Originally published in 1975 this book analyses the factors making for success and failure in agricultural development among black Zimbabweans during the 20th century. A detailed analysis is given of 2 tribal trust lands, including government policies and administrative control of these areas, voluntary and forced adjustment to land shortage and the economic resources and productivity of peasant cultivators. Settlements under individual land tenure are examined, as are government policies to these, the internal transofrmation of these communities and their economic resources and productivity. There is also a section on irrigation schemes and the reaction of people to irrigation farming. This is an indispensable book in understanding the present-day situation of agriculture in Zimbabwe.

This text not only explores the breeding problems for Agaricus bisporus, the button mushroom, but approaches the subject in the context of the large range of edible mushrooms which are currently under commercial cultivation worldwide. From the background and general objectives of culture collection and breeding to the genetic systems of edible mushrooms and the molecular biological approaches to breeding, the coverage is in-depth and current. The applications of breeding programmes for specific purposes, including provision of a food source, production of high value fungal metabolites and upgrading of lignocellulosic wastes and wastewater treatment are also discussed.

Management of Problem Soils in Arid Ecosystems examines the challenges of managing soils in arid and semiarid regions. These soils contain low organic matter, are not leached, and accumulate lime, gypsum, and/or soluble salts, requiring special management and practices. This book discusses how to identify problems, reclaim the soils, and then use them efficiently and economically. Water management and desertification in these areas are also discussed. It contains extensive references as well as 40 tables and illustrations.

The 2016 referendum resulted in a vote for the United Kingdom to withdraw from the European Union. This has led to frenzied political debate across the whole spectrum of policy, and agriculture is no exception. For the first time in a generation, the future of agriculture is unclear and unfettered by the constraints and incrementalism of the Common Agricultural Policy. This book makes an empirical contribution to the Brexit debate, bringing a social dimension to agri-Brexit and sustainable agriculture discourses. Understanding the social in the context of farmers is vital to developing a way forward on food security and agricultural sustainability. Farmers are the recipients of the market and policy signals that link to global uncertainties and challenges. This book is a commitment to understanding farmers as occupiers and managers of land. Chapters in this book explore farmers' own aspirations and knowledge about patterns of land use and production, which underpin discussions around the environment and sustainability. There is a deficit in understanding what kind of agricultural industry we now have, following years of restructuring and repositioning. This book is an attempt to address that deficit and will appeal to students and researchers exploring agriculture, food politics and rural sociology.

The potato is one of the world's most important food crops. It produces more nutritious food from less land in a shorter time than any other major crop. Therefore advances in the production of new potato varieties will greatly contribute to the world's food supply. The book outlines strategies used in the breeding and testing of potato varieties. It considers prospects for varietal improvement using both traditional and new techniques, including genetic manipulation, tissue culture and protoplast fusion. Opportunities for breeding varieties suitable for propagation from true seed, of particular significance to the agricultural systems of developing countries, are also featured, together with an extensive and bibliography. The book is based on the proceedings of a joint meeting of EAPR and EUCARPIA at King's College, Cambridge, December 1985. It contains contributions from many leading authorities in potato breeding and variety assessment throughout the world, and will interest post-graduate students in plant breeding, genetics and molecular biology, together with professionals engaged in potato research and the application of molecular biology to agriculture.

Plant Breeding Reviews is an open-ended, serial continuation series of review articles on research in plant genetics, especially the breeding of commercially important crops. This detailed analysis bridges the gap between the specialized researcher and the broader community of plant scientists.

MULTI-SCALE BIOGEOCHEMICAL PROCESSES IN SOIL ECOSYSTEMS Provides a state-of-the-art overview of research in soil biogeochemical processes and strategies for greenhouse gas mitigation under climate change Food security and soil health for the rapidly growing human population are threatened by increased temperature and drought, soil erosion and soil quality degradation, and other problems caused by human activities and a changing climate. Because greenhouse gas emission is the primary driver of climate change, a complete understanding of the cycles of carbon and major nutritional elements is critical for developing innovative strategies to sustain agricultural development and environmental conservation. Multi-Scale Biogeochemical Processes in Soil Ecosystems: Critical Reactions and Resilience to Climate Changes is an up-to-date overview of recent research in soil biogeochemical processes and applications in ecosystem management. Organized into three parts, the text examines molecular-scale processes and critical reactions, presents ecosystem-scale studies of ecological hotspots, and discusses large-scale modeling and prediction of global biogeochemical cycles. Part of the Wiley - IUPAC Series on Biophysico-Chemical Processes in Environmental Systems, this authoritative volume: Provides readers with a systematic and interdisciplinary approach to sustainable agricultural development and management of soil ecosystems in a changing climate Features contributions from an international team of leading scientists Examines topics such as soil organic matter stabilization, soil biogeochemistry modeling, and soil responses to environmental changes Discusses strategies for mitigating greenhouse gas emission and improving soil health and ecosystems resilience Includes an introduction to working across scales to project soil biogeochemical responses to climatic change Multi-Scale Biogeochemical Processes in Soil Ecosystems: Critical Reactions and Resilience to Climate Changes is essential reading for scientists, engineers, agronomists, chemists, biologists, academic researchers, consultants, and other professionals whose work involves the nutrient cycle, ecosystem management, and climate change.

Of immeasurable value to students, faculty, and professionals involved in agricultural economics, finance, policy, and a host of agribusinesses, this unique volume brings together leading farmland authorities in the United States and Canada to examine the economic determinants of land value and the consequences of changes in land values. The authors of this timely book provide expert analysis and review of this subject, examining it from the following perspectives: an historical overview of the structure and performance of farmland markets in the United States; the links between farmland values and agricultural policy in the United States; the capital market dimension of farmland values; the mechanics of farmland markets, especially the cost of buying and selling farmland; environmental concerns, including the potential impact of urban encroachment; and, the role of regulations against foreign ownership of farmland on farmland values in Canada.

Continuing in the tradition of its bestselling predecessor, the Handbook of Ecological Indicators for Assessment of Ecosystem Health, Second Edition brings together world-class editors and contributors who have been at the forefront of ecosystem health assessment research for decades, to provide a sound approach to environmental management and sustainable development. Significantly updated and expanded, this authoritative resource details a proven framework for selecting, evaluating, and validating ecological indicators for ecosystem health assessment. It guides readers through the application of this framework to a wide range of ecosystems, including wetlands, estuaries, coastal zones, lakes, forests, marine ecosystems, lagoons, agricultural systems, landscapes, and rivers. The text synthesizes material from a variety of books, journals, and private research, to consider biodiversity, energy needs, ecological economics, and natural capital in the measurement of ecological health. Organized for ease of reference, the first part of the handbook provides the required theoretical background. It presents a complete overview of all relevant ecological indicators-including thermodynamics, resilience estimates, exergy, and emergy indicators. The second part focuses on how to effectively apply the ecological indicators to a number of important ecosystems. It includes many examples and case studies that clearly illustrate the advantages and disadvantages of each method for specific applications. Offering first-hand insight and practical guidance from practitioners in the field, this complete resource supplies the tools and the well-rounded understanding required to diagnose the health of virtually any ecosystem with much improved accuracy.

Farmscape: The Design of Productive Landscapes situates agriculture as a design practice, using a wide range of international case studies and analytical essays to propose lessons for contemporary landscape architects who are interested in integrating agriculture into their designs. Agricultural processes, technologies, and cycles have long shaped landscape architectural projects, from the ornamented farm of the eighteenth century, to contemporary projects that integrate agriculture and ecological restoration. The book describes the history of agriculture within landscape architecture and reveals the diversity of current design practices that use the rhythms and forms of agriculture to create productive farms that are also sites of beauty, community, ecological conservation, remediation, and pleasure. Highly illustrated in full colour, this book provides essential context, resources, and best practice examples of rural and periurban designed sites for professionals and students alike.

Since the 1992 Earth Summit, there have been increased efforts on an international scale to address global climate change. Reducing the increased levels of CO2 and other "greenhouse gases," which are believed to be contributing to this climatic change, will require major effort on the part of the world's governments. This means that the environmental, economic, social, and political consequences of climate change must be understood, and that strategies to mitigate climate change must also address these issues. The workshop detailed in this book concentrated on how economic principles and analysis could contribute to the planning of forestry projects aimed at affecting terrestrial carbon balances. More than 30 international scientists came together for one week near Stockholm, Sweden and divided into working groups charged with addressing a specific issue and preparing a paper within this time frame. This book contains the majority of papers presented at this meeting, and includes both the working group papers and the individually presented papers.

This work examines the issue of accelerated soil erosion, which has become an increasingly serious concern in the twentieth century. Aspects considered include on-site impact of erosion; application of soil science to problems of non-agricultural uses of soil, such as mineland restoration, urban uses and disposal of urban wastes; soil contamination and pollution by industrial activities; and athletic and recreational uses of soil. Soil Quality and Soil Erosion will be a useful text for soil scientists, agronomists, foresters, and environmental scientists as we enter the next century.

Soil degradation has serious global impacts on agronomic, economic, and sociopolitical conditions, however, statistics regarding the degree of these impacts has been largely unreliable. This book aims to standardize the methodology for obtaining reliable and objective data on soil degradation. It will also identify and develop criteria for assessing the severity of soil degradation, providing a realistic scenario of the problem.

Presenting the latest research on cross-cultural people-plant relationships, this volume conveys the psychological, physiological, and social responses to plants and the significant role these responses play in improved physical and mental health. With chapters written by field experts, it identifies research priorities and methodologies and outlines the steps for developing a research agenda to aid horticulturalists in their work with social scientists to gain a better understanding of people-plant relationships. This resource covers a wide array of topics including home horticulture and Lyme disease, indoor plants and pollution reduction, and plants and therapy.

Over 50 percent of the 6,900 million dry tons of sewage sludge generated each year in the United States is land applied. The principal controversies surrounding the land application of biosolids involve heavy metals and pathogens. Land Application of Sewage Sludge and Biosolids is a comprehensive, scientific text providing a complete review of various aspects of this controversial subject, from an extensive discussion of heavy metals and pathogens to the fate and effects of organic compounds. Consideration is given to crop removal of metals and organics, soil erosion, and leaching, as well as to differing approaches and regulations in Europe and Canada. The result is an authoritative, science-based, and unbiased perspective on the benefits and the potential risks of land application to human health and the environment. About the Author: Elliot Epstein, Ph.D. is Chief Environmental Scientist for Tetra Tech, Inc. and an adjunct professor of public health at Boston University School of Public Health. He received his Ph.D. in soil physics from Purdue University and served as a research leader for the U.S. Department of Agriculture's Agricultural Research Service for 16 years. Dr. Epstein has more than 30 years of experience in biosolids composting, and has managed or directed more than 400 composting projects. He has consulted on composting and biosolids management for the USEPA, World Bank, and United Nations.

This second edition of EPA's bestselling book, Description and Sampling of Contaminated Soils: A Field Guide, Second Edition, has been revised and significantly expanded over the original edition. An ideal reference for anyone involved in site investigations, this guide describes how to determine the amount and extent of soil contamination and potential for movement of contaminants in the soil and groundwater. It contains checklists, tables, and step-by-step descriptions of methods and procedures for: Cost-effective, detailed site investigations for evaluating the potential for contaminant transport Field collection of information on soil engineering properties required for remediation selection and design This guide also features an adaptation of soil description procedures used by the U.S. Soil Conservation Service (SCS) for investigating contaminated sites. The SCS soil description and classification procedures, when used in combination with the Unified Soil Classification System currently used by geologists and engineers, greatly improves contaminated site assessments.

Genotype-by-Environment Interaction (GEI) is a prevalent issue among crop farmers, plant breeders, geneticists, and production agronomists. This book brings together contributions from expert plant breeders and quantitative geneticists to better understand the relationship between crop performance and environment. This information can reduce the cost of extensive genotype evaluation by eliminating unnecessary testing sites and by fine-tuning breeding programs. Molecular aspects of GEI are discussed for the first time and key bibliographical references on GEI are included in an appendix.

Vadose Zone Hydrology describes the elements of the physical processes most often encountered by hydrogeologists and ground-water engineers in their vadose zone projects. It illustrates the application of soil physics to practical problems relevant to the characterization and monitoring of the vadose zone. It includes an introduction to physical processes, including basic flow theory, and provides examples of important field-scale processes that must be recognizable by hydrogeologists. Considerable attention is given to the concepts of recharge, including how it is most accurately evaluated in the vadose zone. Field and laboratory methods for characterizing hydraulic properties in the vadose zone are also covered, and case studies illustrating these methods are provided. New and emerging technologies for monitoring the vadose zone, particularly for the purpose of detecting contaminants, are highlighted. In the last section of the book, additional case studies are presented, demonstrating applications related to seepage detection, landfill monitoring, and soil gas investigations. This book is written from the perspective of hydrogeologists and is designed to be directly applicable and to maintain continuity and consistency between chapters. It will be an invaluable primer for environmental or geotechnical consultants, regulators, or students who have no prior formal academic training in unsaturated flow concepts. Because the text contains some of the latest advances in this field, it will be an excellent reference for geologists and engineers currently working on problems of vadose zone hydrology.

Basic Guide to Pesticides covers the physical properties of about 700 pesticides and their contaminants and related health hazards. It is important in dealing with environmental problems in general and individual cases.

This book compiles information relevant to understanding soybean production processes and condenses it into a single volume. The authors identify production practices and bring together diverse information that suggests ways for producers to better utilize the soil and climatic resources of the midsouthern U.S. to enhance production of this valuable and versatile crop. This publication makes a special effort to focus on information that will enhance soybean production in the midsouth, where yields have been lower than those in the upper midwester n portion of the U.S., however, much of the information, such as statistics and crop models, will be applicable to other regions, from Texas to the Carolinas.

For all undergraduate courses in plant propagation at the two-year and four-year colleges and universities. The world standard for plant propagation and horticulture for over 50 years, Hartmann and Kester's Plant Propagation continues to be the field's most complete, up-to-date text on plant propagation. It now contains color figures throughout, promoting learning and making it an even more useful working text and reference. It also contains extensive updates reflecting the latest commercial techniques and understanding of propagation biology. Like previous editions, it is organized into paired chapters on principles and practices, so it can easily be adapted for teaching courses that cover only practical topics, and for courses that also cover conceptual issues.

Americans take pride in their "exceptionalism," not always aware that exceptional excess is part of the package. Compared to other wealthy countries, for example, America stands out as a gluttonous over-consumer: emitting twice as much carbon dioxide per capita as the average for the 27 nations of the European Union, and boasting obesity prevalence numbers that are double the industrial world average. But this is not all; America is also exceptional in the weakness of its national policy efforts to correct the challenges of obesity and climate change. For Paarlberg, these three failures - in food and fuel consumption and policy response - can be linked to the country's unusual material and demographic circumstances, singular political institutions, and unique political culture. American society is defined by the ideals of personal freedom and material abundance, conditions that elected leaders must always pledge to enhance, not diminish. Thus, as Paarlberg argues, democratic governments are unable to take effective preventative action against either climate change or obesity. Both crises will continue to worsen, forcing governments to gradually shift from their posturing of taking preventative action toward implicit acceptance and costly adaptation measures. As Paarlberg shows in America's Excess, the US's pivot toward adaptation is important because it will produce dramatically unequal outcomes both at home and abroad. An effort to live with accelerating climate change may be feasible for the United States over a decade or two, when investments in adaptive technologies and infrastructures become affordable, but it will increase the vulnerability of poor countries that are unable to protect themselves. An American decision to live with obesity produces a different kind of inequity. It does little harm to foreign nations, but it will worsen outcomes for the obesity-prone segment of America's population, especially racial minorities and the poor. Under such circumstances, and absent an unforeseen techno-scientific breakthrough in medicine or energy, the new challenge of good government will be to ensure equity between the wealthy and poor when making public investments to treat obesity or to protect vulnerable communities from extreme weather.

This book focuses on the impact of waste disposal to land, providing an outline of the underpinning knowledge of processes associated with contaminant sorption, transport, and plant uptake. It presents case studies highlighting waste management technologies used in the Australasia-Pacific region.

This unique book examines the beneficial aspects of animal waste as a soil resource - not simply as an agricultural by-product with minimal practical use. Topics include o types of livestock waste - swine, poultry, dairy o methods and management of waste utilization o storage, handling, processing and application of animal waste o supplying crop nutrients o economics of waste utilization o new modeling and management techniques o nonpoint source pollution, water quality, leaching, and air quality.

Agrochemicals and agricultural practices have a tremendous impact on environmental quality, particularly their role in water quality degradation. Soil Processes and Water Quality examines principles and practices that minimize the risks of water pollution while enhancing agricultural intensification and productivity. It focuses on how agricultural practices-such as tillage methods, use of fertilizers and manures, cropping systems, and the use of agrochemicals and pest control measures-impact soil processes and affect water quality. Extensive coverage of such topics as water contamination by runoff, leaching, macropore flow, and sediments is also included. Rapid increases in the use of agrochemicals make Soil Processes and Water Quality an indispensable reference for soil scientists, water quality professionals, researchers, environmental chemists, agrochemicals professionals, government agency employees, academic instructors, agronomists, and students.