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Author : Alan F. Hedlin
Publisher : victoria, b. c. : canadian forestry service
Page : 72 pages
File Size : 43,9 Mb
Release : 1974
Category : Beneficial insects
ISBN : MINN:31951P01104744W
Handbook covering the more important cone and seed pests on 15 BC tree species. Damage keys and illustrations are included, and prevention and control methods discussed.
Author : Frederick Paul Keen
Publisher : Unknown
Page : 180 pages
File Size : 41,8 Mb
Release : 1958
Category : Forest insects
ISBN : UVA:X030348545
Author : Jean J. Turgeon,Jonathan David Sweeney,Peter De Groot,Canadian Forest Service,Ontario Forest Research Institute
Publisher : [Sault Ste. Marie, Ont.] : Canadian Forest Service
Page : 142 pages
File Size : 51,5 Mb
Release : 2005
Category : Cones (Botany)
ISBN : MINN:31951D02863945I
Author : Anonim
Publisher : Unknown
Page : 1004 pages
File Size : 42,7 Mb
Release : 1957
Category : Agriculture
ISBN : UOM:39015081200621
Author : R. Parish,C. M. Johnson,G. Montgomery,A. Vyse,R. A. Willis,D. Winston,D.P. Lavender
Publisher : UBC Press
Page : 386 pages
File Size : 42,5 Mb
Release : 2011-11-01
Category : Nature
ISBN : 9780774844703
Regenerating British Columbia's Forests will assist those responsible for planning reforestation projects to reach informed decisions and will challenge them to consider primarily the biological factors basic to reforestation success rather than short-term costs and production technology. Although its main audience is practising foresters and forestry students of British Columbia, the text will be of considerable interest to foresters in other parts of Canada, the United States, and Europe who manage reforestation.
Author : Michelle J. A. (Michelle Julie Ann) Hall
Publisher : National Library of Canada = Bibliothèque nationale du Canada
Page : 236 pages
File Size : 40,8 Mb
Release : 1995
Category : Arachnida
ISBN : 0612169049
Author : Dorothy R. Barcia,Edward P. Merkel
Publisher : Unknown
Page : 84 pages
File Size : 52,5 Mb
Release : 1972
Category : Conifers
ISBN : MINN:31951D03001651L
Author : Robert N. Coulson,John A. Witter
Publisher : John Wiley & Sons
Page : 682 pages
File Size : 46,7 Mb
Release : 1984-05-14
Category : Nature
ISBN : 0471025739
This text considers forest insects occurring in forest ecosystems, specialized forestry settings, and urban forests, with an approach and coverage that make it suitable for use in both undergraduate and graduate courses in forest entomology and forest protection. Early chapters introduce entomology, middle chapters provide the first comprehensive treatment of the principles of Integrated Pest Management (IPM) of forest insects, and later chapters discuss the pest insects according to their feeding group.
Author : Alan A. Berryman
Publisher : Springer Science & Business Media
Page : 608 pages
File Size : 48,8 Mb
Release : 2013-06-29
Category : Science
ISBN : 9781489907899
Insects multiply. Destruction reigns. There is dismay, followed by outcry, and demands to Authority. Authority remembers its experts or appoints some: they ought to know. The experts advise a Cure. The Cure can be almost anything: holy water from Mecca, a Government Commis sion, a culture of bacteria, poison, prayers denunciatory or tactful, a new god, a trap, a Pied Piper. The Cures have only one thing in common: with a little patience they always work. They have never been known entirely to fail. Likewise they have never been known to prevent the next outbreak. For the cycle of abundance and scarcity has a rhythm of its own, and the Cures are applied just when the plague of insects is going to abate through its own loss of momentum. -Abridged, with insects in place of voles, from C. Elton, 1924, Voles, Mice and Lemmings, with permission of Oxford University Press This book is an enquiry into the "natural rhythms" of insect abundance in forested ecosystems and into the forces that give rise to these rhythms. Forests form unique environ ments for such studies because one can find them growing under relatively natural (pri meval) conditions as well as under the domination of human actions. Also, the slow growth and turnover rates of forested ecosystems enable us to investigate insect popula tion dynamics in a plant environment that remains relatively constant or changes only slowly, this in contrast to agricultural systems, where change is often drastic and frequent.
Author : Anonim
Publisher : Unknown
Page : 494 pages
File Size : 52,6 Mb
Release : 1978
Category : Forests and forestry
ISBN : UOM:39015017885859
Author : Robert F. Scharpf
Publisher : Unknown
Page : 380 pages
File Size : 49,7 Mb
Release : 1988
Category : Dwarf mistletoes
ISBN : MINN:31951D02881938D
Author : David Kolotelo,British Columbia. Tree Improvement Branch
Publisher : British Columbia, Tree Improvement Branch
Page : 106 pages
File Size : 41,7 Mb
Release : 2001-01-01
Category : Seeds
ISBN : 0772646589
Author : Jean J. Turgeon,Peter De Groot,Ontario. Ministry of Natural Resources,Canada. Forestry Canada
Publisher : [Sault Ste. Marie] : Ontario, Ministry of Natural Resources
Page : 112 pages
File Size : 41,6 Mb
Release : 1992
Category : Cones (Botany)
ISBN : MINN:31951D00893201S
This guide presents the principle components of seed orchard pest management, the development of a cone crop monitoring system, general guidelines and methods for monitoring, assessing impact, preventing and controlling cone and seed insects, the integration of cone management into a crop management program, and identification of damage caused by cone and seed insects of larch, pine, and spruce.
Author : Anonim
Publisher : Unknown
Page : 1240 pages
File Size : 40,6 Mb
Release : 2009
Category : Electronic
ISBN : MINN:31951D02850989J
Author : United States. Forest Service
Publisher : Forest Service
Page : 1240 pages
File Size : 49,7 Mb
Release : 2008
Category : Gardening
ISBN : MINN:30000009395322