This book reviews the distribution of soils across Egypt, their history, genesis, pollution and management. The conservation of Egyptian soils, soils and their connections to human activities, as well as some future soil issues are also highlighted. It is well known that soil is the main source for food, feed, fuel and fiber production. Accordingly, the study of soils is not only a crucial issue but also an urgent task for all nations worldwide. Due to their important roles in agroecosystems as well as many aspects of our lives, soils have direct and indirect functions in the agricultural, industrial and medicinal sectors. Therefore, understanding the physical, chemical and biological properties of soils, as well as soil security, have now become emerging issues. Climate change has a very dangerous dimension in Egypt concerning the rising sea level. Many coastal zones are already threatened by this sea level rise, and may ultimately disappear. At the same time, water shortages and soil pollution represent the main challenges for the Egyptian nation. Generally speaking, the environmental challenges that Egypt now faces include improving and sustaining soil health, soil carbon sequestration, wastewater treatment, and avoiding the overuse of fertilizers and pesticides. Therefore, this book examines in detail the soils of Egypt from various perspectives including their genesis, history, classification, pollution and degradation, soil security, soil fertility and land uses.

Judicious soil fertility management is crucial for sustainable crop production and food security in sub-Saharan Africa (SSA). This book describes the various concepts and approaches underlying soil and soil fertility management research in SSA over the last fifty years. It provides examples of important innovations generated and assesses the position of research within the research-to-development continuum, including how innovations have been validated with the intended beneficiaries. Using the experience of the International Institute of Tropical Agriculture (IITA) as a case study, the authors analyse how processes, partnerships and other factors have affected research priorities, the delivery of outputs, and their uptake by farming communities in SSA. They evaluate both successes and failures of past investments in soil fertility research and important lessons learnt which provide crucial information for national and international scientists currently engaged in this research area. The book is organised in a number of chapters each covering a chronological period characterised by its primary research content and approaches and by the dominant research paradigms and delivery models.