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Author: Sherlock Melvin Dietz Publisher: ISBN: Category : Oak Languages : en Pages : 28
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: Douglas W. Tallamy Publisher: Timber Press ISBN: 1643260448 Category : Nature Languages : en Pages : 201
Book Description
“A timely and much needed call to plant, protect, and delight in these diverse, life-giving giants.” —David George Haskell, author of The Forest Unseen and The Songs of Trees With Bringing Nature Home, Doug Tallamy changed the conversation about gardening in America. His second book, the New York Times bestseller Nature’s Best Hope, urged homeowners to take conservation into their own hands. Now, he is turning his advocacy to one of the most important species of the plant kingdom—the mighty oak tree. Oaks sustain a complex and fascinating web of wildlife. The Nature of Oaks reveals what is going on in oak trees month by month, highlighting the seasonal cycles of life, death, and renewal. From woodpeckers who collect and store hundreds of acorns for sustenance to the beauty of jewel caterpillars, Tallamy illuminates and celebrates the wonders that occur right in our own backyards. He also shares practical advice about how to plant and care for an oak, along with information about the best oak species for your area. The Nature of Oaks will inspire you to treasure these trees and to act to nurture and protect them.
Author: Laurence Raleigh Costello Publisher: UCANR Publications ISBN: 1601076800 Category : Architecture Languages : en Pages : 225
Book Description
This publication offers a comprehensive look at the management of oaks in urban areas. As development moves into oak woodland areas, more and more oaks are becoming "urban" oaks. Oaks are highly valued in urban areas for their aesthetic, environmental, economic and cultural benefits. However, significant impacts to the health and structural stability of oaks have resulted from urban encroachment. Changes in environment, incompatible cultural practices, and pest problems can all lead to the early demise of our stately oaks. Using this book you'll learn how to effectively manage and protect oaks in urban areas - existing oaks as well as the planting of new oaks. Three key areas are addressed: selection, care, and preservation. You'll learn how cultural practices, pest management, risk management, preservation during development, and genetic diversity can all play a role in preserving urban oaks. Arborists, urban foresters, landscape architects, planners and designers, golf course superintendents, academics, and Master Gardeners alike will find this to be an invaluable reference guide.
Author: Tedmund J. Swiecki Publisher: ISBN: 9781304145451 Category : Science Languages : en Pages : 0
Book Description
FULL COLOR and Enlarged Edition - California has more than twenty-five native species, natural hybrids, and varieties of oaks (Quercus species). The form of these oaks ranges from large trees, up to about 25 m tall, to shrubs no taller than about 1.5 m. California's native oaks include representatives of three oak subgroups or subgenera (Table 1). Hybridization only occurs between oaks in the same subgroup. In addition, some insects, pathogens, and other agents may selectively colonize or damage oaks in certain subgroups.
Author: Christopher Newrith Publisher: CRC Press ISBN: 1444113380 Category : Medical Languages : en Pages : 388
Book Description
People with personality disorder who offend tend to be neglected by health services in most countries. In the UK, there has been renewed interest in the field since government initiatives in the end of the 1990s. Government proposals themselves are controversial, but there is growing recognition that it is unsafe, both for the general public and fo