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Author: Ralph L. Anderson
Publisher:
ISBN:
Category : Oak wilt
Languages : en
Pages : 20
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Author:
Publisher:
ISBN:
Category : Oak
Languages : en
Pages : 32
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Author: Sherlock Melvin Dietz
Publisher:
ISBN:
Category : Oak
Languages : en
Pages : 28
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"In the past 5 years wilt has come to be recognized as the most important oak disease in the upper Mississippi valley. The disease has been reported from Iowa, Wisconsin, Minnesota, Missouri and Illinois. The fungus Chalara quercina Henry has been shown definitely the cause of the disease. Trees of the red oak group are killed quickly. Those of the white oak group may survive several years after infection with only a few branches being killed each year. All types of oak apparently are susceptible since all of the 28 species inoculated in the greenhouse were infected. The disease has been found on 9 of the 11 native species in Iowa. Infected trees have not been observed to recover from oak wilt. Prevention of spread of the disease has been attempted by various methods of sanitation. In general, removing diseased trees as soon as symptoms appear has been effective in stopping or retarding spread in state park and state forest test areas. Pruning experiments on trees that had only a few infected branches indicate that white oaks may often be saved by removal of such infected branches at a point well back of the latest symptoms. From injury, leaf blight and insect and rodent injury often result in leaf discoloration which from a distance may be mistaken for oak wilt." -- summary , p. 4
Author: Eugene Bryson Himelick
Publisher:
ISBN:
Category : Oak wilt
Languages : en
Pages : 56
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Author: Charles O. Rexrode
Publisher:
ISBN:
Category : Oak wilt
Languages : en
Pages : 6
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Author: Ralph L. Anderson
Publisher:
ISBN:
Category : Oak wilt
Languages : en
Pages : 20
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Author: Ralph L. Anderson
Publisher: Forgotten Books
ISBN: 9780365583189
Category : Business & Economics
Languages : en
Pages : 24
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Book Description
Excerpt from Oak Wilt Damage: A Survey in Central Wisconsin Although the seriousness of the disease is generally recognized, no efforts have been made in the past to evaluate quantitatively the ex tent of damage over large areas. All available evidence indicates that oak wilt has been present longest and is most prevalent in Minnesota, Wisconsin, and Iowa. The disease thus has had more Opportunity to cause damage in this area. For this reason Wisconsin was selected for an oak wilt damage survey. 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.
Author: Philip M. Wargo
Publisher:
ISBN:
Category : Oak
Languages : en
Pages : 16
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Author: T. F. Geary
Publisher:
ISBN:
Category : Auxin
Languages : en
Pages : 212
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Author: Robert L. Anderson
Publisher:
ISBN:
Category :
Languages : en
Pages : 11
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Author: John S. Boyce
Publisher:
ISBN:
Category :
Languages : en
Pages : 3
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