Working with Dynamic Crop Models: Methods, Tools and Examples for Agriculture and Environment, 3e, is a complete guide to working with dynamic system models, with emphasis on models in agronomy and environmental science. The introductory section presents the foundational information for the book including the basics of system models, simulation, the R programming language, and the statistical notions necessary for working with system models. The most important methods of working with dynamic system models, namely uncertainty and sensitivity analysis, model calibration (frequentist and Bayesian), model evaluation, and data assimilation are all treated in detail, in individual chapters. New chapters cover the use of multi-model ensembles, the creation of metamodels that emulate the more complex dynamic system models, the combination of genetic and environmental information in gene-based crop models, and the use of dynamic system models to aid in sampling. The book emphasizes both understanding and practical implementation of the methods that are covered. Each chapter simply and clearly explains the underlying principles and assumptions of each method that is presented, with numerous examples and illustrations. R code for applying the methods is given throughout. This code is designed so that it can be adapted relatively easily to new problems.

Transgenic Plants, Volume 86, the latest release in the series Advances in Botanical Research, brings together information needed by many teachers, researchers and managers who have to consider biotechnology from a scientific or legal point-of-view. It presents authors who bring their long personal experience on a given subject. Although the subjects are technical in nature, the take-home message of each chapter is understandable by non-specialists.

Quantifying and Managing Soil Functions in Earth's Critical Zone: Combining Experimentation and Mathematical Modelling, Volume 142, the latest in the Advances in Agronomy series continues its reputation as a leading reference and first-rate source for the latest research in agronomy. Each volume contains an eclectic group of reviews by leading scientists throughout the world. Five volumes are published yearly, ensuring that the authors' contributions are disseminated to the readership in a timely manner. As always, the subjects covered are varied and exemplary of the myriad of subject matter dealt with by this long-running serial.

The latest edition of Animal Nutrition has been updated thoroughly to provide a clear and comprehensive introduction to the science and practice of animal nutrition. This classic, market-leading text is a trusted resource for undergraduates studying Animal Science, Veterinary Science, Agriculture, Biology and Biochemistry. It is supported by key experimental evidence throughout about modern advancements in animal food nourishment, composition of foods and feeding standards for dairy and beef cattle, sheep, pigs and poultry, horses, and cats and dogs. It is split into six main sections covering: The components of food; The digestion and metabolism of nutrients; Quantifying the nutrient content of foods: digestibility, energy and protein values; The nutrient requirements of animals; The nutritional characteristics of foods; and Animal products and human nutrition. Quantitative aspects of the subject are clearly explained and illustrated by worked examples. Problems have been added to all chapters to aid student learning and the appendices include solutions to all chapter-end numeric questions. This edition includes nutritional topics related to molecular biology, the environment, and companion animals - dog and cat nutrition has been expanded. Under nutrient requirements of animals, usage of novel foods such as insects has also been added. Chapter-end summaries and questions allow students to recap and test their knowledge of the chapter topic.

This comprehensive new soybean reference disseminates key soybean information to drive success for soybeans via 21 concise chapters. The text covers all aspects of soybeans, including genetics, breeding, quality, post-harvest management, marketing, utilization (food and energy applications), U.S. domestic practices versus foreign practices, and production methods.

Developed for Introduction to Soils or Soil Science courses, The Nature and Properties of Soils, 15th Edition, can be used in courses such as Soil Fertility, Land Resources, Earth Science and Soil Geography. The Nature and Properties of Soils is designed to engage today's students with the latest in the world of soils. This hallmark text introduces students to the exciting world of soils through clear writing, strong pedagogy, and an ecological approach that effectively explains the fundamentals of soil science. Worked calculations, vignettes, and current real-world applications prepare readers to understand concepts, solve problems, and think critically. Written for both majors and non-majors, this text highlights the many interactions between the soil and other components of forest, range, agricultural, wetland and constructed ecosystems. Now in full-colour, the 15th Edition includes hundreds of compelling photos, figures, and diagrams to bring the exciting world of soils to life. Extensively revised, new and updated content appears in every chapter. Examples include: coverage of the pedosphere concept; new insights into humus and soil carbon accumulation; subaqueous soils, soil effects on human health; principles and practice of organic farming; urban and human engineered soils; new understandings of the nitrogen cycle; water-saving irrigation techniques; hydraulic redistribution, soil food-web ecology; disease suppressive soils; soil microbial genomics; soil interactions with global climate change; digital soil maps; and many others.

'An important and timely book' from the Foreword by Stanley Johnson 'A complete and absorbing history of a decade of intense international politics offers many insights for future negotiators of sustainable solutions' Stephen Bass, International Institute for Environment and Development 'Skillfully navigates the jungle of forest politics, leaving us in no doubt that the verbal commitment to save the world's forests has yet to be translated into action on the ground. The way forward must clearly lie in political commitments and international cooperation if forests are to continue to preserve life on Earth' Francis Sullivan, World Wide Fund for Nature Global deforestation and its attendant processes - including soil degradation, climate change and the loss of biological diversity - emerged as international political issues during the 1980s, prompting politicians to seek consensus on programmes and policies for the conservation and sustainable management of forests. Yet global initiatives have been bedevilled by tensions between the North and South and between governments, industry, local communities and indigenous peoples. Meanwhile, rates of deforestation in the tropics are increasing, and international political efforts are demonstrably failing. Forest Politics carefully traces the evolution of international cooperation on forests, from the inception of the controversial International Tropical Timber Organization and the failed Tropical Forestry Action Programme in the mid-1980s, to the creation of the Intergovernmental Panel on Forests in the mid-1990s. The book also provides a detailed analysis of the negotiating stances of the parties involved in the divisive negotiations that rook place prior to the 1992 'Earth Summit' in Rio de Janeiro and the equally factious negotiations for the International Tropical Timber Agreement of 1994. It provides a fascinating insight into the nature of such processes, illustrating the difficulties that arise when concepts such as 'global commons' come into conflict with national sovereignty. Complete with annexes of important political documents, and making extensive use of primary source material and interviews with participants. Forest Politics presents case studies of all the major forest negotiations over the last 13 years. It is an essential reference point for policy makers, environmental campaigners and students, and required reading for all those who care about the future of the world's forests. David Humphreys is Research Fellow in Global Environmental Change at the Open University. Originally published in 1996

The depletion of the tropical rain forests has attracted considerable attention in recent times, and the serious consequences for the global biosphere are widely acknowledged. Yet deforestation continues apace, and in some areas (for example, southeast Asia) the very existence of the forests is seriously threatened. Contrary to popular belief, evidence suggests that local economic and living conditions are more significant in this than timber exploitation for exports to the Northern countries."Tropical Deforestation: A Socio-Economic Approach" offers a new perspective on the economic imperatives which encourage indigenous populations to encroach upon their own forests, and shows how action against deforestation must form part of a wider movement to improve both the living conditions of the local inhabitants and the durability of their national economies.Part One offers an overview of the processes surrounding deforestation, and an assessment of the current situation. Part Two analyses the land-use issues, and explains the socioeconomic imperatives in the affected regions. In an absorbing conclusion. Part Three guides the reader through a series of hypothetical policy scenarios, using a specially adapted economic computer model, to predict which combinations of policies and trade arrangements might bring about a more beneficial state of affairs.

This text is a synthesis of research in production and management since the inception of the discipline as an agricultural science in the 1930s. All the ecological regions are covered extensively, but the main emphasis is on the three biomes (grassland, savanna and karoo) which produce the bulk of the forage supporting the domestic livestock, conservation and the game farming industries. The book has an audience beyond the borders of South Africa in the grassland and savanna areas which stretch through southern and central Africa.;The text is aimed at students concerned with the management of natural ecosystems and also livestock producers and game ranchers who rely on the veld to feed their animals. The text throughout emphasizes the interpretation and application of research results to the practical situation.;All major aspects of veld production and management are covered in this book. It outlines the physiological and ecological principles on which management is based and which underpin the science. The book presents management options based on these underlying principles before dealing with recommended management procedures in each of the main ecological regions of the country.;The contributions to this book collectively represent a component of the expertise available on issues related to veld management in South Africa. They are veld and animal production researchers, conservation managers and planners working both at a practical level, closely in touch with livestock and game farmers, and at the more theoretical level as teachers at colleges and universities.

Landowners and managers, municipalities, the logging and livestock industries, and conservation professionals all increasingly recognize that setting prescribed fires may reduce the devastating effects of wildfire, control invasive brush and weeds, improve livestock range and health, maintain wildlife habitat, control parasites, manage forest lands, remove hazardous fuel in the wildland-urban interface, and create residential buffer zones.

In this practical and helpful manual, John R. Weir, who has conducted more than 720 burns in four states, offers a step-by-step guide to the systematic application of burning to meet specific land management needs and goals.