Download or read book Evaluation of Glyphosate resistant Alfalfa Establishment in a Forage Production System written by Sarah Ann McCordick and published by . This book was released on 2006 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Avoiding Weed Shifts and Weed Resistance in Roundup Ready Alfalfa Systems written by and published by UCANR Publications. This book was released on 2009 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: Glyphosate-resistant alfalfa can reduce weed-control costs and potentially improve the quality of your harvested crop. Learn the proper management steps you need to take to help prevent weed shifts and herbicide resistant weeds when planting glyphosate-resistant alfalfa.
Download or read book Alfalfa Management Guide written by D. J. Undersander and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Alfalfa Management Guide is designed especially for busy growers, with to-the-point recommendations, useful images of diseased plants and pests, and quick-reference tables and charts. Revised in 2011, this edition of Alfalfa Management Guide covers the latest strategies for alfalfa establishment, production, and harvest-soil testing, fertilizing, integrated pest management, rotation, and more.
Download or read book Establishment Method and Seeding Date Effects on Alfalfa Yield and Quality written by Michael Dean Hoy and published by . This book was released on 1998 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: Weed control during alfalfa (Medicago sativa L.) establishment is a primary concern of Midwest forage producers. Companion crops, such as oat (Avena sativa L.), have been used for alfalfa establishment to increase first year forage yields and decrease weed pressure and erosion risk. Using herbicides to establish alfalfa without a companion crop has also been effective. The purpose of this study was to evaluate eight establishment methods and determine their influence on dry matter production, botanical composition and herbage quality during the establishment year and the year following establishment.
Download or read book Palmer Amaranth Control in Established Alfalfa and Documentation of Glyphosate resistant Amaranthus Species in Kansas written by Joshua Adam Putman and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Palmer amaranth is a troublesome weed that competes for water, nutrients, and sunlight in many cropping systems throughout the United States. It is a serious production problem for alfalfa growers in the southern Great Plains region because of extended germination and impact on forage quality and yields. Glyphosate has been used extensively to control Palmer amaranth but control has become difficult. The objectives of this research were to (1) evaluate various herbicide treatments for Palmer amaranth control in established alfalfa, (2) confirm the presence and scope of glyphosate-resistance in common waterhemp and Palmer amaranth populations in eastern Kansas, and (3) to characterize glyphosate-resistance in two Palmer amaranth populations from south central Kansas. Residual Palmer amaranth control in alfalfa varied among herbicide treatments. The best late season Palmer amaranth control was accomplished with sequential treatments that included flumioxazin at 140 g ha−1 or diuron at 2,690 g ha−1 as dormant applications followed by a between cutting treatment of flumioxazin at 70 g ha−1, which was still providing 85 to 96% control in late summer. Several other treatments provided good early season Palmer amaranth control, but control diminished as the season progressed. Palmer amaranth emerges throughout the growing season and therefore, sequential herbicide treatments with good residual activity may be necessary for season-long control. Greenhouse studies indicated that glyphosate-resistant common waterhemp is present throughout eastern Kansas with several populations that survived glyphosate up to two times the suggested use rate. Glyphosate-resistant Palmer amaranth was documented in several populations collected from various counties throughout Kansas. Two populations collected in south central Kansas in 2011 survived up to eight times the typical field use rate of glyphosate. Six more populations collected in 2012 displayed similar resistance characteristics with three populations surviving up to four times the typical rate of glyphosate. Shikimate assays on susceptible and resistant Palmer amaranth biotypes confirmed resistance to glyphosate.
Download or read book Are Superweeds an Outgrowth of USDA Biotech Policy written by United States. Congress. House. Committee on Oversight and Government Reform. Subcommittee on Domestic Policy and published by . This book was released on 2011 with total page 1534 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book World Weeds written by LeRoy Holm and published by John Wiley & Sons. This book was released on 1997-03-05 with total page 1158 pages. Available in PDF, EPUB and Kindle. Book excerpt: Responsible for a high proportion of the world's crop losses, weedstake away food that the world badly needs. They decrease thequality and quantity of vegetable fibers, wool, and hides, andinterfere with fishing, irrigation, hydroelectric power production,and the movement of shipping vessels. In order to recognize thetrue magnitude of the weed problem, and to be better equipped todesign effective weed control methods, it is vital to identify andlearn as much as possible about the many different species of thisdestructive agricultural predator. The culmination of four decades of global research, World Weedspresents comprehensive and up-to-date information on over 100weeds--addressing recent changes in such areas as crop tillagemethods, herbicide use, and agricultural runoff. This monumentalwork, featuring a wealth of original data from the authors,provides extensive coverage of the known biology of each species.Each entry contains a full botanical description, plus importantdetails on habitat requirements and distribution, seed production,ecology, physiology, crop impact, and more. Generously suppliedwith dozens of unique illustrations and species distribution mapscovering over 100 countries, this definitive resource boasts anextensive multilingual index of common names, and a massivebibliography with over 3,000 references to facilitate furtherreading and research. World Weeds is a truly masterful referencethat will be celebrated by weed and crop scientists, botanists, andothers for years to come.
Download or read book Proceedings of the Western Society of Weed Science written by Western Society of Weed Science (U.S.) and published by . This book was released on 2008 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Intermountain Alfalfa Management written by Steve B. Orloff and published by UCANR Publications. This book was released on 1997-06-01 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive guide for western alfalfa growers brings together the most current information and recommendations in nearly all areas of alfalfa management, including stand establishment, fertilization, irrigation, pest management, and harvesting
Download or read book Forages Volume 1 written by Michael Collins and published by John Wiley & Sons. This book was released on 2017-09-04 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: Forages, Volume I, Seventh Edition is the most comprehensive text available for teachers of undergraduate Forages courses. This edition will provide students with a good balance of scientific principles, to aid in integrating the concepts they learn, and practical information on forage identification, plant characteristics, management, and utilization that can be used by forage management practitioners. Grassland ecosystems are extremely complex, including the plant/animal interface as well as the soil/climate/forage interface and the text must support understanding and integration of all of these considerations. The coverage of the science behind the plant characteristics and responses make the book applicable in many parts of the world, while other region-specific management information relates mainly to North America. This edition has been updated to address emerging areas of study, including the use of forage plants as bioenergy crops. The editors also address the renewed national interest in environmental issues such as water quality, global climate change and eutrophication in the Gulf. This edition also addresses the role of forages for wildlife habitat and food sources, another area of increased interest in recent years. These revisions respond to the generational change taking place among forage scientists and teachers in recent years.
Download or read book Glyphosate written by John E. Franz and published by . This book was released on 1997 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt: Glyphosate is a popular global post-emergent perennial herbicide. This volume is a comprehensive review of glyphosate's history, properties, chemistry, biology, formulation, technology, enzymology, and structure/activity relationship. The discussion covers glyphosate's unique environmental properties, broad range of application, soil inactivity, soil and plant metabolism, low toxicity, and uptake and transport in plants. It also covers the syntheses of hundreds of analogs and derivatives and clarifies glyphosate's molecular mode of action and its effect on the target enzyme EPSP synthase.
Download or read book The 2007 Conference of the American Forage and Grassland Council and Northeastern Branch of the Crop Soil and Agronomy Society of America written by and published by . This book was released on 2007 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Weed Technology written by and published by . This book was released on 2009 with total page 658 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2008 with total page 902 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Weed Biology and Management written by Inderjit and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt: Weeds hold an enigmatic and sometimes-controversial place in agriculture, where they are generally reviled, grudgingly tolerated, and occasionally admired. In most cases, growers make considerable effort to reduce the negative economic impact of weeds because they compete with crops for resources and hinder field operations, thereby affecting crop productivity and quality, and ultimately the sustainability of agriculture. Weed control in production agriculture is commonly achieved through the integration of chemical, biological, and mechanical management methods. Chemicals (herbicides) usually inhibit the growth and establishment of weed plants by interfering with various physiological and biochemical pathways. Biological methods include crop competition, smother crops, rotation crops, and allelopathy, as well as specific insect predators and plant pathogens. Mechanical methods encompass an array of tools from short handled hoes to sophisticated video-guided robotic machines. Integrating these technologies, in order to relieve the negative impacts of weeds on crop production in a way that allows growers to optimize profits and preserve human health and the environment, is the science of weed management.
