Advances in Agronomy

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.

• Mineral-Organic Associations: Formation, Properties, and Relevance in Soil EnvironmentsMarkus Kleber, Karin Eusterhues, Marco Keiluweit, Christian Mikutta, Robert Mikutta, Peter S. NicoThe Use of Biostimulants for Enhancing Nutrient UptakeMoshe Halpern, Asher Bar-Tal, Maya Ofek, Dror Minz, Torsten Muller, Uri YermiyahuWater-yield relations and water use efficiency of maize under nitrogen fertigation for semi-arid environments: Experiment and SynthesisMahdi Gheysari, Henry W. Loescher, Sayed Hossein Sadeghi, Seyed Majid Mirlatifi, Mohammad Javad Zareian and Gerrit HoogenboomGypsum Soils – Their Morphology, Classification, Function, and LandscapesSusan Casby-Horton, Juan Herrero, and Nelson A. RolongWeeds of Direct-Seeded Rice in Asia: Problems and OpportunitiesAmar Matloob, Abdul Khaliq and Bhagirath Singh ChauhanModels, Developments and Perspectives of Mutual Legume IntercroppingAleksandar Mikić, Branko Ćupina, Diego Rubiales, Vojislav Mihailović, Lina Šarūnaitė, Joëlle Fustec, Svetlana Antanasović, Đorđe Krstić, Laurent Bedoussac, Lana Zorić, Vuk Đorđević, Vesna Perić, Mirjana Srebrić