The Economics Of Glyphosate Resistance Management In Corn And Soybean Production
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The Economics Of Glyphosate Resistance Management In Corn And Soybean Production
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Author : Michael J. Livingston
language : en
Publisher:
Release Date : 2015
The Economics Of Glyphosate Resistance Management In Corn And Soybean Production written by Michael J. Livingston and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with Corn categories.
Glyphosate, known by many trade names, including Roundup, is a highly effective herbicide. Widespread glyphosate use for corn and soybean has led to glyphosate resistance, which is now documented in 14 weed species affecting U.S. cropland, and recent surveys suggest that acreage with glyphosate-resistant (GR) weeds is expanding. Data from USDA's Agricultural Resource Management Survey (ARMS), along with the Benchmark Study (conducted independently by plant scientists), are used to address several issues raised by the spread of GR weeds. Choices made by growers that could help manage glyphosate resistance include using glyphosate during fewer years, combining it with one or more alternative herbicides, and, most importantly, not applying glyphosate during consecutive growing seasons. As a result, managing glyphosate resistance is more cost effective than ignoring it, and after about 2 years, the cumulative impact of the returns received is higher when managing instead of ignoring resistance.
The Economics Of Glyphosate Resistance Management In Corn And Soybean Production
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Author : Michael Livingston
language : en
Publisher: CreateSpace
Release Date : 2015-05-21
The Economics Of Glyphosate Resistance Management In Corn And Soybean Production written by Michael Livingston and has been published by CreateSpace this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-05-21 with categories.
Glyphosate, known by many trade names, including Roundup, is a highly effective herbicide. Widespread glyphosate use for corn and soybean has led to glyphosate resistance, which is now documented in 14 weed species affecting U.S. cropland, and recent surveys suggest that acreage with glyphosate-resistant (GR) weeds is expanding. Data from USDA's Agricultural Resource Management Survey (ARMS), along with the Benchmark Study (conducted independently by plant scientists), are used to address several issues raised by the spread of GR weeds. Choices made by growers that could help manage glyphosate resistance include using glyphosate during fewer years, combining it with one or more alternative herbicides, and, most importantly, not applying glyphosate during consecutive growing seasons. As a result, managing glyphosate resistance is more cost effective than ignoring it, and after about 2 years, the cumulative impact of the returns received is higher when managing instead of ignoring resistance.
The Economics Of Glyphosate Resistance Management In Corn And Soybean Production
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Author : United States Department of Agriculture
language : en
Publisher: CreateSpace
Release Date : 2015-07-08
The Economics Of Glyphosate Resistance Management In Corn And Soybean Production written by United States Department of Agriculture and has been published by CreateSpace this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-07-08 with categories.
Glyphosate, known by many trade names, including Roundup, is a highly effective herbicide. Widespread glyphosate use for corn and soybean has led to glyphosate resistance, which is now documented in 14 weed species affecting U.S. cropland, and recent surveys suggest that acreage with glyphosate-resistant (GR) weeds is expanding. Data from USDA's Agricultural Resource Management Survey (ARMS), along with the Benchmark Study (conducted independently by plant scientists), are used to address several issues raised by the spread of GR weeds. Choices made by growers that could help manage glyphosate resistance include using glyphosate during fewer years, combining it with one or more alternative herbicides, and, most importantly, not applying glyphosate during consecutive growing seasons. As a result, managing glyphosate resistance is more cost effective than ignoring it, and after about 2 years, the cumulative impact of the returns received is higher when managing instead of ignoring resistance.
Control Of Volunteer Corn In Enlist Corn And Economics Of Herbicide Programs In Conventional And Multiple Herbicide Resistant Soybean Systems Across Nebraska
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Author : Adam Michael Striegel
language : en
Publisher:
Release Date : 2020
Control Of Volunteer Corn In Enlist Corn And Economics Of Herbicide Programs In Conventional And Multiple Herbicide Resistant Soybean Systems Across Nebraska written by Adam Michael Striegel and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with Corn categories.
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.
Glyphosate Resistance In Crops And Weeds
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Author : Vijay K. Nandula
language : en
Publisher: John Wiley & Sons
Release Date : 2010-12-28
Glyphosate Resistance In Crops And Weeds written by Vijay K. Nandula and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-12-28 with Science categories.
New technologies are becoming available for managing glyphosate resistant (GR) weeds and reducing their spread. GR crop technology has revolutionized crop production in the developed world and the benefits are gradually spilling over to the developing world. In order to sustain an effective, environmentally safe herbicide such as glyphosate and the GR crop technology well in to the future, it is imperative that the issue of GR weeds be comprehensively understood. This book provides such an essential, up-to-date source of information on glyphosate resistance for researchers, extension workers, land managers, government personnel, and other decision makers. Provides comprehensive coverage of the intensely studied topic of glyphosate resistant (GR) in crops Details the development of glyphosate resistance and how to detect and manage the problem in crops Helps standardize global approaches to glyphosate resistance Encompasses interdisciplinary approaches in chemistry, weed science, biochemistry, plant physiology, plant biotechnology, genetics, ecology Includes a chapter on economic analysis of GR impact on crops
Herbicide Resistant Crops
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Author : Stephen O. Duke
language : en
Publisher: CRC Press
Release Date : 2018-01-18
Herbicide Resistant Crops written by Stephen O. Duke and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-01-18 with Science categories.
Edited by a recognized leader in the field, Herbicide-Resistant Crops is the first book to cover all of the issues related to the controversial topic of herbicide-resistant crops. It provides extensive discussions of the modern biotechnological methods that have been used to develop such crops, and reviews the implications - both positive and negative - of developing crops that are resistant to herbicides. The creation and anticipated applications of specific herbicide-resistant crops are also discussed. In addition, the book covers the potential impact of herbicide-resistant crops on weed management practices and the environment, and presents issues related to the regulation and economics of these crops. The editor has brought together a diverse group of professionals, representing the several distinct areas impacted by the new technology of herbicide-resistant crops. The wide range of viewpoints presented in this book creates a balanced and complete survey, providing a notable contribution to the literature.
To Spray Or Not To Spray
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Author : Braeden Van Deynze
language : en
Publisher:
Release Date : 2020
To Spray Or Not To Spray written by Braeden Van Deynze and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with Electronic dissertations categories.
The protection of crops from insect pests and weeds is fundamentally a problem of ecological management. Modern pesticides used to perform such management are essential to efficient production of corn and soybean, the two most widely grown crops in the United States. What pesticides are sprayed where, when, and by whom is both shaped by and shapes ecological conditions. This dissertation consists of three essays on how American corn and soybean growers make insect and weed management decisions, and the impacts of these decisions on the environment.The first essay measures the impact of glyphosate-resistant weeds on farmers' tillage practices using field-level data from across the United States, demonstrating how selection pressure within weed populations can limit the long-term benefits of pesticide technologies. Using a two-stage, panel data econometric model, we estimate that the spread of glyphosate-resistant weeds has led to reduction in the adoption of conservation tillage by soybean growers by as much as 8.5 percentage points. Nationally, we estimate that the reduction in conservation tillage adoption due to glyphosate-resistant weeds has increased soil erosion into water ways by over 65 million metric tons and carbon emissions due to fuel consumption by 226,000 metric tons.The second essay measures the impact of farmers' pesticide use on butterfly abundance. By examining a full suite of pesticides in a single model, we account for substitution effects between products. We find neonicotinoids, the most widely used class of insecticides, have a detrimental impact on butterfly populations, both in aggregate and for prominent species such as Monarchs. Overall, our results show that changes in pesticide use between 1998 and 2014 accounted for a 9% decrease in total butterfly abundance.Finally, the third essay examines farmers' decisions to custom hire to spray insecticides rather than performing such field tasks on their own. Using a pilot choice experiment, we demonstrate how the value farmers place on timeliness when custom hiring varies according to farmer characteristics. We find risk-averse farmers are more sensitive to potential delays, while those with more developed social networks are less sensitive.
Genetically Engineered Crops
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Author : National Academies of Sciences, Engineering, and Medicine
language : en
Publisher: National Academies Press
Release Date : 2017-01-28
Genetically Engineered Crops written by National Academies of Sciences, Engineering, and Medicine and has been published by National Academies Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-01-28 with Science categories.
Genetically engineered (GE) crops were first introduced commercially in the 1990s. After two decades of production, some groups and individuals remain critical of the technology based on their concerns about possible adverse effects on human health, the environment, and ethical considerations. At the same time, others are concerned that the technology is not reaching its potential to improve human health and the environment because of stringent regulations and reduced public funding to develop products offering more benefits to society. While the debate about these and other questions related to the genetic engineering techniques of the first 20 years goes on, emerging genetic-engineering technologies are adding new complexities to the conversation. Genetically Engineered Crops builds on previous related Academies reports published between 1987 and 2010 by undertaking a retrospective examination of the purported positive and adverse effects of GE crops and to anticipate what emerging genetic-engineering technologies hold for the future. This report indicates where there are uncertainties about the economic, agronomic, health, safety, or other impacts of GE crops and food, and makes recommendations to fill gaps in safety assessments, increase regulatory clarity, and improve innovations in and access to GE technology.
Adoption Of Bioengineered Crops
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Author : Jorge Fernandez-Cornejo
language : en
Publisher:
Release Date : 2002
Adoption Of Bioengineered Crops written by Jorge Fernandez-Cornejo and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Bioengineered crops categories.
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.
Soybean
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Author : Hany El-Shemy
language : en
Publisher: BoD – Books on Demand
Release Date : 2011-11-02
Soybean written by Hany El-Shemy and has been published by BoD – Books on Demand this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-11-02 with Science categories.
Worldwide, soybean seed proteins represent a major source of amino acids for human and animal nutrition. Soybean seeds are an important and economical source of protein in the diet of many developed and developing countries. Soy is a complete protein and soyfoods are rich in vitamins and minerals.Soybean protein provides all the essential amino acids in the amounts needed for human health. Recent research suggests that soy may also lower risk of prostate, colon and breast cancers as well as osteoporosis and other bone health problems and alleviate hot flashes associated with menopause. This volume is expected to be useful for student, researchers and public who are interested in soybean.
