Author: Publisher:
ISBN:
Category : Conservation of natural resources
Languages : en
Pages : 618
Book Description
Natural Resources Report
Author: Publisher:
ISBN:
Category : Conservation of natural resources
Languages : en
Pages : 618
Book Description
Restoration of American Chestnut to Forest Lands
Author: Kim C. SteinerPublisher:
ISBN:
Category : American chestnut
Languages : en
Pages : 250
Book Description
The Mountaineer Grower
Author: Bibliography of Agriculture
Author: Bulletin
Author: The Official Record of the United States Department of Agriculture
Author: United States. Department of AgriculturePublisher:
ISBN:
Category :
Languages : en
Pages : 190
Book Description
General Bulletin
Author: Pesticide Use in U.S. Agriculture
Author: Jorge Fernandez-CornejoPublisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
Pesticide use has changed considerably over the past five decades. Rapid growth characterized the first 20 years, ending in 1981. The total quantity of pesticides applied to the 21 crops analyzed grew from 196 million pounds of pesticide active ingredients in 1960 to 632 million pounds in 1981. Improvements in the types and modes of action of active ingredients applied along with small annual fluctuations resulted in a slight downward trend in pesticide use to 516 million pounds in 2008. These changes were driven by economic factors that determined crop and input prices and were influenced by pest pressures, environmental and weather conditions, crop acreages, agricultural practices (including adoption of genetically engineered crops), access to land-grant extension personnel and crop consultants, the cost-effectiveness of pesticides and other practices in protecting crop yields and quality, technological innovations in pest management systems/practices, and environmental and health regulations. Emerging pest management policy issues include the development of glyphosate-resistant weed populations associated with the large increase in glyphosate use since the late 1990s, the development of Bt-resistant western corn rootworm in some areas, and the arrival of invasive or exotic pest species, such as soybean aphid and soybean rust, which can influence pesticide use patterns and the development of Integrated Pest Management programs.
The Ohio Farmer
Author: Soft Scale Insects
Author: Publisher: Elsevier
ISBN: 0080541348
Category : Science
Languages : en
Pages : 477
Book Description
This text presents an up-to-date account of the soft-scale insects, "Coccidae", and covers almost the entire spectrum of the knowledge of this insect family. It is divided into three sections, covering: soft scale insects; their natural enemies; and damage and control.