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.

An Introduction to Soils for Environmental Professionals assembles and presents the basic principles of each of the major soil science fields. It introduces fundamental concepts and shows the interrelationships between the various branches of soil science - from mineralogy to soil physics. Each chapter was reviewed by a professional in the particul

Megaplasmids are extrachromosomal genetic elements in the size range of 100 kb and larger. They are found in physiologically and phylogenetically diverse groups of bacteria and archaea. By definition, megaplasmids are not essential for the viability of their hosts under all growth conditions, but paradoxically many megaplasmids carry the genetic information for the defining and characteristic traits of the organism in which they reside.

Microbial Megaplasmids reviews our knowledge of the extensively studied representatives, such as the catabolic plasmids of the pseudomonads, the rhizobial Sym plasmids, the Ti plasmids of the genus Agrobacterium and the giant enterobacterial virulence plasmids. It also presents snapshots of more recently discovered megaplasmids. The contribution of megaplasmids to the biology of their hosts is described, highlighting the interactions between megaplasmid and chromosomal genes.

After almost fifteen years in the laboratory and in the test plots, bioengineered crops arrived to the market in the mid-1990s. Adoption was rapid and wide spread. In 1996, less than 4 million acres in six countries were planted with bioengineered crops. By 2001, worldwide adoption had expanded to more than 115 million acres. Important questions quickly followed. What were the factors driving the widespread adoption and rapid diffusion of these first-generation agrobiotech nologies? What were their economic and environmental impacts? How were such impacts distributed among large and small producers, innovators and adopters, developed and developing countries, exporters and importers, domestic and foreign consumers? How were such impacts and their distribu tion affected by market structure and government policies? A growing body of literature has provided valuable answers to some of these questions. However, an assessment that accounts for the full range of differences in geography, weather, pests, farm structures, and institutions had not been completed. It brings together leading This book provides just such an assessment. authors from around the world who have analyzed the production, environ mental, and economic impacts of first-generation crop biotechnologies. By pooling experiences across various countries, time periods, crops, and traits, this global panel is able to synthesize a complete picture of the impacts of first-generation crop biotechnologies."

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.

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.

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.

Countryside Stewardship is the first cross-country, empirical study to examine the market effects of stewardship policies across Europe, as well as their possible impact on the supply of agricultural commodities.
This timely and insightful book examines the economic nature of the agri-environmental measures that were intended to reduce the negative effects of agricultural production on countryside amenities and stimulate the positive contributions of farmers to countryside management. An international team of authors offers a comparative analysis of stewardship policies across eight different European countries, drawing upon a classification of 330 different agri-environmental measures introduced since 1985. The objective of their analysis is to provide policy makers and all those involved - farmers, extension officers, researchers - with more insight into the organisation and effects of these policies and to present some options for a more effective implementation of policies in this new field.

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.

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.

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.

With contributions from more than 30 internationally renowned experts, this book combines coverage of theory with coverage of global practices. Highlighting the day-to-day challenges of organic crop management for cost-effective real-world application, the book explores the biological control of diseases in 12 major crops. It focuses on the use of host plant resistance through transgenics and induced systemic resistance as a part of biological control. Topics covered include the role of biocontrol agents for signalling resistance, effective ecofriendly alternative to combat bacterial, fungal, and viral infestation, and transgenic crops in disease management.

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.

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.

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.

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.

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.

North American Psocoptera provides a complete review of the 28 families, 78 genera and 287 species of the order Psocoptera found in the United States and Canada. This comprehensive book contains keys to all of the known taxa of Psocoptera which have been found in the study area, including three genera named as new. Not only are the native and established species included, but also those which have been taken at ports of entry in human commerce. The book contains differential diagnoses of the taxa above species level. For each named species there is an account consisting of synonymy, recognition features, relationships, distribution, and habitat. Included are 119 pages of illustrations, glossary, bibliography and index.

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 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.