Advances in agronomy. Volume 91 by Sparks, Donald L., 1953- instant download

Advances in agronomy. Volume 91 by Sparks, Donald L., 1953- instant download

1 online resource (xiii, 483 pages), Volume 91 contains four indespensable reviews and over 30 descriptive figures. * Maintains the highest impact factor among serial publications in Agriculture * Presents timely reviews on important agronomy issues * Enjoys a long-standing reputation for excellence in the field, Includes bibliographical references and index, Print version record, Front Cover; Advances in Agronomy; Copyright Page; Contents; Contributors; Preface; Chapter 1: Geochemical Aspects of Phytosiderophore-Promoted Iron Acquisition by Plants; Abbreviation; I. Introduction; II. Strategies of Plant Iron Acquisition; A. Strategy I; B. Strategy II; III. How Much Is Enough? Plant Iron Requirements; IV. Iron-Bearing Minerals and Soluble Iron Species in the Rhizosphere; A. Iron-Bearing Minerals, the Penultimate Iron Source; B. Iron Complexation by Organic Ligands; C. Iron Complexes with Low-Molecular Weight Organic Acids; D. Microbial Siderophore Complexes, E. Natural Organic MatterV. The Chemistry of Phytosiderophores in the Rhizosphere; A. Structure of Phytosiderophores; B. Concentrations of Phytosiderophores in the Rhizosphere; C. Speciation of Phytosiderophores and Iron in Solution; D. Effect of Phytosiderophores on Iron Solubility; E. Adsorption of Phytosiderophores on Iron Oxides; VI. Geochemical Aspects of Iron Shuttling; A. Effect of Organic Ligands on Iron Oxide Dissolution Rates; B. Thermodynamics and Kinetics of Ligand-Exchange Reactions with Phytosiderophores as Receiving Ligands; VII. Conclusions and Outlook; References, Chapter 2: Taking Stock of the Brazilian \"\"Zero-Till Revolution\"\": A Review of Landmark Research and Farmers' PracticeI. Introduction; II. Historical Background; A. Zero-Till Development in Subtropical Southern Brazil; B. Zero-Till Development in Tropical Brazil; C. Development of Smallholder Zero-Till Systems; III. Individual Issues, Innovations, and Challenges; A. Permanent Soil Surface Cover; B. Cover Crops, and Crop Rotations…