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Physiological Evaluations Of Translocation Of Glyphosate In Glyphosate Resistant Crops Including Interaction With Cotton Growth Regulators
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Book Synopsis Physiological Evaluations of Translocation of Glyphosate in Glyphosate Resistant Crops Including Interaction with Cotton Growth Regulators by : Walter Edward Thomas
Download or read book Physiological Evaluations of Translocation of Glyphosate in Glyphosate Resistant Crops Including Interaction with Cotton Growth Regulators written by Walter Edward Thomas and published by . This book was released on 2006 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: Studies were conducted at three locations in North Carolina in 2004 to evaluate density-dependent effects of glyphosate-resistant (GR) corn on GR cotton growth and lint yield. The examined GR corn densities had a significant effect on cotton yield, but not as significant as many other problematic grass and broadleaf weeds.
Book Synopsis Physiological Evaluations of Translocation of Glyphosate in Glyphosate Resistant Crops Including Interaction with Cotton Growth Regulators by :
Download or read book Physiological Evaluations of Translocation of Glyphosate in Glyphosate Resistant Crops Including Interaction with Cotton Growth Regulators written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Field studies were conducted in 2004 to evaluate corn tolerance, weed control, grain yield, and net returns in transgenic and non-transgenic corn with various herbicide systems. No significant differences between hybrid systems were observed for weed control. Grain yield was variable between hybrids and locations due to environmental differences. Consequently, net returns for each hybrid system within a location were also variable. Studies were conducted at three locations in North Carolina in 2004 to evaluate density-dependent effects of glyphosate-resistant (GR) corn on GR cotton growth and lint yield. The examined GR corn densities had a significant effect on cotton yield, but not as significant as many other problematic grass and broadleaf weeds. Two studies were conducted to investigate the influence of corn growth stage on the absorption and translocation of glyphosate in glyphosate-resistant (GR) corn. Regardless of corn growth stage, the leaves above the treated leaf and roots were the greatest sinks for 14C-glyphosate. These data suggest that reproductive tissues such as the tassel and ear shoots can accumulate 14C-glyphosate at higher concentrations that other tissues, especially when the herbicide treatment is applied postemergence after the V6 stage. Studies were conducted to evaluate absorption and translocation of 14C-glyphosate in both commercial glyphosate-resistant (GR) cotton events [GR event 1, released 1997 (GRE1) and GR event 2, released 2006 (GRE2)] were evaluated at the 4-leaf (L) and 8-L growth stages. Glyphosate absorption, as a percentage of applied, increased over time. In 8-L cotton, glyphosate absorption was not different between events. Glyphosate translocation patterns were not different between events or harvest timings and exhibited a source-sink relationship. Based on the percentage of 14C exported out of the treated leaf, glyphosate and sucrose translocation patterns were similar, indicating that glyphosate may be used as a photoas.
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2007 with total page 924 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Physiological and Morphological Basis for Reproductive Sensitivity to Glyphosate in Glyphosate-Resistant Cotton by :
Download or read book Physiological and Morphological Basis for Reproductive Sensitivity to Glyphosate in Glyphosate-Resistant Cotton written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Transgenic, glyphosate-resistant (GR) cotton has been available to U.S. growers since 1997. Despitewide-spread acceptance, there have been performance complaints by growers citing lower boll retention in GRvarieties than in conventional varieties. Field and greenhouse studies confirmed grower observations, demonstrating a glyphosate-associated decrease in boll retention compared to non-treated GR or conventionalplants. Late (beyond the 5 leaf stage) foliar applications were the most injurious, presumably because plantswere entering early reproductive stages. Boll 'cavitation, ' (dessicated bolls attached to plants) also observed bygrowers following glyphosate treatment, resulted from abnormal abscission zone formation and was related tovariety. 14C-glyphosate absorption per square centimeter was greater when applied to stem tissue than leaf tissue, but overallabsorption is likely greater when applied foliarly, due to a greater total surface area. Because glyphosatetypically moves from source tissue to sink tissue, up to 3.7% of applied 14C-glyphosate was translocated toreproductive tissues. Seedling development in both GR and conventional cotton was inhibited by root-absorbed glyphosate. Root tissues were more sensitive to glyphosate than cotyledons or hypocotyls, as was demonstrated byinhibition of lateral root formation and shikimic acid accumulation. CP4-EPSPS content was significantly lowerin GR seedling roots than cotyledons, accounting for glyphosate sensitivity. Further studies compared the accumulation of shikimic acid in response to glyphosate in reproductiveand vegetative tissues in GR and conventional cotton. Shikimic acid accumulation per mM of glyphosate, wasgreater in reproductive than vegetative leaf tissue in both GR and conventional cotton, suggesting thatreproductive tissue is innately more sensitive to glyphosate than vegetative tissue. The quantity of theglyphosate-resistant CP4-EPSPS enzyme was significantly less in stamens than in vegetative leaf.
Book Synopsis Cotton Physiology by : Jack R. Mauney
Download or read book Cotton Physiology written by Jack R. Mauney and published by . This book was released on 1986 with total page 840 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Herbicide-Resistant Crops by : Stephen O. Duke
Download or read book Herbicide-Resistant Crops written by Stephen O. Duke and published by CRC Press. This book was released on 2018-01-18 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Weed and Crop Resistance to Herbicides by : Rafael de Prado
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.
Book Synopsis Molecular Biology of Weed Control by : Jonathan Gressel
Download or read book Molecular Biology of Weed Control written by Jonathan Gressel and published by CRC Press. This book was released on 2002-03-28 with total page 521 pages. Available in PDF, EPUB and Kindle. Book excerpt: Molecular Biology of Weed Control assesses the impact of the new tools of molecular biology on the science of weed control as well as the ways in which the science of weed control has helped and influenced molecular biology. Accentuating the utility of molecular biology to contribute to the control of intransigent weed species both in the developing and developed world, the book also looks to the future and describes how molecular biology can be used to diminish the use of chemical herbicides, and enhance crop competitiveness for light, nutrients and water. This volume is essential reading for all weed scientists, environmental students, researchers, and regulators.
Book Synopsis Glyphosate Resistance in Crops and Weeds by : Vijay K. Nandula
Download or read book Glyphosate Resistance in Crops and Weeds written by Vijay K. Nandula and published by John Wiley & Sons. This book was released on 2010-12-28 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Book Synopsis Fusarium Head Blight of Wheat and Barley by : Kurt J. Leonard
Download or read book Fusarium Head Blight of Wheat and Barley written by Kurt J. Leonard and published by American Phytopathological Society. This book was released on 2003 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book provides a comprehensive record of current knowledge on the nature of Fusarium head blight, the damage it causes, and current research on how to control it. The book begins with a historical account of Fusarium head blight epidemics that gives context to recent attempts to control epidemics in wheat and barley. A review of pathogen taxonomy and population biology helps scientists to see relationships among head blight pathogens and other Fusarium species. The information on epidemiology included in this review also provides an understanding of the weather conditions and cultural practices that promote explosive epidemics. New information on infection processes will lead the reader to a better understanding of how to breed for resistance in wheat and barley.
Book Synopsis The Herbicide Glyphosate by : E. Grossbard
Download or read book The Herbicide Glyphosate written by E. Grossbard and published by Butterworth-Heinemann. This book was released on 1985 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: Literatuuronderzoek betreffende herbicide glyfosaat, met aandacht voor de chemie; werkingsmechanisme bij zowel onkruiden als gewassen; werkzaamheid in diverse gewassen; gevolgen voor het milieu (inclusief non-target organismen) en de toepassingsmethodiek
Book Synopsis Physiology of Cotton by : James McD. Stewart
Download or read book Physiology of Cotton written by James McD. Stewart and published by Springer Science & Business Media. This book was released on 2009-11-04 with total page 573 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cotton production today is not to be undertaken frivolously if one expects to profit by its production. If cotton production is to be sustainable and produced profitably, it is essential to be knowledgeable about the growth and development of the cotton plant and in the adaptation of cultivars to the region as well as the technology available. In addition, those individuals involved in growing cotton should be familiar with the use of management aids to know the most profitable time to irrigate, apply plant growth regulators, herbicides, foliar fertilizers, insecticides, defoliants, etc. The chapters in this book were assembled to provide those dealing with the production of cotton with the basic knowledge of the physiology of the plant required to manage the cotton crop in a profitable manner.
Download or read book Allelopathy written by Manuel J. Reigosa and published by Springer Science & Business Media. This book was released on 2006-02-28 with total page 635 pages. Available in PDF, EPUB and Kindle. Book excerpt: There are many good books in the market dealing with the subject of allelopathy. When we designed the outline of this new book, we thought that it should include as many different points of view as possible, although in an integrated general scheme. Allelopathy can be viewed from different of perspectives, ranging from the molecular to the ecosystem level, and including molecular biology, plant biochemistry, plant physiology, plant ecophysiology and ecology, with information coming also from the organic chemistry, soil sciences, microbiology and many other scientific disciplines. This book was designed to include a complete perspective of allelopathic process. The book is divided into seven major sections. The first chapter explores the international development of allelopathy as a science and next section deals with methodological aspects and it explores potential limitations of actual research. Third section is devoted to physiological aspects of allelopathy. Different specialists wrote about photosynthesis, cell cycle, detoxification processes, abiotic and biotic stress, plant secondary metabolites and respiration related to allelopathy. Chapters 13 through 16 are collectively devoted to various aspects of plant ecophysiology on a variety of levels: microorganisms, soil system and weed germination. Fundamental ecology approaches using both experimental observations and theoretical analysis of allelopathy are described in chapters 16 and 17. Those chapters deal with the possible evolutionary forces that have shaped particular strategies. In the section named “allelopathy in different environments”, authors primarily center on marine, aquatic, forest and agro ecosystems. Last section includes chapters addressing application of the knowledge of allelopathy.
Download or read book Herbicides written by Andrew Price and published by BoD – Books on Demand. This book was released on 2015-12-02 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt: Herbicides are one of the most widely used groups of pesticides worldwide for controlling weedy species in agricultural and non-crop settings. Due to the extensive use of herbicides and their value in weed management, herbicide research remains crucial for ensuring continued effective use of herbicides while minimizing detrimental effects to ecosystems. Presently, a wide range of research continues to focus on the physiology of herbicide action, the environmental impact of herbicides, and safety. The authors of Herbicides, Physiology of Action, and Safety cover multiple topics concerning current valuable herbicide research.
Book Synopsis The Shikimic Acid Pathway by : Eric E. Conn
Download or read book The Shikimic Acid Pathway written by Eric E. Conn and published by Springer Science & Business Media. This book was released on 2013-03-08 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the invited papers presented as a symposium of The Phytochemical Society of North America which met for its annual meeting at the Asilomar Conference Center, Pacific Grove, California on June 12-16, 1985. The topic of the symposium, "The Shikimic Acid Pathway - Recent Advances", was especially appropriate for this, the Silver Anniversary of the Society because of the many natural products derived from that pathway. The organizers of the symposium recognized that it would not be possible to cover all groups of compounds derived from shikimic acid and therefore decided to omit any detailed discussion of flavonoid compounds and lignin. Research in these two areas has been the subject of several recent symposiums and/or published volumes. By omitting these topics, it was possible to devote more attention to other, equally interesting products derived from the shikimate pathway. Each chapter in the volume authoritat~vely speaks for itself on an important topic. However, the reader is invited to enjoy the lead chapter by Ulrich Weiss who describes his role in the research on the shikimate pathway during 1952/53. We are grateful to Dr. Weiss for this charming account of his work carried out in the laboratory of Dr. B. D. Davis during that period. Those who attended the Silver Anniversary Meeting were privileged to hear Dr. Gestur Johnson reminisce about the founding of the Society, initially called the Plant Phenolics Group of North America. At the annual banquet R. Horwitz also shared with us some recollections of Dr.
Book Synopsis The Triazine Herbicides by : Janis Mc Farland Ph.D.
Download or read book The Triazine Herbicides written by Janis Mc Farland Ph.D. and published by Elsevier. This book was released on 2011-08-19 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Book Synopsis The Future Role of Pesticides in US Agriculture by : National Research Council
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.
