The world population will grow more rapidly during the few coming years. This must be accompanied by a parallel increase in the agricultural production to secure adequate food. Sustainability considerations mandate that alternatives to chemical nitrogen fertilizers must be urgently sought. Biological nitrogen (N2) fixation, a microbiological process which converts atmospheric N2 into a plant-usable form, offers this alternative. Among these renewable sources, N2-fixing legumes offer an economically attractive and ecologically sound means of reducing external inputs and improving internal resources. Environmental factors such as drought, elevated temperature, salinity, soil acidity and rising CO2 are known to dramatically affect the symbiotic process and thus play a part in determining the actual amount of nitrogen fixed by a given legume in the field. Understanding how nodule N2 fixation responds to the environment is crucial for improving legume production and maintaining sustainability in the context of global change. In this thoughtful and provocative new Brief, we provide critical information on how current and projected future changes in the environment will affect legume growth and their symbiotic N2 fixing capabilities. Each section reviews the main drivers of environmental change on the legume performance that include drought, elevated temperature, salinity and rising CO2, and soil acidity. Importantly we discuss the molecular approaches to the analysis of the stress response in legumes and the possible biotechnological strategies to overcome their detrimental effects.

Phosphorus is essential to all life. A critical component of fertilizers, Phosphorus currently has no known substitute in agriculture. Without it, crops cannot grow. With too much of it, waterways are polluted. Across the globe, social, political, and economic pressures are influencing the biogeochemical cycle of phosphorus. A better understanding of this non-renewable resource and its impacts on the environment is critical to conserving our global supply and increasing agricultural productivity. Most of the phosphorus-focused discussion within the academic community is highly fragmented. Phosphorus, Food, and Our Future will bring together the necessary multi-disciplinary perspectives to build a cohesive knowledge base of phosphorus sustainability. The book is a direct continuation of processes associated with the first international conference on sustainable phosphorus held in the United States, the Frontiers in Life Sciences: Sustainable Phosphorus Summit, though it is not a book of conference proceedings; rather, the book is part of an integrated, coordinated process that builds on the momentum of the Summit. The first chapter will introduce the biological and chemical necessity of phosphorus. The subsequent ten chapters will explore different facets of phosphorus sustainability and the role of policy on future global phosphorus supplies. The final chapter will synthesize all of the emerging views contained in the book, drawing out the leading dilemmas and opportunities for phosphorus sustainability.

Ethanol as an alternative fuel is receiving a lot of attention because it addresses concerns related to dwindling oil supplies, energy independence, and climate change. The majority of the ethanol in the US is produced from corn starch. With the US Department of Energy's target that 30% of the fuel in the US is produced from renewable resources by 2030, the anticipated demand for corn starch will quickly exceed the current production of corn. This, plus the concern that less grain will become available for food and feed purposes, necessitates the use of other feedstocks for the production of ethanol. For the very same reasons, there is increasing research activity and growing interest in many other biomass crops. Genetic Improvement of Bio-Energy Crops focuses on the production of ethanol from lignocellulosic biomass, which includes corn stover, biomass from dedicated annual and perennial energy crops, and trees as well as a number of important biomass crops. The biomass is typically pretreated through thermochemical processing to make it more amenable to hydrolysis with cellulolytic enzymes. The enzymatic hydrolysis yields monomeric sugars that can be fermented to ethanol by micro-organisms. While much emphasis has been placed on the optimization of thermo-chemical pretreatment processes, production of more efficient hydrolytic enzymes, and the development of robust microbial strains, relatively little effort has been dedicated to the improvement of the biomass itself.

This volume, Temperate Fruits: Production, Processing, and Marketing, presents the latest pomological research on the production, postharvest handling, processing and storage, and information on marketing for a selection of temperate fruits. These include apple, pear, quince, peach, plum, sweet cherry, kiwifruit, strawberry, mulberry, and chestnut. With chapters from fruit experts from different countries of the world, the book provides the latest information on the effect of climate change on fruit production, organic fruit growing and advanced fruit breeding, the nutraceutical value and bioactive compounds in fruits and their role in human health, and new and advanced methods of fruit production. Topics include microirrigation, sustainable nutrient management, crop protection and plant health management, and farm mechanization.

Reproductive biology is the basis of species improvement and a thorough understanding of this is needed for plant improvement, whether by conventional or biotechnological methods. This book presents an up to date and comprehensive description of reproduction in lower plants, gymnosperms and higher plants. It covers general plant biology, pollination, pollen-pistil interaction, post-fertilization changes, and seed dormancy.

"...a well-curated collection of chapters that provides a broad state-of-the-art survey of how roots contribute to plant crop performance and edaphic stress tolerance...Given the urgency to deploy sustainable and resilient agricultural technologies, this excellent collection demonstrates how novel approaches and collaborative trans-disciplinarity can prepare the field of root biology for transformative, real-world impacts." (Annals of Botany) Recent decades have seen a dramatic increase in research on plant roots. A deeper understanding of the complex ways roots interact with soils is making it possible to 'design' roots to optimise nutrient/water uptake in low-input environments, as well as deliver other benefits such as improved soil health and reduced nutrient leaching. Continued research is needed in this important area so that it can contribute to more sustainable, 'climate-smart' crop production. Understanding and improving crop root function features authoritative reviews of current research in all aspects of root science, including root growth regulators, root anatomy, nutrient acquisition and root system architecture. This collection discusses the responses of plant roots to abiotic and biotic stresses and how understanding nutrient uptake can be exploited to optimise root function. The book concludes with a dedicated section on methods used to improve crop root function and crop nutrient use efficiency, such as the use of plant growth-promoting rhizobacteria (PGPR). With its eminent editor and international array of expert authors, Understanding and improving crop root function will be a standard reference for university researchers in crop physiology and nutrition, government and other agencies supporting agriculture, companies supplying crop nutrition products and services, as well as farmers.

In relation to the origin and spread of grasses, domestication is a recent event confined to about the last ten thousand years and to relatively few grasses. Part I of Grass Evolution and Domestication considers, from an evolutionary point of view, grass taxonomy, the origin and diversification of C4 photosynthesis, S-Z self-incompatibility and apomixis. It also includes a discussion of how the grass inflorescence and the spikelet could have originated. In Part II the origins of domestication are explored, both for cereals and for grasses which have latterly come to have either amenity or ecological significance. For the major cereals, domestication now involves not only classical plant breeding but also the application of molecular techniques to obtain new varieties with desirable characteristics. The world's three most important cereals, wheat, maize and rice, are therefore presented as model systems in an attempt to explore the interaction of plant breeding, cytogenetics and molecular biology.

The work of Nickolay Ivanovich Vavilov has formed the basis of much of the study of plant genetic resources that is carried out. In recognition of his contribution to plant science, and to commemorate the centenary of his birth, a collection of all of Vavgilov's works on the origin and geography of cultivated plant species was published in Russian in 1987. This English translation sees the publication of these seminal papers in their original form, but not original language, for the first time. The structure of the book, with papers arranged in chronological order from 1920 to 1940, provides a unique opportunity to retrace both the development Vavilov's theories on cultivated plants and his gradual creation of a definite terminology. the book will be of great interest to all those concerned with the development of cultivated plant species, not only in terms of the history of this discipline and its status, but also its future direction.

While preparing the first edition of this textbook I attended an extension short course on writing agricultural publications. The message I remember was "select your audience and write to it. " There has never been any doubt about the audience for which this textbook was written, the introductory course in crop breeding. In addition, it has become a widely used reference for the graduate plant-breeding student and the practicing plant breeder. In its prepa ration, particular attention has been given to advances in plant-breeding theo ry and their utility in plant-breeding practice. The blend of the theoretical with the practical has set this book apart from other plant-breeding textbooks. The basic structure and the objectives of the earlier editions remain un changed. These objectives are (1) to review essential features of plant re production, Mendelian genetic principles, and related genetic developments applicable in plant-breeding practice; (2) to describe and evaluate established and new plant-breeding procedures and techniques, and (3) to discuss plant breeding objectives with emphasis on the importance of proper choice of objec tive for achieving success in variety development. Because plant-breeding activities are normally organized around specific crops, there are chapters describing breeding procedures and objectives for the major crop plants; the crops were chosen for their economic importance or diversity in breeding sys tems. These chapters provide a broad overview of the kinds of problems with which the breeder must cope."

This book was written to provide an integrated account of barley, induding its cultivation, nature and uses. An attempt has been made to cut across the unjustified and obstructive divisions between pure science, applied science, technology, botany, biochemistry, agronomy, and so on. Limitations of space preclude the use of more illustrative material or references, or even complete accounts of various topics. However sufficient information is given to enable the reader to understand the general principles and to find his or her way readily into the literature to obtain further information. Emphasis has been placed on general principles rather than details. In becoming familiar with the literature one becomes acquainted with the effects of the cereal or religion, the English language and the development of agriculture and biochemistry. The comparison between 'parallel literatures' is often stimulating also. For example one is forced to conclude that many of the agricultural problems of poor 'seed vigour' would be overcome if seedsmen used the maltsters techniques for breaking dormancy and speeding 'post-harvest maturation'. Barley is the world's fourth most important cereal after wheat, rice, and maize. It is the most widely cultivated, being grown from the equator to 700N (Scandinavia), from the humid regions of Europe and Japan to the Saharan and Asiatic Oases, and from below sea level in Palestine to high up mountains in the Himalayas, E. Africa and S. America. Some where in the world it is being sown or harvested at every time of the year."

One of the world centers of crop evolution and origin, Ethiopia has long been recognized as an important area of diversity for several major and various minor crops. Based on an international conference held in Addis Ababa, this book describes how plant genetic diversity in Ethiopia is of vital importance in breeding new varieties of crops with desirable characteristics, such as increased resistance to pests and diseases and greater adaptation to heat and drought. The three main sections in the book consider the Ethiopian center of diversity, germ plasm or genetic material collection and conservation in Ethiopia, and the evaluation and utilization of Ethiopian genetic resources. A broad range of food and feed crops and plants of medicinal and industrial importance are discussed, both at a national and international level. A brief account of conservation strategies and gene bank problems unique to Ethiopia is also given. The importance of Ethiopia's plant genetic resources to world agriculture has been demonstrated on more than one occasion. Plant breeders, geneticists, and botanists throughout the world will, therefore, find this unique book a valuable source of information and an essential reference work.

This text and reference book was written because of the urgings of my colleagues here and abroad and also by my students to fill the need for a comprehensive book describing vegetables important as food crops of the world. in this book was first used as outlines for the course on The material world vegetables taught by the staff of the Department of Vegetable Crops at the University of California at Davis. Over the course of the decade the author taught the course, new topics were added with each succeeding year. In 1978 the handouts were revised and compiled into a syllabus. In addition to the students taking the course, the syllabus was purchased and used by others as a reference book. Word ofits existence travelled far; the syllabus is presently used by one other university in the United States and by another in a foreign country. This edition has been extensively revised; many new materials and references have been added. Included are many photographs taken by the author in his travels abroad. The book has three parts. The first is introductory and background meant for students who are not familiar with vegetables as food crops.

When one is privileged to participate long enough in a professional capacity, certain trends may be observed in the dynamics of how challenges are met or how problems are solved. Agricultural research is no exception in view of how the plant sciences have moved forward in the past 30 years. For example, the once grand but now nearly forgotten art of whole plant physiology has given way almost completely to the more sophisticated realm of molecular biology. What once was the American Society of Plant Physiologists' is now the American Society of Plant Molecular Biology; a democratic decision to indemnify efforts to go beyond the limits of the classical science and actually begin to understand the underlying biological basis for genetic regulation of metabolic mechanisms in plants. Yet, as new technologies open windows of light on the inner workings of biological processes, one might reminisce with faint nostalgia on days long past when the artisans of plant physiology, biochemistry, analytical chemistry and other scientific disciplines ebbed and waned in prominence. No intentional reference is made here regarding Darwinism; the plant sciences always have been extremely competitive. Technology is pivotal. Those who develop and/or implement innovative concepts typically are regarded as leaders in their respective fields. Each positive incremental step helps bring recognition and the impetus to push a scientific discipline forward with timely approaches to address relevant opportunities.

The first systematic analysis of the early nineteenth-century allotment movement. The living standards of the rural poor suffered a severe decline in the first half of the nineteenth century as a result of high population growth, changing agricultural practices, enclosure and the decline of rural industries. Allotment provision was the most important counterweight to the pressures. This book offers the first systematic analysis of the early nineteenth-century allotment movement, providing new data on its chronology and on the number, geographical distribution, size, rents, cultivation yields and effect on living standards of allotments. It thus shows how the movement brought the culture of the rural labouring poor more closely into line with the mainstream values of respectable mid-Victorian England, and casts new light on central aspects of early and mid-nineteenth-century social and economic history, agriculture and rural society. JEREMY BURCHARDT is lecturer in Rural History,University of Reading.

Grass is a very important world crop. In some countries, for example the UK, Australia and New Zealand, animal products from grassland make a greater contribution to the value of agricultural production than does any other crop. Yet research being undertaken to further. our understanding of the factors affecting the growth and productivity of grasslands has trailed in the shadow of the determined efforts made to improve our knowledge of cereals and, to a somewhat lesser extent, legumes. However, in spite of its low profile, grassland research has resulted in considerable advances in our knowledge in the last 20 years, and we feel that this book provides a timely opportunity to bring together some of this work in a review of what is primarily the ecophysiology of the temperate grass crop. Unlike other crops grown for their grain or vegatative parts, grass and grassland products are used almost entirely for the feeding of ruminant animals; the interaction of the sward and the animal thus adds an extra dimension to investigations of the productivity of grassland. No one author could adequately encompass the breadth of work covered in the book. Acknowledged experts have therefore been selected as contributors to provide an up-to-date review of their own specialized areas. Whilst multi author texts can cause problems of lack of uniformity of approach, each contributor has been made aware of the contents of the other chapters in an attempt both to provide continuity and to prevent glaring overlaps."

Lacewings are predatory insects which attack and kill large numbers of insect pests. Lacewings in the Crop Environment addresses both the theoretical and practical aspects of lacewing biology and their use in crop protection. The book opens with a section on lacewing systematics and ecology. Next, lacewings as predators in a wide variety of commercially important crops are reviewed and this is followed by a section on the principles of using lacewings in pest control. The possible impact of genetically modified crops on lacewing populations is also discussed. Finally, a fascinating array of case studies of lacewing use in many crops from around the world is presented, and future uses of lacewings speculated upon. Lacewings in the Crop Environment is an essential reference work and practical handbook for students, researchers of biological control, integrated pest management and agricultural science, and for field workers using lacewings in pest management programmes worldwide.

During the 1970s and 1980s, the technique of mutation breeding made a substantial, although often poorly recognized, contribution to crop improvement. Later, as the techniques of molecular biology become more widely adopted by plant breeders, this comprehensive summary sets mutation breeding in that context and relates it to other breeding techniques, including those most recently developed. The book opens with a general introduction to plant breeding and a review of the development of mutation breeding, including consideration of the strengths and weaknesses of the technique. Chapters covering the underlying theory are followed by sections which consider more practical aspects such as in vitro techniques, techniques used for seed propagated crops and techniques used for vegetatively propagated crops. Case studies and examples are included throughout and a list of almost 1400 references provides a valuable resource for those new to the field.

From prehistoric times man has had a pecial s relationship with seed plants - as a source of food, materials for tools, buildings, clothing and pharmaceuticals, and for ornamenting his surroundings for his own delight (probably in that chronological order which, incidentally, also gives some indication ofthe priorities oflife). Today man's most important staple foods are derived directly from seeds as they have been since neolithic times. (It is a sobering thought, as Harlan* has pointed out, that nothing significant has been added to his diet since then. ) From those times he must have learned to collect, conserve and cultivate seeds; and the accumulated experience has been handed down. This book then is part of an ancient tradition, for here we are still primarily concerned with these skills. Seeds are plant propagules comprised of embryos in which growth has been suspended, usually supplied with their own food reserves and protected by special covering layers. Typically they are relatively dry structures compared with other plant tissues and, in this condi tion) they are resistant to the ravages of time and their environment. But resistant is a relative tenn and seeds do deteriorate: the type, the extent and the rapidity of the deterioration, and the factors which control it are important to agronomists, horticulturalists, plant breeders, seedsmen, seed analysts, and those concerned with the conservation of genetic resources.

"This book is what a review should be...a complete book on a hugely relevant topic...It is a preview of a new era in agricultural development that brings excitement and vast potential to tackle the challenge of feeding a growing population sustainably." Review in Bio Based Press "In addition to being well written and structured, this book is edited by some of the most prominent authors in the field of biostimulants...It meets the need for a reliable and comprehensive review on current legislation, challenges and peer-reviewed scientific results... a comprehensive guide to the potential roles of the different biostimulant categories in sustainable agriculture." Chronica Horticulturae With increasing concerns about the environmental impact of fertilizers, there is a growing need for the sector to develop more sustainable, 'climate-smart' methods of crop production. Biostimulants have attracted growing attention since they offer the potential to enhance yields through stimulating natural processes in crops. Biostimulants for sustainable crop production provides a comprehensive review of the key advances in understanding and using biostimulants. This collection covers the major groups of biostimulants, from humic substances and seaweed extracts to protein hydrolysates and plant growth-promoting rhizobacteria (PGPR), as well as the practical application of biostimulants in areas such as enhancing nutrient use efficiency (NUE). With its distinguished editors and international range of expert authors, Biostimulants for sustainable crop production will be a standard reference for those researching crop nutrition, government and other bodies supporting more sustainable agriculture as well as agronomists and farmers.

Crop water use can be increased by management of surface runoff, groundwater, irrigation, and soil water. Technological innovations to enhance availability of water for agricultural crops depend on soil and site-specific conditions. Devoted to the principles and practices of enhancing water use efficiency, Soil Water and Agronomic Productivity addresses current problems associated with water supplies required for agricultural purposes and food production.

Written for professionals and students in agricultural fields, the book focuses on innovative technologies for improving soil water availability, enhancing water use efficiency, and using productive irrigation systems. It also presents techniques to conserve water in the root zone as well as remote sensing techniques to assess soil water regime and predict drought on a regional scale.

Soil water management is crucial to reducing the vulnerability to agronomic drought. There are numerous examples of aquifers that have been severely depleted by misuse and mismanagement. Soil Water and Agronomic Productivity explains the factors and causes of the mismanagement of soil water and proposes options for sustainable and efficient use of scarce water resources. Meeting the global food demand will require careful worldwide management of soil and water resources, and this can only be done by sharing information and knowledge.

Part of the Advances in Soil Science Series

Post-harvest losses of cereals and other grains, whether from spoilage microorganisms or insect pests, remain a significant issue in both the developed and developing world. Challenges include restrictions on chemicals for decontamination and increasing levels of insect resistance. Advances in postharvest management of cereals and grains provides a comprehensive review of the latest research on the causes of postharvest cereal losses, as well as the key research on the detection and control of fungal contaminants. This collection includes authoritative discussions led by leading experts on the viability of different technologies implemented to control postharvest losses, such as fumigation, biopesticides, controlled atmospheres and control of fungal contamination.

This new volume looks at the evolution and challenges of sustainable agriculture, a field that is growing in use and popularity, discussing some of the important ideas, practices, and policies that are essential to an effective sustainable agriculture strategy. The book features 25 chapters written by experts in crop improvement, natural resource management, crop protection, social sciences, and product development. The volume provides a good understanding of the use of sustainable agriculture and the sustainable management of agri-horticultural crops, focusing on eco-friendly approaches, such as the utilization of waste materials. Topics include ecofriendly plant protection measures, climate change and natural resource management, tools to mitigate the effect of extreme weather events, agrochemical research and regulation, soil carbon sequestration, water and nutrient management in agricultural systems, and more. Key features: Discusses sustainable agriculture within the framework of recent challenges in agriculture Looks at the development and diversification of crops and cultural practices to enhance biological and economic stability Discusses innovative nanotechnologies in research and production technologies Highlights the development of new varieties in agri-horticultural crops Discusses use of recent technologies for soil-plant-microbe-environment interactions.

The book describes the history of Brassica oilseed crops, introduces the Brassica genome, its evolution, diversity, classical genetic studies and breeding. It also delves into molecular genetic linkage and physical maps, progress with genome sequencing initiatives, mutagenesis approaches for trait improvement, proteomics, metabolomics and bioinformatics. The concluding of portion provides detailed methods for whole genome marker assisted breeding, the genetics and genomics of important traits including disease resistance, herbivory, insect and abiotic stress resistance, and discusses the future prospects for Brassica improvement through genomics. This volume provides a state of the moment view of current Brassica genetics, genomics and breeding research which is the foundation for the continued understanding of oilseed Brassica species, their genomes, evolution and further potential as important food and biofuel crops.

Food security and environmental conservation are two of the greatest challenges facing the world today. It is predicted that food production must increase by at least 70% before 2050 to support continued population growth, though the size of the world's agricultural area will remain essentially unchanged. This updated and thoroughly revised second edition provides in-depth coverage of the impact of environmental conditions and management on crops, resource requirements for productivity and effects on soil resources. The approach is explanatory and integrative, with a firm basis in environmental physics, soils, physiology and morphology. System concepts are explored in detail throughout the book, giving emphasis to quantitative approaches, management strategies and tactics employed by farmers, and associated environmental issues. Drawing on key examples and highlighting the role of science, technology and economic conditions in determining management strategies, this book is suitable for agriculturalists, ecologists and environmental scientists.