Download or read book Determining the Fit of Dicamba Resistant Soybean for Ontario Agriculture written by Matthew Underwood and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Prior to the launch of Roundup Ready Xtend soybean, a genetically modified soybean with transgenes that express resistance to glyphosate and dicamba, several knowledge gaps existed regarding weed control, tank-mix compatibility, profitability, and environmental impact. The addition of dicamba (300 or 600 g ae ha-1) to quizalofop-p-ethyl (24, 30, or 36 g ai ha-1) or clethodim (30, 37.5 or 45 g ai ha-1), applied postemergence (POST), reduced the control of glyphosate-resistant volunteer corn by 11 to 20%, however, the antagonism could be overcome by increasing the rate of graminicide 25-50%. The addition of dicamba (600 g ae ha-1) to glyphosate (900 g ae ha-1), applied POST, increased broadleaf weed control by 3 to 14% 8 weeks after application (WAA). Dicamba, applied POST, provided poor control of grasses resulting in soybean seed yield loss of 30 to 33% compared to dicamba plus glyphosate. When applied preemergence (PRE) in a conventional tillage production system, dicamba (600 g ae ha-1) provided similar control of annual broadleaf weeds compared to several industry standards. Dicamba provided poorer broadleaf weeds in no-till production systems than several pre-plant (PP) herbicides which provided good to excellent control of broadleaf and grass weed species. The reduced broadleaf weed control with dicamba was likely due to the short residual activity in the soil.
Download or read book Genetically Engineered Crops written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2017-01-28 with total page 607 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Managing Cover Crops Profitably 3rd Ed written by Andy Clark and published by DIANE Publishing. This book was released on 2008-07 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cover crops slow erosion, improve soil, smother weeds, enhance nutrient and moisture availability, help control many pests and bring a host of other benefits to your farm. At the same time, they can reduce costs, increase profits and even create new sources of income. You¿ll reap dividends on your cover crop investments for years, since their benefits accumulate over the long term. This book will help you find which ones are right for you. Captures farmer and other research results from the past ten years. The authors verified the info. from the 2nd ed., added new results and updated farmer profiles and research data, and added 2 chap. Includes maps and charts, detailed narratives about individual cover crop species, and chap. about aspects of cover cropping.
Download or read book Weed and Crop Resistance to Herbicides written by Rafael de Prado and published by Springer Science & Business Media. This book was released on 1997-05-31 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent decades, repeated use of herbicides in the same field has imposed selection for resistance in species that were formerly susceptible. On the other hand, considerable research in the private and public sectors has been directed towards introducing herbicide tolerance into susceptible crop species. The evolution of herbicide resistance, understanding its mechanisms, characterisation of resistant weed biotypes, development of herbicide-tolerant crops and management of resistant weeds are described throughout the 36 chapters of this book. It has been written by leading researchers based on the contributions made at the International Symposium on Weed and Crop Resistance to Herbicides held at Córdoba, Spain. This book will be a good reference source for research scientists and advanced students.
Download or read book Non chemical Weed Management written by Mahesh K. Upadhyaya and published by CABI. This book was released on 2007-01-01 with total page 249 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Nonlinear Regression with R written by Christian Ritz and published by Springer Science & Business Media. This book was released on 2008-12-11 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt: - Coherent and unified treatment of nonlinear regression with R. - Example-based approach. - Wide area of application.
Download or read book Dose Response Analysis Using R written by Christian Ritz and published by CRC Press. This book was released on 2019-07-19 with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nowadays the term dose-response is used in many different contexts and many different scientific disciplines including agriculture, biochemistry, chemistry, environmental sciences, genetics, pharmacology, plant sciences, toxicology, and zoology. In the 1940 and 1950s, dose-response analysis was intimately linked to evaluation of toxicity in terms of binary responses, such as immobility and mortality, with a limited number of doses of a toxic compound being compared to a control group (dose 0). Later, dose-response analysis has been extended to other types of data and to more complex experimental designs. Moreover, estimation of model parameters has undergone a dramatic change, from struggling with cumbersome manual operations and transformations with pen and paper to rapid calculations on any laptop. Advances in statistical software have fueled this development. Key Features: Provides a practical and comprehensive overview of dose-response analysis. Includes numerous real data examples to illustrate the methodology. R code is integrated into the text to give guidance on applying the methods. Written with minimal mathematics to be suitable for practitioners. Includes code and datasets on the book’s GitHub: https://github.com/DoseResponse. This book focuses on estimation and interpretation of entirely parametric nonlinear dose-response models using the powerful statistical environment R. Specifically, this book introduces dose-response analysis of continuous, binomial, count, multinomial, and event-time dose-response data. The statistical models used are partly special cases, partly extensions of nonlinear regression models, generalized linear and nonlinear regression models, and nonlinear mixed-effects models (for hierarchical dose-response data). Both simple and complex dose-response experiments will be analyzed.
Download or read book Toward Sustainable Agricultural Systems in the 21st Century written by National Research Council and published by National Academies Press. This book was released on 2010-07-25 with total page 598 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last 20 years, there has been a remarkable emergence of innovations and technological advances that are generating promising changes and opportunities for sustainable agriculture, yet at the same time the agricultural sector worldwide faces numerous daunting challenges. Not only is the agricultural sector expected to produce adequate food, fiber, and feed, and contribute to biofuels to meet the needs of a rising global population, it is expected to do so under increasingly scarce natural resources and climate change. Growing awareness of the unintended impacts associated with some agricultural production practices has led to heightened societal expectations for improved environmental, community, labor, and animal welfare standards in agriculture. Toward Sustainable Agricultural Systems in the 21st Century assesses the scientific evidence for the strengths and weaknesses of different production, marketing, and policy approaches for improving and reducing the costs and unintended consequences of agricultural production. It discusses the principles underlying farming systems and practices that could improve the sustainability. It also explores how those lessons learned could be applied to agriculture in different regional and international settings, with an emphasis on sub-Saharan Africa. By focusing on a systems approach to improving the sustainability of U.S. agriculture, this book can have a profound impact on the development and implementation of sustainable farming systems. Toward Sustainable Agricultural Systems in the 21st Century serves as a valuable resource for policy makers, farmers, experts in food production and agribusiness, and federal regulatory agencies.
Download or read book The Future Role of Pesticides in US Agriculture written by National Research Council and published by National Academies Press. This book was released on 2000-11-02 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although chemical pesticides safeguard crops and improve farm productivity, they are increasingly feared for their potentially dangerous residues and their effects on ecosystems. The Future Role of Pesticides explores the role of chemical pesticides in the decade ahead and identifies the most promising opportunities for increasing the benefits and reducing the risks of pesticide use. The committee recommends R&D, program, and policy initiatives for federal agriculture authorities and other stakeholders in the public and private sectors. This book presents clear overviews of key factors in chemical pesticide use, including: Advances in genetic engineering not only of pest-resistant crops but also of pests themselves. Problems in pesticide useâ€"concerns about the health of agricultural workers, the ability of pests to develop resistance, issues of public perception, and more. Impending shifts in agricultureâ€"globalization of the economy, biological "invasions" of organisms, rising sensitivity toward cross-border environmental issues, and other trends. With a model and working examples, this book offers guidance on how to assess various pest control strategies available to today's agriculturist.
Download or read book Genetically Modified Pest Protected Plants written by National Research Council and published by National Academies Press. This book was released on 2000-08-23 with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explores the risks and benefits of crops that are genetically modified for pest resistance, the urgency of establishing an appropriate regulatory framework for these products, and the importance of public understanding of the issues. The committee critically reviews federal policies toward transgenic products, the 1986 coordinated framework among the key federal agencies in the field, and rules proposed by the Environmental Protection Agency for regulation of plant pesticides. This book provides detailed analyses of: Mechanisms and results of genetic engineering compared to conventional breeding for pest resistance. Review of scientific issues associated with transgenic pest-protected plants, such as allergenicity, impact on nontarget plants, evolution of the pest species, and other concerns. Overview of regulatory framework and its use of scientific information with suggestions for improvements.
Download or read book Livestock Water Quality written by Andrew A. Olkowski and published by . This book was released on 2009-04 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Variations on Split Plot and Split Block Experiment Designs written by Walter T. Federer and published by John Wiley & Sons. This book was released on 2007-04-13 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: A complete and up-to-date discussion of optimal split plot and split block designs Variations on Split Plot and Split Block Experiment Designs provides a comprehensive treatment of the design and analysis of two types of trials that are extremely popular in practice and play an integral part in the screening of applied experimental designs--split plot and split block experiments. Illustrated with numerous examples, this book presents a theoretical background and provides two and three error terms, a thorough review of the recent work in the area of split plot and split blocked experiments, and a number of significant results. Written by renowned specialists in the field, this book features: * Discussions of non-standard designs in addition to coverage of split block and split plot designs * Two chapters on combining split plot and split block designs and missing observations, which are unique to this book and to the field of study * SAS? commands spread throughout the book, which allow readers to bypass tedious computation and reveal startling observations * Detailed formulae and thorough remarks at the end of each chapter * Extensive data sets, which are posted on the book's FTP site The design and analysis approach advocated in Variations on Split Plot and Split Block Experiment Designs is essential in creating tailor-made experiments for applied statisticians from industry, medicine, agriculture, chemistry, and other fields of study.
Download or read book Comparative Environmental Impacts of Biotechnology derived and Traditional Soybean Corn and Cotton Crops written by and published by . This book was released on 2002 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: This review supports the conclusion that overall the currently commercialized biotechnology-derived soybean, corn, and cotton crops yield environmental benefits. Furthermore, a critical analysis of the literature supports the idea that biotechnology-derived soybean, corn, and cotton pose no environmental concerns unique to or different from those historically associated with conventionally developed crop varieties.
Download or read book Biological Control written by Douglas Frew Waterhouse and published by . This book was released on 1987 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1981 with total page 1852 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Integrated Pest Management written by Rajinder Peshin and published by Springer. This book was released on 2009-04-29 with total page 1324 pages. Available in PDF, EPUB and Kindle. Book excerpt: This interdisciplinary text offers updated knowledge on pest management. It discusses dissemination and impact on a range of crops across the globe on industrialized and subsistence level farms. It also explores the effect of the green revolution on IPM.
Download or read book GMO Myths and Truths written by Claire Robinson and published by . This book was released on 2018-08 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Some would have us believe that the case against genetically modified (GM) crops and foods is based on emotion, not science, and that to oppose GM crop and food technology is to be anti-science. The same people claim that GM crops offer higher yields and better nutrition, that they are safe for health and the environment, that they reduce agrochemical use, and that they are needed to feed the world's growing population. This book, co-authored by two genetic engineers and a writer/researcher, exposes these claims as false, using scientific and other documented evidence. GMO Myths and Truths summarizes the facts on the safety and efficacy of GM crops and foods in terms that are accessible to the non-scientist but still relevant to scientists, policymakers and educators. The evidence presented points to many hazards, risks, and limitations of genetic engineering technology. These include harm found in animal feeding and ecological studies, which in turn indicate risks to health and the environment posed by GM crops and foods. This updated 4th edition includes a new chapter on genome-editing techniques, which are being promoted as crucial to the future of food and agriculture. It explains why these techniques are genetic modification procedures, why genome-edited foods and crops pose similar risks to health and the environment as old-style transgenic GM methods, and why consumers should insist that these products are strictly regulated and labelled. The new edition is also updated with new research pointing to the health dangers of the pesticides associated with GM crops. The layout of the book enables those readers with limited time to read the chapter summaries, while providing more detail and full references for those who require them. The book shows that conventional breeding continues to outstrip GM in developing crops that deliver high yields, better nutrition, and tolerance to extreme weather conditions and poor soils. In agreement with over 400 international experts who co-authored a UN and World Bank-sponsored report on the future of farming, the authors conclude that modern agroecology, rather than GM, is the best path for feeding the world's current and future populations in a safe and sustainable way.
