Download or read book Fundamentals of Weed Science written by Robert Zimdahl and published by Academic Press. This book was released on 2012-12-02 with total page 465 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book A History of Weed Science in the United States written by Robert L Zimdahl and published by Elsevier. This book was released on 2010-02-04 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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

Download or read book The Health Effects of Cannabis and Cannabinoids written by National Academies of Sciences, Engineering, and Medicine and published by National Academies Press. This book was released on 2017-03-31 with total page 487 pages. Available in PDF, EPUB and Kindle. Book excerpt: Significant changes have taken place in the policy landscape surrounding cannabis legalization, production, and use. During the past 20 years, 25 states and the District of Columbia have legalized cannabis and/or cannabidiol (a component of cannabis) for medical conditions or retail sales at the state level and 4 states have legalized both the medical and recreational use of cannabis. These landmark changes in policy have impacted cannabis use patterns and perceived levels of risk. However, despite this changing landscape, evidence regarding the short- and long-term health effects of cannabis use remains elusive. While a myriad of studies have examined cannabis use in all its various forms, often these research conclusions are not appropriately synthesized, translated for, or communicated to policy makers, health care providers, state health officials, or other stakeholders who have been charged with influencing and enacting policies, procedures, and laws related to cannabis use. Unlike other controlled substances such as alcohol or tobacco, no accepted standards for safe use or appropriate dose are available to help guide individuals as they make choices regarding the issues of if, when, where, and how to use cannabis safely and, in regard to therapeutic uses, effectively. Shifting public sentiment, conflicting and impeded scientific research, and legislative battles have fueled the debate about what, if any, harms or benefits can be attributed to the use of cannabis or its derivatives, and this lack of aggregated knowledge has broad public health implications. The Health Effects of Cannabis and Cannabinoids provides a comprehensive review of scientific evidence related to the health effects and potential therapeutic benefits of cannabis. This report provides a research agendaâ€"outlining gaps in current knowledge and opportunities for providing additional insight into these issuesâ€"that summarizes and prioritizes pressing research needs.

Download or read book Marijuana As Medicine written by Institute of Medicine and published by National Academies Press. This book was released on 2000-12-30 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: Some people suffer from chronic, debilitating disorders for which no conventional treatment brings relief. Can marijuana ease their symptoms? Would it be breaking the law to turn to marijuana as a medication? There are few sources of objective, scientifically sound advice for people in this situation. Most books about marijuana and medicine attempt to promote the views of advocates or opponents. To fill the gap between these extremes, authors Alison Mack and Janet Joy have extracted critical findings from a recent Institute of Medicine study on this important issue, interpreting them for a general audience. Marijuana As Medicine? provides patientsâ€"as well as the people who care for themâ€"with a foundation for making decisions about their own health care. This empowering volume examines several key points, including: Whether marijuana can relieve a variety of symptoms, including pain, muscle spasticity, nausea, and appetite loss. The dangers of smoking marijuana, as well as the effects of its active chemical components on the immune system and on psychological health. The potential use of marijuana-based medications on symptoms of AIDS, cancer, multiple sclerosis, and several other specific disorders, in comparison with existing treatments. Marijuana As Medicine? introduces readers to the active compounds in marijuana. These include the principal ingredient in Marinol, a legal medication. The authors also discuss the prospects for developing other drugs derived from marijuana's active ingredients. In addition to providing an up-to-date review of the science behind the medical marijuana debate, Mack and Joy also answer common questions about the legal status of marijuana, explaining the conflict between state and federal law regarding its medical use. Intended primarily as an aid to patients and caregivers, this book objectively presents critical information so that it can be used to make responsible health care decisions. Marijuana As Medicine? will also be a valuable resource for policymakers, health care providers, patient counselors, medical faculty and studentsâ€"in short, anyone who wants to learn more about this important issue.

Download or read book Biology and Management of Problematic Crop Weed Species written by Bhagirath Chauhan and published by Elsevier. This book was released on 2021-09-04 with total page 433 pages. Available in PDF, EPUB and Kindle. Book excerpt: Weeds are the main biological constraint to crop production throughout the year. Uncontrolled weeds could cause 100% yield loss. In Australia, the overall cost of weeds to Australian grain growers was estimated at AU$ 3.3 billion annually. In terms of yield losses, weeds amounted to 2.7 million tonnes of grains at a national level. In the USA, weeds cost US$ 33 billion in lost crop production annually. In India, these costs were estimated to be much higher (US$ 11 billion). These studies from different economies suggest that weeds cause substantial yield and economic loss. Biology and Management of Problematic Weed Species details the biology of key weed species, providing vital information on seed germination and production, as well as factors affecting weed growth. These species include Chenopodium album, Chloris truncata and C. virgate, Conyza bonariensis and C. canadensis, Cyperus rotundus, and many more. This information is crucial for researchers and growers to develop integrated weed management (IWM) strategies. Written by leading experts across the globe, this book is an essential read to plant biologists and ecologists, crop scientists, and students and researchers interested in weed science. - Provides detailed information on the biology of different key weed species - Covers weed seed germination and emergence - Presents the factors affecting weed growth and seed production

Download or read book Weed Crop Competition written by Robert L. Zimdahl and published by John Wiley & Sons. This book was released on 2007-11-19 with total page 235 pages. Available in PDF, EPUB and Kindle. Book excerpt: For the past 20 years, the first edition of this text has been widely cited as authoritative academic reference. The latest edition continues the tradition set by the original book, and covers weed science research that has been published since 1980. This book aims to reduce the instance of research duplication—saving scientists and supporting institutions time and money. Not only does the second edition of Weed Crop Competition review, summarize, and combine current research; it critiques the research as well. This text has the potential to accelerate advancements in weed crop competition, which remains an important factor that affects crop yields. Scientists in foreign countries where access to literature is often limited or nonexistent, will find the information in this text invaluable. Weed scientists, crop scientists, plant ecologists, sustainable agriculturists, and organic agriculturists will be well-pleased with this long overdue and much needed new editionWeed Crop Competition provides a unique reference that reviews, summarises and synthesizes the literature published concerning research on this topic. The first edition has been one of the most frequently cited sources in weed science for the past 20 years. The second edition covers the significant body of literature that has been published since 1980. Originally intended to survey existing research, the intent of the book is to reduce the instance of research duplication, thus saving scientists and their institutions time and money, and expediting advancements in weed crop competition, an important factor affecting crop yields. Scientists in foreign countries where access to the literature is often limited or non-existent, find the information an invaluable resource. This long overdue and much needed new edition rejuvenates the tradition set by the original book.

Download or read book Smoke Signals written by Martin A. Lee and published by Simon and Schuster. This book was released on 2013-08-13 with total page 529 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book the author, an investigative journalist, traces the social history of marijuana from its origins to its emergence in the 1960s as a defining force in an ongoing culture war. He describes how the illicit marijuana subculture overcame government opposition and morphed into a multibillion-dollar industry. In 1996, Californians voted to legalize marijuana for medicinal purposes. Similar laws have followed in several other states, but not without antagonistic responses from federal, state, and local law enforcement. The author draws attention to underreported scientific breakthroughs that are reshaping the therapeutic landscape: medical researchers have developed promising treatments for cancer, heart disease, Alzheimer's, diabetes, chronic pain, and many other conditions that are beyond the reach of conventional cures. This book is an examination of the medical, recreational, scientific, and economic dimensions of the world's most controversial plant.

Download or read book Craft Weed with a new preface by the author written by Ryan Stoa and published by MIT Press. This book was released on 2024-04-02 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: How the future of post-legalization marijuana farming can be sustainable, local, and artisanal. What will the marijuana industry look like as legalization spreads? Will corporations sweep in and create Big Marijuana, flooding the market with mass-produced weed? Or will marijuana agriculture stay true to its roots in family farming, and reflect a sustainable, local, and artisanal ethic? In Craft Weed, Ryan Stoa argues that the future of the marijuana industry should be powered by small farms—that its model should be more craft beer than Anheuser-Busch. To make his case for craft weed, Stoa interviews veteran and novice marijuana growers, politicians, activists, and investors. He provides a history of marijuana farming and its post-hippie resurgence in the United States. He reports on the amazing adaptability of the cannabis plant and its genetic gifts, the legalization movement, regulatory efforts, the tradeoffs of indoor versus outdoor farms, and the environmental impacts of marijuana agriculture. To protect and promote small farmers and their communities, Stoa proposes a Marijuana Appellation system, modeled after the wine industry, which would provide a certified designation of origin to local crops. A sustainable, local, and artisanal farming model is not an inevitable future for the marijuana industry, but Craft Weed makes clear that marijuana legalization has the potential to revitalize rural communities and the American family farm. As the era of marijuana prohibition comes to an end, now is the time to think about what kind of marijuana industry and marijuana agriculture we want. Craft Weed will help us plan for a future that is almost here.

Download or read book Weed Science written by Godfrey Pearlson and published by Academic Press. This book was released on 2020-07-11 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: WHAT DO WE KNOW ABOUT MARIJUANA AND HOW DO WE KNOW IT? Marijuana is the most frequently consumed illicit drug worldwide, with over 158.8 million users, according to the UN. Responding to public pressure, the US federal government is likely to legalize recreational marijuana within the next few years. With increasing numbers of people using cannabis both medically and recreationally there are many looming questions that only science can answer. These include: - What's likely to happen, both good and bad, if the US legalizes marijuana? - What are some simple, science-based rules to separate fact from fiction and to help guide policy in the highly contentious marijuana debate? - Exactly what is cannabis doing in the brain that gets us high? A journey through THC neuroscience - Does cannabis really have medical benefits - what's the evidence? - To what extent does cannabis impair driving? - Can smoking marijuana in adolescence affect IQ or risk for developing schizophrenia? - Is marijuana safe to use during pregnancy? - Reviews the endocannabinoid system and why our bodies are full of "weed receptors" - Introduces readers to the various forms of marijuana: flower, dabs, hash, edibles, shatter, vapes, tinctures, oils and synthetics, THC, CBD and terpenes. - Demonstrates how and why cannabis affects different people very differently. Discusses how MRI and PET scans can help show the effects of marijuana on the brain. - Discusses long-term effects of adolescent and adult cannabis use. - Examines the evidence for cannabis's role in increasing the risk for schizophrenia-like illnesses.

Download or read book Weed Science written by Thomas J. Monaco and published by John Wiley & Sons. This book was released on 2002-01-16 with total page 690 pages. Available in PDF, EPUB and Kindle. Book excerpt: The updated edition of the classic, fundamental book on weed science Weed Science provides a detailed examination of the principles of integrated weed management with important details on how chemical herbicides work and should be used. This revised Fourth Edition addresses recent developments affecting weed science. These include the increased use of conservation-tillage systems, environmental concerns about the runoff of agrochemicals, soil conservation, crop biotechnology, resistance of weeds and crops to herbicides, weed control in nonagricultural settings and concerns regarding invasive plants, wetland restoration, and the need for a vastly improved understanding of weed ecology. Current management practices are covered along with guidance for selecting herbicides and using them effectively. To serve as a more efficient reference, herbicides are cross-listed by chemical and brand name and grouped by mechanism of action and physiological effect rather than chemical structure. In addition, an introduction to organic chemistry has been added to familiarize readers with organic herbicides. Also included are guidelines on weed-control practices for specific crops or situations, such as small grains, row crops, horticultural crops, lawns and turf, range land, brush, and aquatic plant life. Generously supplemented with 300 drawings, photographs, and tables, Weed Science is an essential book for students taking an introductory course in weed science, as well as a reference for agricultural advisors, county agents, extension specialists, and professionals throughout the agrochemical industry.

Download or read book Weed Biology and Climate Change written by Lewis H. Ziska and published by John Wiley & Sons. This book was released on 2011-01-11 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: Weed Biology and Climate Change will provide a synthesis of what is known regarding the probable impact of environmental change on weed biology. Chapters will look at impacts of weed biology on agriculture, invasive species that limit ecological diversity and weeds that serve as health risks. In addition it looks at current weed management strategies and how they will be affected by global climate change. The book covers an increasingly important area in plant science, crop science and ecological research, and will be essential reading for anyone exploring the biological impacts of a changing environment.

Download or read book Biopesticides written by Aaron Gross and published by Amer Chemical Society. This book was released on 2015-02-23 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Resistance to conventional pesticides has been growing rapidly among all pests. Furthermore, there is increased public concern about the safety of conventional pesticides, and increased governmental restrictions have resulted in the need to identify new compounds that are safe and effective in controlling pests that are of concern to agriculture as well as to public and animal health. Biopesticides may aid in the control of such pests with fewer deleterious effects to the environment, people and animals. The U.S. Environmental Protection Agency (EPA) defines biopesticides as "pesticides derived from such natural materials as animals, plants, bacteria, and certain minerals" (www.epa.gov). According to the U.S. EPA's website in 2014 there were more than 430 registered biopesticides along with 1320 active product registrations. Biopesticides have seen a recent growth, which is partially due to increased advances in biotechnological tools for pest control. However, the growth has been largely spurred by the growing needs for new tools to fight pesticide resistance and safer and more benign means of pest management. This volume and the chapters contained within it resulted from the "Biopesticides: State of the Art and Future Opportunities" symposium held at the 246th ACS National Meeting in Indianapolis, Indiana, September 8-12, 2013. The symposium was comprised of 38 papers in five sessions: The Big Picture, Repellents and Attractants, Insecticides and Nematicides, Products from Genetic Improvements, and Economic, Regulatory and Future Needs. Biopesticides: State of the Art and Future Opportunities offers a wealth of information that will enrich the knowledge of experts in the field of biopesticide research.

Download or read book Growing Weed in the Garden written by Johanna Silver and published by Abrams. This book was released on 2020-03-24 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: The definitive and first-ever guide dedicated exclusively to growing weed in your home garden “Beautifully photographed and with clear, expert advice, this very good primer for growing grass makes it easy to harvest and process a fine crop at home. I need two copies—one for me and one for Snoop.” —Martha Stewart From the former garden editor of Sunset magazine, Johanna Silver, Growing Weed in the Garden brings cannabis out of the dark, into the sunlight. This groundbreaking, comprehensive guide to incorporating weed into your garden leads you from seed or plant selection to harvest. Filled with gorgeous photographs of beautiful gardens, as well as step-by-step photography that shows how to dry, cure, and store cannabis, make tinctures and oils, and roll the perfect joint, this book provides all the information you need to grow and enjoy cannabis. For both the stoned and sober, the new and seasoned gardener, Growing Weed in the Garden is the definitive guide to doing just that. “For those interested in cannabis, from the history of the plant to how to raise it in your backyard, this book provides the necessary information along with beautiful photos and welcome doses of humor.” —The American Gardener

Download or read book Automation The Future of Weed Control in Cropping Systems written by Stephen L. Young and published by Springer Science & Business Media. This book was released on 2013-11-21 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Therapeutic Uses of Cannabis written by British Medical Association and published by CRC Press. This book was released on 1997-11-18 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: At the last Annual Representative Meeting of the British Medical Association a motion was passed that `certain additional cannabinoids should be legalized for wider medicinal use.'' This report supports this landmark statement by reviewing the scientific evidence for the therapeutic use of cannabinoids and sets the agenda for change. It will be welcomed by those who believe that cannabinoids can be used in medical treatment. The report discusses in a clear and readable form the use and adverse effects of the drug for nausea, multiple sclerosis, pain, epilepsy, glaucoma, and asthma.

Download or read book Fundamentals of Weed Science written by Robert L Zimdahl and published by Elsevier. This book was released on 2024-02-14 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fundamentals of Weed Science, Sixth Edition, places weed management in the context of weed research and science, presenting the latest advances in the role, control, and potential uses of weed plants. This book uses an ecological framework to explore the role of responsible and effective weed control in agriculture from the emergence and genetic foundation of weeds to the latest means of control and environmental effects. Fully revised, updated, and expanded, Fundamentals of Weed Science now includes insights into international trad eand consumer preferences, weed seedbanks, advancements in robotic weeding, weed flaming, and the potential of precision agriculture in weed science. • Includes an emphasis on herbicide resistance and molecular biology, both of which have come to dominate weedscience research• Covers all traditional aspects of weed science as well as current research• Provides broad coverage, including relevant related subjects like weed ecology and weed population genetics

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 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Weeds are rarely considered a priority despite the fact that all active farmers know that the majority of their variable costs and time are devoted to eradicating them. Even most crop losses due to pests can be traced directly back to weeds, which harbor the pests as secondary hosts. In the Molecular Biology of Weed Control, Jonathan Gressel focuses attention upon the tools of molecular biology that can be used effectively in the science of weed control. Always keeping his perspective congruent with that of the working farmer, Gressel explains how weed biologists and ecologists are beginning to use recently developed tools to control intransigent weed species in modern as well as less developed areas of the world. With his usual candor, Gressel evaluates past efforts, while also exploring future prospects for replacing chemical herbicides with genetic engineering, to improve a crop's ability to compete against its feral cousins for light, nutrients, and water. Like much of Gressel's work, this book should be mandatory reading for all agriculturists and plant scientists, so that they employ and encourage what is truly effective and efficient in meeting one of this century's most critical challenges: maximizing agricultural productivity.