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Chemical pest control is in use in practically every country in the world since agrochemicals play a decisive role in ensuring food supply and protection against damage by pests, insects and pathogenic fungi. Particularly in the half century since World War II, food production has risen dramatically in most parts of the world. In the last 20 years, the yield of major crops has roughly doubled in Western agriculture and there is still the potential for further achievements, particularly in the developing countries. The world's cereal and rice production, now more than 2 billion tons/year, has to increase by 2. 4% annually to cope with the rising food demand caused mainly by the growing population and improvement of living standards in most of the developing countries. Such a demand for food has to be achieved by higher yields from the restricted arable land already in use. Global farm land resources are about 1. 4 billion ha, of which 1. 2 billion ha is cultivated with major crops. Experts agree that a future substantial addition of new produc tive areas is unlikely. Those with a high yield potential are already in use; new fields with a lower output may possibly be obtained by cultivation of arid or cold areas. More recently, new areas of large-scale farmland have been devel oped in tropical regions of Latin America, primarily in Argentina and Brazil, at the cost of the destruction of tropical rain forest.
Herbicides make a spectacular contribution to modern crop production. Yet, for the development of more effective and safer agrochemicals, it is essential to understand how these compounds work in plants and their surroundings. This expanded and fully revised second edition of Herbicides and Plant Physiology provides a comprehensive and up-to-date account of how modern herbicides interact with target plants, and how they are used to manage crop production. In addition, the text: Provides a current account of the importance of weeds to crop yield and quality; Describes how new herbicides are discovered and developed; Examines precise sites of herbicide action and mechanisms of herbicide selectivity and resistance; Reviews commercial and biotechnological applications, including genetically engineered herbicide resistance in crops; Suggests new areas for future herbicide development; Includes many specially prepared illustrations. As a summary of diverse research information, this second edition of Herbicides and Plant Physiology is a valuable reference for students and researchers in plant physiology, crop production/protection, plant biochemistry, biotechnology and agriculture. All libraries in universities, agricultural colleges and research establishments where these subjects are studied and taught will need copies of this excellent book on their shelves.
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
Crop Safeners for Herbicides aims to discuss the issue of chemical manipulation of crop tolerance to herbicides. This book resulted from a symposium titled ""Chemical Manipulation of Crop Tolerance to Herbicides"". Several chapters included herein are added contributions from experts outside of the symposium. The book not only serves as reference for the knowledge of the agronomic uses, development, chemistry, and mechanisms of action herbicide safeners, but it also assesses the impact of safeners all around the world. It also presents a discussion on alternative approaches that increases herbicide selectivity and explores future trends. Comprised of 16 chapters and divided into four parts, the book starts with a section on the development and uses of herbicide safeners. The text also offers a critical and extensive review of academic and industrial perspectives in the development of herbicide safeners in different parts of the world. Part 2 of this book starts with an overview of the physiological, biochemical, and molecular aspects of the mechanisms, and then further delves in to the prevalent mechanisms of action of selected classes of herbicide safeners. The third part of this book provides data on the potential use of alternative approaches for the manipulation of crop tolerance to herbicides. The last part is a summary of the progress and prospects of the topic of crop safening against herbicide injury. The book serves as an important resource for students and professionals interested in the field of agriculture, agronomy, pest research, weed science, and plant pathology and physiology.
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
This book presents essential research on a class of environmentally friendly alkylphosphonate herbicides. This class of herbicides acted as a competitive inhibitor of the pyruvate dehydrogenase complex (PDHc) to control weeds. The bioreasoning and systematic approach, from basic research to field tests of candidate compounds, are introduced. The basic research covers the molecular design, chemical synthesis, biological activities evaluation, structure-activity relationship analysis and structural optimization. Subsequently, the book reviews the biochemistry of PDHc inhibitors, the selectivity between mammals and plants, and the mechanism of herbicidal activity of novel alkylphosphonates as selective PDHc inhibitors. Field trials for selected alkylphosphonate candidates as herbicides are also included. This book provides a sound basis for the rational design and development of novel herbicides as effective PDHc inhibitors with good enzyme-selective inhibition of plant PDHc between mammals and plants. These studies take full advantages of the low toxicity and low residual impact of selective PHDc inhibitors to design an effective and environmentally friendly herbicide. This book is based on twenty years of research on alkylphosphonates and phosphorus-containing PDHc inhibitors, and demonstrates how to develop these PDHc inhibitors as an effective and “green” herbicide candidate. Hong-Wu He, PhD, is a Professor at the Key Laboratory of Pesticide & Chemical Biology, Ministry of Education of China, and Director of the Institute of Pesticide Chemistry, College of Chemistry, Central China Normal University, China. Hao Peng, PhD, and Xiao-Song Tan are both Associate Professors at the Key Laboratory of Pesticide & Chemical Biology, Ministry of Education of China, College of Chemistry, Central China Normal University, China.
Herbicides and their Mechanisms of Action highlights issues in herbicide selectivity. Developed with the input of authors from both academia and industry, this volume delivers a comprehensive and up-to-date treatment of the operation of the selectivity mechanisms of herbicides. Even more, the book discusses real-world effects of herbicides, and the results herbicides bring to bear on the environment. The authors emphasize applied aspects of the subject and concentrate on the developments of the last decade, making the book both practical and timely. With the wide variety of herbicides now available for the selective control of weed growth, it is imperative that scientists acquire a detailed understanding of the scientific bases of these herbicides. Indeed, the most recently developed herbicides work by inhibiting the enzyme systems of specific herbs, thereby retarding the growth of those herbs. For maximum effectiveness it becomes crucial that the active ingredients of these herbicides be efficiently delivered on the desired targets. Providing a state-of-the-art appraisal of this important subject, Herbicides and their Mechanisms of Action is the ideal resource for virtually all researchers and professionals involved in the development, administration, and regulation of herbicides.
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.
Experts in herbicide research and development - chemists and plant physiologists -, have written 15 chapters that review all aspects pertinent to peroxidizing herbicides, compounds of topical interest since extremely low use rates ensure high environmental safety. Topics covered include structure-activity relationships, relevant patent literature, preparative methods, modes of action, greenhouse screening, laboratory assays, plant pigment biochemistry, and enzymology of the decisive target enzyme of this class of herbicides. This comprehensive review will be welcomed as a unique and timely compilation of the current status of peroxidizing herbicide research and development. It will be of interest to professional chemists and biologists in agrochemical companies, universities and agricultural colleges.