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The Southern African Development Community (SADC) and its Member States are making renewed efforts to revive agriculture in the region. Given that much of it is water-stressed, appropriate and sustainable land and water management practices are vital to achieving this objective. Recognising this, SADC's Land and Water Management Applied Research and Training Programme has convened two scientific symposiums. Held in Lilongwe, Malawi, in February 2006, the inaugural symposium brought together practitioners from 10 participating SADC countries to deliberate on land and water management for sustainable agriculture, and discuss how the most recent research and development advances in land and water management might be made more relevant to policymakers as well as the region's small-scale farmers. The edited contributions to this first symposium appear in this volume. The second symposium was held in Gaborone, Botswana, in February 2007, and brought together regional experts to discuss opportunities for improving water use and water use efficiency in agriculture in semi-arid and arid areas. The edited contributions to the second symposium appear in a companion volume entitled Land and Water Management in Southern Africa: Towards Better Water Use in Agriculture in Semi-Arid and Arid Areas (AISA 2008). It is hoped that these two volumes will help to disseminate regional expertise on land and water management to a wider audience, thus helping policy-makers and others to strengthen the agricultural sector in the region, and, in so doing, improve its food security and the wellbeing of its people.
Soil Fertility Improvement and Integrated Nutrient Management: A Global Perspective presents 15 invited chapters written by leading soil fertility experts. The book is organized around three themes. The first theme is Soil Mapping and Soil Fertility Testing, describing spatial heterogeneity in soil nutrients within natural and managed ecosystems, as well as up-to-date soil testing methods and information on how soil fertility indicators respond to agricultural practices. The second theme, Organic and Inorganic Amendments for Soil Fertility Improvement, describes fertilizing materials that provide important amounts of essential nutrients for plants.The third theme, Integrated Nutrient Management Planning: Case Studies From Central Europe, South America, and Africa, highlights the principles of integrated nutrient management. Additionally, it gives case studies explaining how this approach has been implemented successfully across large geographic regions, and at local scales, to improve the productivity of staple crops and forages.
This book briefly traces the evolution of integrated natural resources management (INRM) concepts in the CGIAR. Selected field research projects exemplify the approaches that several Centres and their partners are using to develop international public goods (IPGs) which improve the productivity and sustainability of their mandate commodities and resource systems through the use and management of natural resources.
This book documents a decade of research, methodological innovation, and lessons learned in an eco-regional research-for-development program operating in the eastern African highlands, the African Highlands Initiative (AHI). It does this through reflections of the protagonists themselves—AHI site teams and partners applying action research to development innovation as a means to enhance the impact of their research. The book summarizes the experiences of farmers, research and development workers and policy and decision-makers who have interacted within an innovation system with the common goal of implementing an integrated approach to natural resource management (NRM) in the humid highlands. This book demonstrates the crucial importance of "approach" in shaping the outcomes of research and development, and distils lessons learned on what works, where and why. It is enriched with examples and case studies from five benchmark sites in Ethiopia, Uganda, Kenya and Tanzania, whose variability provides the reader with an in-depth knowledge of the complexities of integrated NRM in agro-ecosystems that play an important role in the rural economy of the region. It is shown that the struggle to achieve sustainable agricultural development in challenging environments is a complex one, and can only be effectively achieved through combined efforts and commitment of individuals and institutions with complementary roles.
As agroecology gains momentum in the international research-for-development arena, there is an urgent need for methods and tools to support the codesign and evaluation of agroecological systems and their transitions. The social and ecological complexity of agroecosystems, their dynamics, uncertainties and sustainability, calls for a holistic, systemic approach to agroecology. As such, several questions arise for example: how do we deal with heterogeneity, landscapes, biodiversity or learning processes in agroecosystems analysis? How do we categorise diversity or analyse trade-offs in social-ecological interactions? How do we conceptualise, codesign and monitor agroecological transitions? This book sets out to answer these questions by building on the valuable ‘classics’ in agroecology. The book presents a systems perspective that underpins a combination of methodologies, ranging from participatory tools and field observations to mathematical simulation modelling. Researchers, advanced students and transdisciplinary practitioners will find in this book insights and methods to design research and (co-) innovation processes to foster agroecological transitions.
Faced with challenges of resource scarcity and environmental degradation, it is important to adopt innovative farming systems that maximize resource efficiency while protecting the environment. Soil-Specific Farming: Precision Agriculture focuses on principles and applications of soil-specific farming, providing information on rapidly evolving agri
In-depth treatments of the soil quality concept, its history, and its applicability in research and in developed and developing societiesAll 18 chapters are written by well-established experts from Europe, North America and AustraliaSoil quality is a concept that allows soil functions to be related to specific purposes. Managing soil quality takes a management oriented approach by identifying key issues in soil quality and management options to enhance the sustainability of modern agriculture. Topics covered include major plant nutrients (N, P, K), soil acidity, soil organic matter, soil biodiversity, soil compaction, erosion, pesticides and urban waste.