Some Diseases Of New England Conifers
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Some Diseases Of New England Conifers
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Author : Hermann Von Schrenk
language : en
Publisher: Forgotten Books
Release Date : 2017-11-24
Some Diseases Of New England Conifers written by Hermann Von Schrenk and has been published by Forgotten Books this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-11-24 with Science categories.
Excerpt from Some Diseases of New England Conifers: A Preliminary Report Very little attention has been paid to the study of diseases of forest trees in the United States up to this time, and the reasons are Obvious enough. Up to within a few years the supply Of standing timber of all kinds has been so large that a few diseased trees, more or less, scat tered over wide areas were Of little account. The lumberman cut down the sound trees and paid no attention to such as he recognized to be of inferior value. The situation has changed within the last decades, and a wide-felt demand has arisen among all classes of people for a more economical and rational treatment of the existing forest lands, and for reestablishing forests on denuded areas. In the primeval forest the trees diseased because of fungous or insect attack were ignored. They were few in comparison with sound trees, and the price of a single tree was very low. At the present time, with a marked appreciation in the value Of timber, the agencies which injure trees for timber are of more immediate interest to the owners of woodlands. At this time the extent to which insects and fungi destroy trees can only be guessed at. Their work of destruction goes on silently here and there in the forest, and does not attract the attention of the casual Observer as do careless lumbering or forest fires. If the dead and dying trees in a forest could be collected, they would represent a con siderable percentage of the total forest. Forest fires are already not so common as they used to be, and the lumberman of today is beginning to understand that more can be realized from a given forest tract by rational treatment than by indiscriminate cutting. Insects and fungi, and other harmful agencies Of less importance, are being studied with the aim of arriving at a more complete understanding Of their manner of working. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Some Diseases Of New England Conifers
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Author : Hermann Von Schrenk
language : en
Publisher:
Release Date : 1900
Some Diseases Of New England Conifers written by Hermann Von Schrenk and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1900 with Conifers categories.
Some Diseases Of New England Conifers
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Author : Hermann Von Schrenk
language : en
Publisher:
Release Date : 1900
Some Diseases Of New England Conifers written by Hermann Von Schrenk and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1900 with Conifers categories.
Some Diseases Of New England C
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Author : Hermann 1873-1953 Von Schrenk
language : en
Publisher:
Release Date : 2016-08-29
Some Diseases Of New England C written by Hermann 1873-1953 Von Schrenk and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-08-29 with History categories.
Diseases Of Pacific Coast Conifers
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Author : Robert V. Bega
language : en
Publisher:
Release Date : 1978
Diseases Of Pacific Coast Conifers written by Robert V. Bega and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with Conifers categories.
Compendium Of Conifer Diseases
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Author : Everett M. Hansen
language : en
Publisher:
Release Date : 2018
Compendium Of Conifer Diseases written by Everett M. Hansen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with Conifers categories.
Producing Christmas trees is big business. Every year, growers in the United States and Canada deliver 30 to 40 million trees to consumers, earning $2 billion in revenue. Growers in Europe produce an additional 110 million trees, earning $1.64 billion. To prepare for future crops, growers also plant up to three times as many trees as they harvest every year. Bringing each crop to market involves years of intensive management. The critical information needed to manage diseases and disorders of all types of conifer trees is provided in Compendium of Conifer Diseases, Second Edition. Written by 102 experts from 18 countries, this new edition presents the modern world of forest pathology. Forests today grow under increasing stress from an ever-growing human population, newly identified and invasive species of pathogens, and a changing climate. And since publication of the first edition of this compendium in 1997, diagnostic tools have evolved considerably, enabling more precise identification of pathogens, greater understanding of population genetics, and better understanding of evolutionary relationships among various species. All of these factors are addressed in the new compendium.
Catalogue Of The Public Documents Of The Congress And Of All Departments Of The Government Of The United States For The Period From To
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Author :
language : en
Publisher:
Release Date :
Catalogue Of The Public Documents Of The Congress And Of All Departments Of The Government Of The United States For The Period From To written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on with Government publications categories.
Circular
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Author : United States. Dept. of Agriculture. Division of Publications
language : en
Publisher:
Release Date : 1906
Circular written by United States. Dept. of Agriculture. Division of Publications and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1906 with Agriculture categories.
Bibliographical Contributions
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Author : National Agricultural Library (U.S.)
language : en
Publisher:
Release Date : 1931
Bibliographical Contributions written by National Agricultural Library (U.S.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1931 with Agriculture categories.
Bibliographical Contributions United States Department Of Agriculture Library
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Author :
language : en
Publisher:
Release Date : 1919
Bibliographical Contributions United States Department Of Agriculture Library written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1919 with categories.