Comparisons of Weed Management Systems on Conventional and Herbicide Resistant Corn PDF Download

Author: Jason S. Williams
Publisher:
ISBN:
Category : Corn
Languages : en
Pages : 56

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Author: Robert Zimdahl
Publisher: Burleigh Dodds Series in Agric
ISBN: 9781786761644
Category : Technology & Engineering
Languages : en
Pages : 476

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Book Description
Weeds remain a major obstacle to improved yields in agriculture. At the same time, established methods of control are being undermined by problems such as herbicide resistance. This major collection reviews key developments in integrated weed management (IWM) to manage weeds more sustainably.

Author: Robert L Zimdahl
Publisher: Elsevier
ISBN: 0123815029
Category : Science
Languages : en
Pages : 220

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Book Description
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: Nicholas E. Korres
Publisher: CRC Press
ISBN: 1351651978
Category : Science
Languages : en
Pages : 664

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Book Description
In light of public concerns about sustainable food production, the necessity for human and environmental protection, along with the evolution of herbicide resistant weeds, call for a review of current weed control strategies. Sustainable weed control requires an integrated approach based on knowledge of each crop and the weeds that threaten it. This book will be an invaluable source of information for scholars, growers, consultants, researchers and other stakeholders dealing with either arable, row, cash, vegetables, orchards or even grassland-based production systems. The uniqueness of this book comes from the balanced coverage of herbicide effects on humans and environment in relation to best weed control practices of the most important cropping systems worldwide. Furthermore, it amalgamates and discusses the most appropriate, judicious and suitable weed control strategies for a wide range of crops. It reviews the available information and suggests solutions that are not merely feasible but also optimal.

Author: Stephen L. Young
Publisher: Springer Science & Business Media
ISBN: 9400775121
Category : Technology & Engineering
Languages : en
Pages : 264

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Book Description
Technology is rapidly advancing in all areas of society, including agriculture. In both conventional and organic systems, there is a need to apply technology beyond our current approach to improve the efficiency and economics of management. Weeds, in particular, have been part of cropping systems for centuries often being ranked as the number one production cost. Now, public demand for a sustainably grown product has created economic incentives for producers to improve their practices, yet the development of advanced weed control tools beyond biotech has lagged behind. An opportunity has been created for engineers and weed scientists to pool their knowledge and work together to ‘fill the gap’ in managing weeds in crops. Never before has there been such pressure to produce more with less in order to sustain our economies and environments. This book is the first to provide a radically new approach to weed management that could change cropping systems both now and in the future.

Author: Karen A. Zuver
Publisher:
ISBN:
Category : Corn
Languages : en
Pages : 92

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Author: Adam Michael Striegel
Publisher:
ISBN:
Category : Corn
Languages : en
Pages : 92

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Book Description
With commercialization of multiple herbicide-resistant corn and soybean cultivars, producers have new management options for controlling herbicide-resistant weeds and volunteer corn. Corn-on-corn production systems are common in irrigated fields in southcentral Nebraska which can create issues with volunteer corn management in corn fields. Enlist corn contains a new multiple herbicide-resistant trait providing resistance to 2,4-D choline, glyphosate, and the aryloxyphenoxypropionate (FOPs). Field experiments were conducted in 2018 and 2019 at South Central Agricultural Laboratory near Clay Center, Nebraska with the objective to evaluate ACCase-inhibiting herbicides and herbicide application timing on volunteer corn control, Enlist corn injury, and yield. Glyphosate/glufosinate-resistant corn harvested the year prior was cross-planted at 49,000 seeds ha-1 to mimic volunteer corn in Enlist corn. Application timing of FOP herbicides had no effect on Enlist corn injury or yield, and provided 97-99% control of volunteer corn at 28 d after treatment (DAT). Clethodim and sethoxydim and pinoxaden provided 84-98% and 65-71% control of volunteer corn at 28 DAT, respectively; ii however, resulting in 62-96% Enlist corn injury and 69-98% yield reduction. While all FOP herbicides evaluated did not cause crop injury or yield loss, quizalofop is the only labeled product as of 2020 for control of volunteer corn in Enlist corn. Despite widespread adoption of dicamba/glyphosate-resistant soybean by producers in the United States, economic information comparing herbicide programs in glufosinateresistant and conventional soybean is not available. Field experiments were conducted in 2018 and 2019 at five locations across Nebraska to evaluate weed control, crop safety, gross profit margin, and benefit-cost ratios of herbicide programs with three unique sites of action in multiple herbicide-resistant and conventional soybean. Herbicides applied pre-emergence (PRE) that included provided 85-99% control for all weed species, and 72-96% weed biomass reductions at all locations. Herbicides applied POST provided 93- 99% control for all weed species, and 89-98% weed biomass reduction 28 DAT. For individual site-years, yield was similar for many herbicide programs in herbicideresistant and conventional systems. Gross profit margins and benefit-cost ratios were higher in herbicide-resistant systems than conventional systems, although price premiums for conventional soybean can help compensate increased herbicide costs.

Author: David William Fischer
Publisher:
ISBN:
Category :
Languages : en
Pages : 406

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Author:
Publisher: UCANR Publications
ISBN: 1601073925
Category :
Languages : en
Pages : 14

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Book Description
Conservation tillage is an approach to soil management that balances the short-term need for a profitable crop with the long-term need for sustainably healthy ground. This publication looks at ways to control weeds while practicing conservation tillage.

Author: Robert Zimdahl
Publisher: Academic Press
ISBN: 0323149421
Category : Technology & Engineering
Languages : en
Pages : 465

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Book Description
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.