Soil Acidity and Plant Growth emerged from concerns over increasing acidification of soils under improved pastures over wide areas of southern Australia. While the book has its origin in the problems of acidification of Australian soils under pastures, the authors examine soil acidity within a much broader framework, making their views relevant to all agricultural and natural ecosystems on acid soils. The book's first two chapters discuss the chemistry of soil acidity and the ecological processes leading to it. This is followed by separate chapters on biological responses to soil acidity, covering mineralization of soil nitrogen, incidence of plant diseases, plant mycorrhizal associations, symbiotic nitrogen fixation in legumes, and genetic variability in plant response to toxicities. The remaining chapters focus on the correction of soil acidity problems by liming. These include studies on the rates of application and effectiveness of liming materials; and the development and use of computer modelling procedures to help researchers identify the effects and interactions of soil pH on component processes and to provide assistance to farmers in the management of long-term subterranean clover pastures.

This handbook provides researchers and students with an overview of the field of sustainability indicators (SIs) as applied in the interdisciplinary field of sustainable development. The editors have sought to include views from the center ground of SI development but also divergent ideas which represent some of the diverse, challenging and even edgy observations which are prominent in the wider field of SI thinking. The contributions in this handbook: • clearly set out the theoretical background and history of SIs, their origins, roots and initial goals • expand on the disciplines and modalities employed to develop SIs of various kinds • assess the various ways in which SI data are gathered and the availability (over space and time) and quality issues that surround them • explore the multiplex world of SIs as expressed in agencies around the world, via examples of SI practice and the lessons that have emerged from them • critically review the progress that SIs have made over the last 30 years • express the divergence of views which are held about the value of SIs, including differing theories on their efficacy, efficiency and ethics • explore the frontier of contemporary SI thinking, reviewing ante/post and systemic alternatives This multidisciplinary and international handbook will be of great interest to researchers, students and practitioners working in sustainability research and practice.

What would it take to achieve a genuinely food-secure world—one without hunger or malnutrition, where everyone gets to consume the right quantity and quality of food to live a healthy, active, and productive life? Bringing about such a future requires transforming how our food is grown, managed, and distributed. From production to consumption, food systems must be sustainable, halting environmental degradation and even repairing the damage we have previously done. This book provides an accessible guide to making healthy diets from sustainable food systems available to all. Glenn Denning bridges the divisive worlds of science, policy, and practice. He synthesizes the most relevant literature and shares personal perspectives and insights gained over four decades working in more than fifty countries, coupled with the real-world experience of hundreds of leading experts. Universal Food Security lays out key priorities—sustainable intensification, market infrastructure, postharvest stewardship, healthy diets, and social protection—and presents how to achieve food systems transformation. Denning identifies the education and development of practitioner-leaders as the critical trigger of change. Universal Food Security informs and inspires those leaders—acting on their own and with others through institutions—to achieve a food-secure world. This book is an ideal handbook for students and practitioners looking to transform our food systems at all levels.

Continued population growth, rapidly changing consumption patterns and the impacts of climate change and environmental degradation are driving limited resources of food, energy, water and materials towards critical thresholds worldwide. These pressures are likely to be substantial across Africa, where countries will have to find innovative ways to boost crop and livestock production to avoid becoming more reliant on imports and food aid. Sustainable agricultural intensification - producing more output from the same area of land while reducing the negative environmental impacts - represents a solution for millions of African farmers. This volume presents the lessons learned from 40 sustainable agricultural intensification programmes in 20 countries across Africa, commissioned as part of the UK Government's Foresight project. Through detailed case studies, the authors of each chapter examine how to develop productive and sustainable agricultural systems and how to scale up these systems to reach many more millions of people in the future. Themes covered include crop improvements, agroforestry and soil conservation, conservation agriculture, integrated pest management, horticulture, livestock and fodder crops, aquaculture, and novel policies and partnerships.

This book summarise advanced knowledge and methods to recycle waste and fertilise soils in agriculture. In the near future, waste recycling will no longer be an option because natural resources become rare and costly, urbanisation is blooming and population is growing. In theory, most waste could be recycled. In practice, most waste is wasted. Remarkable aspects include the concepts of waste hierarchy eco-houses in smart cities, microbes and fungi for plant nutrition, and benefits of legume cultivation, biochar application and agropastoralism.

This fundamental book provides a cross-sectoral, multi-disciplinary view on the biobased economy. It explains opportunities for the value-adding production and use of bioresources, while also discussing the main drivers and obstacles involved. The book is divided into three major parts, the first of which introduces readers to the basics of bioresource economics and engineering. In terms of economics, it discusses decision-making from the policy, producer, investor, and citizen perspectives; in terms of engineering, it addresses key technologies and the processing of bioresources, as well as the development of biorefineries for high-value products on large and small scales. In turn, the book’s second part presents cases focused on different types of energy use, and written by practitioners. The cases illustrate the businesses and technologies involved, as well as the roles of citizens, social organisations and policies. The book’s third and last part highlights opportunities in sustainable agriculture, valuable industrial products and innovative services, while also outlining key conditions for success. Written by a team of scholars and practitioners from various engineering, natural-science and social-science disciplines, the book is primarily intended for undergraduate and graduate students, and for practitioners in business and policy who wish to explore the sustainable production and use of bioresources. All theoretical issues are explained with the aid of real-world examples, making the content highly accessible.

Nearly two billion people depend on hundreds of millions of smallholder farmers for food security. Yet, these farmers’ lives also hang in the balance due to their extreme vulnerability to the risks of soil degradation and depletion, soil exhaustion, climate change, and numerous biotic and abiotic stresses. Soil Management of Smallholder Agriculture explores the potential smallholder agriculture hold for advancing global food security and outlines the challenges to achieving this goal. The book addresses the challenges and opportunities that resource-poor and small landholders face and provides recommended management practices to alleviate soil-related constraints, and increase and sustain crop yield and production. It discusses the cultural, economic, social, and technological aspects of sustainable soil management for smallholder farmers. It then examines soil-related and institutional constraints, principles of sustainable agriculture, soil quality improvement, nutrient and soil fertility management, soil carbon sequestration, soil security, efficient use of resources, and agronomic production. Edited by experts, the book makes the case for the adoption of proven technologies of sustainable intensification, producing more from less, both for advancing agronomic production and adapting to changing climate. It outlines a strategy that will usher in a soil-based Green Revolution by increasing the use efficiency of energy-based inputs such as fertilizers, pesticides, and irrigation to restore soil quality, and sequestering carbon in the terrestrial ecosystems. This strategy helps small farms narrow the gap between the actual and attainable crop yield.