, concentrating on research into wood-destroying fungi and host-fungus interactions. Julia Engels, Diploma Forester at Freiburg University (1995), doctorate on root fungi at Freiburg University (1998). Since 1998 active in tree care and mycology in Luxembourg. Claus Mattheck, born 1947, doctorate in theoretical physics (1973), qualified as lecturer on damage studies at Karlsruhe University (1985), and now teaches there as Professor. Since 1991 he has been an officially appointed and attested expert on tree mechanics and fracture behaviour. Has been awarded numerous prizes for research and publication. Head of the Biomechanics Department at the Karlsruhe Research Centre.
Download or read book Estimating Decay in 40 to 90 year old Grand Fir Stands in the Cleawater Region of Northern Idaho written by Gregory M. Filip and published by . This book was released on 1990 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Detection of Discoloration and Decay in Living Trees and Utility Poles written by Alex L. Shigo and published by . This book was released on 1974 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A New Non destructive Method for Determining Internal Wood Condition and Decay in Living Trees written by A. Habermehl and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analysis of Non destructive Methods of Detecting Decay in Living Trees written by James W. Edgren and published by . This book was released on 1959 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book General Technical Report RM written by and published by . This book was released on 1978 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Estimation of decay in old growth western hemlock and Sitka spruce in southeast Alaska written by Wilbur A. Farr and published by . This book was released on 1976 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Decay of Ponderosa Pine Sawtimber in the Black Hills written by Thomas E. Hinds and published by . This book was released on 1971 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: A defect study of 1,725 logs cut from 498 trees provided the basis for determining the relationships between tree age, volume, and defect. Red rot was responsible for 8.6 percent, brown rots 7.3 percent, and other defects 3.3 percent of the total 19.2 percent defect. Red rot, found in 68 percent of all trees, was the most important cause of defect.
Download or read book Diagnosis and Prognosis of the Development of Wood Decay in Urban Trees written by Francis W. M. R. Schwarze and published by . This book was released on 2008 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Detectability of decay in living trees by x ray diagnosis written by J. Handl and published by . This book was released on 1978 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A First Look at Tree Decay written by Kevin T. Smith and published by . This book was released on 1998 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wood Decay in Living and Dead Trees written by United States Department of Agriculture and published by CreateSpace. This book was released on 2015-01-02 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pioneering research by Alex L. Shigo and his associates has produced a series of pictorial guidelines to provide a better understanding of how trees respond to wounding and subsequent microbial infections that lead to wood decay. The purpose of this paper is to visually summarize through the use of 96 color photographs and illustrations, the varied patterns of wood discoloration and decay observed in the dissection of thousands of trees. This information has served as a conceptual framework for understanding the biochemical processes that limit the spread of wood-destroying infections initiated by wounding during the maturation of all trees. This understanding has helped those who work with forests, trees, and wood to resolve practical problems and improve the health and productivity of trees and forests.
Download or read book A Guide to Forest Disease Research in the Northeast written by United States. Forest Service and published by . This book was released on 1963 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Guide to Forest Disease Research in the Northeast written by Marvin Edward Fowler and published by . This book was released on 1963 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Manual of Wood Decays in Trees written by Karlheinz Weber and published by . This book was released on 2003 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
