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Author:
Publisher:
ISBN:
Category : Administrative law
Languages : en
Pages : 284
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Author:
Publisher:
ISBN:
Category : Administrative law
Languages : en
Pages : 284
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Author: Jorge Fernandez-Cornejo
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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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.
Author:
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Category : Health risk assessment
Languages : en
Pages : 414
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Author: Jorge Fernandez-Cornejo
Publisher:
ISBN:
Category : Field crops
Languages : en
Pages : 92
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Author:
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ISBN:
Category : Ground-water management
Languages : en
Pages : 218
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Author: National Research Council
Publisher: National Academies Press
ISBN: 0309170176
Category : Technology & Engineering
Languages : en
Pages : 342
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Book Description
Transgenic crops offer the promise of increased agricultural productivity and better quality foods. But they also raise the specter of harmful environmental effects. In this new book, a panel of experts examines: • Similarities and differences between crops developed by conventional and transgenic methods • Potential for commercialized transgenic crops to change both agricultural and nonagricultural landscapes • How well the U.S. government is regulating transgenic crops to avoid any negative effects. Environmental Effects of Transgenic Plants provides a wealth of information about transgenic processes, previous experience with the introduction of novel crops, principles of risk assessment and management, the science behind current regulatory schemes, issues in monitoring transgenic products already on the market, and more. The book discusses public involvementâ€"and public confidenceâ€"in biotechnology regulation. And it looks to the future, exploring the potential of genetic engineering and the prospects for environmental effects.
Author: Inderjit
Publisher: Springer Science & Business Media
ISBN: 9401705526
Category : Science
Languages : en
Pages : 550
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Book Description
Weeds hold an enigmatic and sometimes-controversial place in agriculture, where they are generally reviled, grudgingly tolerated, and occasionally admired. In most cases, growers make considerable effort to reduce the negative economic impact of weeds because they compete with crops for resources and hinder field operations, thereby affecting crop productivity and quality, and ultimately the sustainability of agriculture. Weed control in production agriculture is commonly achieved through the integration of chemical, biological, and mechanical management methods. Chemicals (herbicides) usually inhibit the growth and establishment of weed plants by interfering with various physiological and biochemical pathways. Biological methods include crop competition, smother crops, rotation crops, and allelopathy, as well as specific insect predators and plant pathogens. Mechanical methods encompass an array of tools from short handled hoes to sophisticated video-guided robotic machines. Integrating these technologies, in order to relieve the negative impacts of weeds on crop production in a way that allows growers to optimize profits and preserve human health and the environment, is the science of weed management.
Author: Jorge Fernandez-Cornejo
Publisher:
ISBN:
Category : Bioengineered crops
Languages : en
Pages : 61
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Book Description
Use of crop biotechnology products, such as genetically engineered (GE) crops with input traits for pest management, has risen dramatically since commercial approval in the mid-1990s. This report addresses several of the economic dimensions regarding farmer adoption of bioengineered crops, including herbicidetolerant and insect-resistant varieties.
Author: Miguel A. Altieri
Publisher: Springer
ISBN:
Category : Science
Languages : en
Pages : 370
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Book Description
The chapters of this book describe the physiological, population and community ecology of weeds within agroecosystems, with the goal of recognizing details of relevant approaches for better weed management
Author: Rick H. Hudson
Publisher:
ISBN:
Category : Pesticides
Languages : en
Pages : 104
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Book Description
