Author: Publisher:
ISBN:
Category : Agricultural estimating and reporting
Languages : en
Pages : 632
Book Description
A Technical Description of the Large Area Crop Inventory Experiment (LACIE)
Author: Publisher:
ISBN:
Category : Agricultural estimating and reporting
Languages : en
Pages : 632
Book Description
Foreign Agriculture
Author: Agricultural and Industrial Progress in Canada
Author: Quarterly Bulletin of Agricultural Statistics
Author: Canada. Dominion Bureau of StatisticsPublisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 408
Book Description
Agricultural Gazette of Canada
Author: Canada. Dept. of AgriculturePublisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 1180
Book Description
Canada, Statistical Abstract and Record
Author: Irrigation
Author: United States. Bureau of Agricultural EngineeringPublisher:
ISBN:
Category : Irrigation
Languages : en
Pages : 636
Book Description
Report of the Board of Transport Commissioners for Canada for the Year Ended ...
Author: Board of Transport Commissioners for CanadaPublisher:
ISBN:
Category : Transportation
Languages : en
Pages : 682
Book Description
Saskatchewan
Author: Bernard D. ThravesPublisher: University of Regina Press
ISBN: 9780889771895
Category : Business & Economics
Languages : en
Pages : 552
Book Description
Saskatchewan: Geographic Perspectives is Saskatchewan's first comprehensive geography textbook. Its major sections cover these themes: Physical Geography, Historical and Cultural Geography, Population and Settlement, and Economic Geography. Eighteen chapters provide an excellent overview of the province from a variety of geographic perspectives, while twenty-nine focus studies explore specific topics in depth ... presents the work of forty-three scholars and is well-illustrated, with more than 150 figures, 70 tables, and over 60 full-colour plates. It also includes full reference lists and a comprehensive index. Although prepared specifically for use in post-secondary geography programs, this book is also appropriate for high school research projects and for anyone interested in the many facets of this vast and varied province."--Googlebooks.
Grasshoppers and Grassland Health
Author: Jeffrey A. LockwoodPublisher: Springer Science & Business Media
ISBN: 9401143374
Category : Science
Languages : en
Pages : 236
Book Description
Acridids (grasshoppers and locusts) can range from being rare curiosities to abundant menaces. Some are threatened with extinction and become subjects of intensive conservation efforts, while others are devastating pests and become the objects of massive control programmes. Even within a species, there are times when the animal is so abundant that its crushed masses cause the wheels of trains to skid (the Rocky Mountain grasshopper, Melanoplus spretus Walsh in western North America in the 1860s and I 870s), while at other times the animal is alarmingly scarce (the Rocky Mountain grasshopper went extinct in the early 1900s). Why are there these extremes in one insect family, and even in a single species? The NATO workshop examined this paradox and its implications for Environmental Security, which must address both the elements of land use (agricultural production and pest management) and conservation of biodiversity. The reconciliation of these objectives clearly demands a critical assessment of current knowledge and policies, identification of future research, and close working relationships among scientists. Insects can present two clear faces, as well as the intervening gradation. These extremes require us to respond in two ways: conservation of scarce species and suppression of abundant (harmful) species. But perhaps most important, these opposite poles also provide the opportunity for an exchange of information and insight.