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Author: Sherlock Melvin Dietz
Publisher:
ISBN:
Category : Oak
Languages : en
Pages : 28
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Book Description
"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: Sherlock Melvin Dietz
Publisher:
ISBN:
Category : Oak
Languages : en
Pages : 28
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Book Description
"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: James L. Brown
Publisher:
ISBN:
Category :
Languages : en
Pages : 21
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Book Description
Author: Terry A. Tattar
Publisher: Academic Press
ISBN: 1483269043
Category : Technology & Engineering
Languages : en
Pages : 380
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Book Description
Diseases of Shade Trees provides an introduction to tree diseases for students and others concerned with the care of shade and ornamental trees. Diseases of woody plants fall into two major categories: infectious diseases and noninfectious diseases. Part I of the book presents the infectious pathogens and the diseases they cause. These include bacteria, mycoplasmas, nematodes, seed plants, and viruses. The nature of the fungi is also presented, with separate chapters for leaf, root, rust, stem, and wilt diseases caused by fungi. Wound diseases, which are associated with both fungi and bacteria that invade wounds, are included in this section. Part II deals with noninfectious agents and the diseases they cause. Noninfectious agents are separated into environmental stress, animal injury, and people-pressure diseases. Diebacks and declines—complex diseases, which are often caused by a combination of both infectious and noninfectious agents are also included in this section. Part III on special topics includes discussions of nonpathogenic conditions often mistaken for diseases; diagnosis of tree diseases; and living hazard trees.
Author: Wayne A. Sinclair
Publisher: Ithaca, N.Y. : Comstock Pub. Associates
ISBN:
Category : Gardening
Languages : en
Pages : 584
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Book Description
Diseases of Trees and Shrubs is a comprehensive pictorial survey of the diseases of, as well as the environmental damage to, forest and shade trees and woody ornamental plants in the United States and Canada. An authoritative reference, it is also a reliable and handy diagnostic tool that will simplify the identification of specific plant diseases by focusing on signs and symptoms that can be seen with the unaided eye or with a hand lens. This long-needed book gives readers complete, up-to-date information in an easily understood and convenient way. Each of the 247 color plates faces a page of explanatory text covering the biology and ecology (including host and geographic ranges) of the disease-causing agents (pathogens), a list of key references (there are more than 2,250), and, in some cases, black-and-white illustrations of pathogens. Selected information about biological and cultural control is provided. Scientific terms other than Latin names of pathogens are used only when necessary, and a glossary of terms and a comprehensive index are included. The color plates contain more than 1,700 illustrations of the diseases and injuries that some 350 biological agents and environmental factors cause to more than 250 species of plants. The book also serves as a guide to hundreds of other diseases related to those shown. The authors have used three levels of organization for this book. At the first level, diseases caused by biological agents are separated from those caused by environmental stimuli. At the second level, most diseases are grouped according to the plant part affected: leaves, twigs, limbs, roots, trunks, or the entire plant. At the third level, diseases are presented according to the taxonomic relationships among the pathogens. For this major project, the authors examined and photographed diseases and environmental damage in the field, visiting more than 50 states and Canadian provinces. Their book reflects the most important developments in fungal biology and taxonomy, plant bacteriology, virology, and environmentally induced stress in plants. It summarizes information about newly discovered diseases and provides up-to-date accounts of olds ones. Diseases of Trees and Shrubs can be profitable reading for anyone whose technical training does not extend beyond general biology, yet will also be informative to advanced students and plant pathologists. It will be welcomed by agricultural and horticultural advisers, plant inspectors, arborists, nursery professionals, landscapers, foresters, and urban planners. Wayne A. Sinclair is a Professor of Plant Pathology, Howard H. Lyon is Biological Photographer (retired), Department of Plant Pathology, and Warren T. Johnson is Professor of Entomology, all at Cornell University.
Author:
Publisher:
ISBN:
Category : Oak
Languages : en
Pages : 2
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Book Description
Author: Robert C. Thatcher
Publisher:
ISBN:
Category : Conifers
Languages : en
Pages : 296
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Book Description
Author: Jill D. Pokorny
Publisher:
ISBN:
Category : Oak
Languages : en
Pages : 24
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Book Description
Author: George Henry Hepting
Publisher:
ISBN:
Category : Trees
Languages : en
Pages : 52
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Book Description
Author: Robert O. Blanchard
Publisher: Elsevier
ISBN: 1483288196
Category : Science
Languages : en
Pages : 389
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Book Description
The Second Edition of this classic text is completely up-to-date with new chapters, new information on diseases, updated citations, and revised taxonomy and terminology of the fungi, bacteria, and other organisms that affect trees. Field and Laboratory Guide to Tree Pathology presents field and laboratory techniques as well as basic information for students, foresters, plant scientists, and arboriculturalists on tree disease pathology. The revised edition includes expanded historical documentation, updated taxonomy and terminology for both pests and diseases, an entirely new introduction, new chapters on tree biology, general control strategies, and diagnostic techniques. A new section of color plates will help readers in the identification of tree pathogens. All the references have been comprehensively updated, and the exercises included for students have been revised, making this guide a useful tool for students, teachers, and practitioners interested in tree disease. Contains new chapters on tree biology, general control strategies, and diagnostic techniques Includes additional information on the histories of disease Provides thoroughly updated citations Contains comprehensively revised taxonomy and terminology
Author:
Publisher:
ISBN:
Category : Oak
Languages : en
Pages : 32
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Book Description
