[PDF] Weed Technology eBook

Author : Robert L Zimdahl
Publisher : Elsevier
Page : 220 pages
File Size : 16,64 MB
Release : 2010-02-04
Category : Science
ISBN : 0123815029

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It is important that scientists think about and know their history - where they came from, what they have accomplished, and how these may affect the future. Weed scientists, similar to scientists in many technological disciplines, have not sought historical reflection. The technological world asks for results and for progress. Achievement is important not, in general, the road that leads to achievement. What was new yesterday is routine today, and what is described as revolutionary today may be considered antiquated tomorrow. Weed science has been strongly influenced by technology developed by supporting industries, subsequently employed in research and, ultimately, used by farmers and crop growers. The science has focused on results and progress. Scientists have been--and the majority remain--problem solvers whose solutions have evolved as rapidly as have the new weed problems needing solutions. In a more formal sense, weed scientists have been adherents of the instrumental ideology of modern science. That is an analysis of their work, and their orientation reveals the strong emphasis on practical, useful knowledge; on know how. The opposite, and frequently complementary orientation, that has been missing from weed science is an emphasis on contemplative knowledge; that is, knowing why. This book expands on and analyzes how these orientations have affected weed science’s development. The first analytical history of weed science to be written Compares the development of weed science, entomology and plant pathology Identifies the primary founders of weed science and describes their role

Author : Robert Zimdahl
Publisher : Academic Press
Page : 465 pages
File Size : 16,1 MB
Release : 2012-12-02
Category : Technology & Engineering
ISBN : 0323149421

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Fundamentals of Weed Science provides an introduction to the basic principles of weed science for undergraduate courses. It discusses several aspects of weed biology and control, and traces the history of herbicide development. The book begins with an introduction to weeds, covering their definition, characteristics, harmful aspects, and the cost of weed control. This is followed chapters on weed classification, the uses of weeds, weed biology, weed ecology, allelopathy, the significance of plant competition, weed management and control methods, and biological weed control. Later chapters deal with herbicidesthe most important weed control tools and the ones with the greatest potential for untoward effects. Students of weed science must understand herbicides and the factors governing their use as well as the potential for misuse. These chapters discuss chemical weed control, the properties and uses of herbicides, factors affecting herbicide performance, herbicide application, herbicide formulation, ecological impact of herbicides, pesticide registration and legislation, weed management systems, and the future of weed science.

Author : Khawar Jabran
Publisher : Academic Press
Page : 174 pages
File Size : 17,39 MB
Release : 2018-01-03
Category : Science
ISBN : 0128098821

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Non-Chemical Weed Control is the first book to present an overview of plant crop protection against non-food plants using non-chemical means. Plants growing wild—particularly unwanted plants found in cultivated ground to the exclusion of the desired crop—have been treated with herbicides and chemical treatments in the past. As concern over environmental, food and consumer safety increases, research has turned to alternatives, including the use of cover crops, thermal treatments and biotechnology to reduce and eliminate unwanted plants. This book provides insight into existing and emerging alternative crop protection methods and includes lessons learned from past methodologies. As crop production resources decline while consumer concerns over safety increase, the effective control of weeds is imperative to insure the maximum possible levels of soil, sunlight and nutrients reach the crop plants. Allows reader to identify the most appropriate solution based on their individual use or case Provides researchers, students and growers with current concepts regarding the use of modern, environment-friendly weed control techniques Presents methods of weed management—an important part of integrated weed management in the future Exploits the knowledge gained from past sustainable weed management efforts

Author : Ryan Stoa
Publisher : MIT Press
Page : 253 pages
File Size : 20,45 MB
Release : 2018-11-13
Category : Political Science
ISBN : 0262038862

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How the future of post-legalization marijuana farming can be sustainable, local, and artisanal. What will the marijuana industry look like as legalization spreads? Will corporations sweep in and create Big Marijuana, flooding the market with mass-produced weed? Or will marijuana agriculture stay true to its roots in family farming, and reflect a sustainable, local, and artisanal ethic? In Craft Weed, Ryan Stoa argues that the future of the marijuana industry should be powered by small farms—that its model should be more craft beer than Anheuser-Busch. To make his case for craft weed, Stoa interviews veteran and novice marijuana growers, politicians, activists, and investors. He provides a history of marijuana farming and its post-hippie resurgence in the United States. He reports on the amazing adaptability of the cannabis plant and its genetic gifts, the legalization movement, regulatory efforts, the tradeoffs of indoor versus outdoor farms, and the environmental impacts of marijuana agriculture. To protect and promote small farmers and their communities, Stoa proposes a Marijuana Appellation system, modeled after the wine industry, which would provide a certified designation of origin to local crops. A sustainable, local, and artisanal farming model is not an inevitable future for the marijuana industry, but Craft Weed makes clear that marijuana legalization has the potential to revitalize rural communities and the American family farm. As the era of marijuana prohibition comes to an end, now is the time to think about what kind of marijuana industry and marijuana agriculture we want. Craft Weed will help us plan for a future that is almost here.

Author : Janis Mc Farland Ph.D.
Publisher : Elsevier
Page : 604 pages
File Size : 41,87 MB
Release : 2011-08-19
Category : Technology & Engineering
ISBN : 0080559638

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Over the past 50 years, triazines have made a great impact on agriculture and world hunger by assisting in the development of new farming methods, providing greater farming and land use capabilities, and increasing crop yields. Triazines are registered in over 80 countries and save billions of dollars a year. The Triazine Herbicides is the one book that presents a comprehensive view of the total science and agriculture of these chemicals. With emphasis on how the chemicals are studied and developed, reviewed, and used at the agricultural level this book provides valuable insight into the benefits of triazine herbicides for sustainable agriculture. Presents previously unpublished information on the discovery, development and marketing of herbicides Includes a vital section on the origin, use, economics and fate of triazine herbicides Covers benefits of triazines in corn and sorghum, sugarcane, citrus, fruit and nut crops Establishes best management practice and environmental benefits of use in conservation tillage

Author : Mahesh K. Upadhyaya
Publisher : CABI
Page : 249 pages
File Size : 49,54 MB
Release : 2007-01-01
Category : Technology & Engineering
ISBN : 1845932900

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This book deals with the principles, concepts, technology, potential, limitations and impacts of various non-chemical weed management options. It contains 12 chapters discussing topics on prevention strategies in weed management, exploitation of weed crop interactions to manage weed problems, cultural methods, cover crops, allelopathy, classical biological control using phytophagous arthropods, bioherbicides (such as mycoherbicides), mechanical weed control, non-living mulches, thermal weed control and soil solarization.