1. Root Systems of Major Tropical Root and Tuber Crops: Root Architecture, size, and Growth and Initiation of Storage Organs Peter J. Gregory and Tobias Wojciechowski 2. Nanotechnology Support the Next Agricultural Revolution: Perspectives to Enhancement of Nutrient Use Efficiency Luca Marchiol, Michele lafisco, Guido Fellet and Alessio Adamiano 3. Crop Spatial Uniformity, Yield and Weed Suppression Ping Lu, Baiwen Jiang and Jacob Weiner 4. Soil Research Challenges in Response to Emerging Agricultural Soil Management Practices Anja-K. Techen, Katharina Helming, Nicolas Bruggemann, Edzo Veldkamp, Barbara Reinhold-Hurek, Marco Lorenz, Stephan Bartke, Uwe, Heinrich, Wulf Amelung, Katja Augustin, Jens Boy, Marife Corre, Rainer Duttman, Robin Gebbers, Norman Gentsch, Rita Grosch, Georg Guggenberger, Jurgen Kern, Ralf Kiese, Michael Kuhwald, Peter Leinweber, Michael Schloter, martin Wiesmeier, Traud Winkelmann and Hans-Jorg Vogel 5. Site-specific Seeding: Principles and Technologies M. A. Munnaf, G. Haesaert, M. V. Meirvenne and A. M. Mouazen 6. The Vanishing Legacy of Soil Salinity Data from Irrigated Districts: A Case Study from Spain and a Call for Action Carmen Castaneda, Juan Herrero and Borja Latorre
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.