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A Photo Guide to the Patterns of Discoloration and Decay in Living Northern Hardwood Trees by Shigo, Alex L., 1930- is a nonfiction available to read on EtoBox.

What is A Photo Guide to the Patterns of Discoloration and Decay in Living Northern Hardwood Trees about?

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 hav

Who reads A Photo Guide to the Patterns of Discoloration and Decay in Living Northern Hardwood Trees?

Author

Shigo, Alex L., 1930-

Publisher

Northeastern Forest Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1969.

Published

1969

Language

EN

Category

nonfiction