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Author : Dennis R. Hamel
Publisher : Unknown
Page : 12 pages
File Size : 55,5 Mb
Release : 1987
Category : Forest management
ISBN : MINN:31951002948344A
Author : Dennis R. Hamel
Publisher : Unknown
Page : 668 pages
File Size : 48,9 Mb
Release : 1983
Category : Forest insects
ISBN : STANFORD:36105113718030
Author : British Columbia. Ministry of Forests. Information Services Branch
Publisher : Unknown
Page : 1 pages
File Size : 49,6 Mb
Release : 1984
Category : Electronic
ISBN : 0771999372
Author : Dennis R. Hamel
Publisher : Unknown
Page : 512 pages
File Size : 47,8 Mb
Release : 1981
Category : Forest insects
ISBN : OCLC:16739136
Author : Ian Willoughby,Colin Palmer
Publisher : Unknown
Page : 52 pages
File Size : 50,7 Mb
Release : 1997
Category : Christmas tree growing
ISBN : MINN:31951D01632811C
Author : Robert F. Tarrant,H. Gratkowski,William E. Waters
Publisher : Unknown
Page : 16 pages
File Size : 47,8 Mb
Release : 1973
Category : Forest management
ISBN : MINN:31951D02964435T
As a result of an increasing population, our reduced acreage of forest land will be called upon to produce maximum amounts of wood fiber, to satisfy an ever-increasing demand for recreational use, and to produce maximum amounts of clean, pure water. Under such demands, forestry must be practiced with an intensity that is beyond our ability to conceive at present. Of necessity, every tool, including chemicals, must be used in this intensive management for the good of mankind. To achieve these aims, it will be also necessary that we quickly acquire a detailed and intimate knowledge concerning the interactions that occur within forest ecosystemsnot only natural interactions among plants, but also those that occur when we artificially induce changes in structure or composition in communities or ecosystems by artificial means. Such changes may not only affect vegetation; they may also affect atmospheric, wildlife, and microbiological conditions as well. Chemicals are useful, necessary tools for helping to meet needs for food, wood fiber, and water, while man readjusts his numbers and modes of life to the rapidly dwindling resources of the earth. The more selective, less persistent chemicals will continue to play an important role in forest resource management, probably for several decades. However, chemical use must eventually be minimized, for it is simply a system of treating symptoms of unhealthy ecological conditions created by nature or man in the past. Technological, environmental, and socioeconomic factors will add new dimensions to chemical use, placing greater demands on the research and development process. Our pressing need, aside from solutions to problems of population pressures and extravagance in natural resource use, is rapid development of the ecological knowledge necessary to manage and maintain a healthy biosphere with minimum use of chemical tools.
Author : Dennis R. Hamel
Publisher : Unknown
Page : 645 pages
File Size : 44,7 Mb
Release : 1983
Category : Electronic
ISBN : OCLC:223639649
The role of pesticides in integrated forest pest management. Insect management. Disease management. Vegetation management. Animal-damage management. Pesticide research. Pesticide reference guides. Fungicides and nematicides. Herbicides. Animal-damage management chemicals.
Author : Ian Willoughby
Publisher : Unknown
Page : 156 pages
File Size : 49,6 Mb
Release : 2004
Category : Forest insects
ISBN : STANFORD:36105122172823
Author : British Columbia. Ministry of Forests
Publisher : Unknown
Page : 11 pages
File Size : 53,5 Mb
Release : 1983
Category : Forest management
ISBN : 0771992084
Author : Anonim
Publisher : Unknown
Page : 56 pages
File Size : 45,9 Mb
Release : 1994
Category : Agricultural pests
ISBN : MINN:31951D01092004B
Author : STEVE H. DREISTADT
Publisher : UCANR Publications
Page : 356 pages
File Size : 53,9 Mb
Release : 2013-12-16
Category : Study Aids
ISBN : 9781601078308
"Weed and animal pest control in forest areas and rights-of-way"--Provided by publisher.
Author : J.J. Picot,D.D. Kristmanson
Publisher : Springer Science & Business Media
Page : 225 pages
File Size : 45,9 Mb
Release : 2012-12-06
Category : Technology & Engineering
ISBN : 9789401156349
Introduced to the technical aspects of forestry aerial spraying in the mid-1970's, we were immediately impressed by the complexity of the process of delivering pesticide to foliage. At that time, there was a vigorous public debate in New Brunswick about the ecological and public h~alth impacts of the annual spray program for the control of defoliation of spruce and fir trees by the spruce budworm. The forest industry is important to the province and changes to the established procedures of budworm control could have major economic implications. A rational debate required reliable information about the mechanics of the spraying process. There was a need to supply missing information as to required pesticide application rates, atomizer performance, off-target drift and deposit, and the effects of weather and aircraft operating factors. We were invited to initiate a research program in this domain by New Brunswick forest management officials, and what follows in this book is a logical and quantitative description of the overall process based on our own research and that of others over the intervening years. After a short introduction to aerial spraying, we begin (Chapter 2) by describing forest stands in terms of their interaction with suspended atmospheric particulate material carried along by the wind and susceptible to deposition on foliage. We introduce foliage simulators and their use in measuring the deposit of sprayed pesticide on foliage, the "biological interface" between pest and pesticide.
Author : J. R. Aldhous
Publisher : Unknown
Page : 610 pages
File Size : 55,8 Mb
Release : 2000
Category : Nature
ISBN : STANFORD:36105025154001
This volume provides an account of the pesticides and fertilisers used in forestry today. Government regulations relating to the use of pesticides and fertilisers are included, and safety and environmental aspects are discussed.
Author : Joseph W. Lewis
Publisher : Unknown
Page : 64 pages
File Size : 44,7 Mb
Release : 1992
Category : Forest management
ISBN : MINN:31951D02179606H
Author : Ian Willoughby,Jim Dewar
Publisher : Unknown
Page : 336 pages
File Size : 50,6 Mb
Release : 1995
Category : Nature
ISBN : MINN:31951D01265870R
If used correctly, herbicides can be of considerable assistance in establishing new woodlands and in re-stocking old ones. This edition of the field book aims to assist managers in safe and effective vegetation management. It retains the same layout and general contents of previous editions, but is updated to take into account herbicide and applicator innovations, as well as commercial and statutory withdrawal of products. The major difference from previous editions is that all herbicides with full forestry approval are included. A list of all products with forestry approval is also given. In addition, there is a section on the use of herbicides in farm forestry situations. Useful wall charts covering the use of herbicides in the forest and post- and pre-planting over a year are inserted loose.