1. Sustainable Management of Soil Fertility and Land Resources in Sub-Saharan Africa: A Holistic Approach Boubie Vincent Bado and Andre Bationo 2. The Role of Soil Organic Matter for Maintaining Crop Yields: Evidence for a Renewed Conceptual Basis Per Schjonning, Johannes L. Jensen, Sander Bruun, Lars S. Jensen, Bent T. Christensen, Lars J. Munkholm, Myles Oelofse, Sanmohan Baby, and Leif Knudsen 3. Biosurfactants for Sustainable Soil Management Zulfiqar Ahmad, Muhammad Imran, Samia Qadeer, Sabir Hussain, Rukhsana Kausar, Lorna Dawson and Azeem Khalid 4. Anti-inflammatory Potential of Medicinal Plants: A Source for Therapeutic Secondary Metabolites Nirit Bernstein, Muhammad Akram, Muhammad Daniyal, Hinanit Koltai, Marcelo Fridlender, and Jonathan Gorelick 5. A Review of Tillage Practices and their Potential to Impact the Soil Carbon Dynamics Promil Mehra, Jack Desbiolles, John Baker, Robert E. Sojka, Nanthi Bolan, M. B. Kirkham, Craig Ross, and Risha Gupta 6. Water-nitrogen Co-limitation in Grain Crops C. Mariano Cossani and Victor O. Sadras
DONALD L. SPARKS is the Unidel S. Hallock du Pont Chair and Francis Alison Professor at the University of Delaware. He is internationally recognized for his research in the areas of kinetics of biogeochemical processes and surface chemistry of natural materials. His research has focused on fate and transport of trace metals in soil and water, soil remediation, water quality, and carbon sequestration in soils. Dr. Sparks is the author of two previous editions of Environmental Soil Chemistry and more than 350 refereed papers and book chapters. He is fellow of five scientific societies, and he has been the recipient of major awards and lectureships including the Geochemistry Medal from the American Chemical Society, the Liebig Medal from the International Union of Soil Sciences, the Einstein Professorship from the Chinese Academy of Sciences and the Philippe Duchaufour Medal from the European Geosciences Union. Dr. Sparks served as president of the Soil Science Society of America and the International Union of Soil Sciences, has served on advisory committees for several national laboratories and national and international centers and institutes, and served as chair of the U.S. National Academy of Sciences (NAS) Committee for Soil Sciences and other NAS Committees.