Advances in agronomy. V.99 /

Contributors p. ix
Preface p. xi
1 Influence of Coupled Processes on Contaminant Fate and Transport in Subsurface Environments Philip M. Jardine p. 1
1 Introduction and Rationale p. 2
2 Chapter Objectives and Outline p. 3
3 General Overview on the Impact of Coupled Processes on Subsurface Fate and Transport p. 4
4 Influence of Coupled Processes on Inorganic Contaminant Fate and Transport p. 10
5 Influence of Coupled Processes on Organic Contaminant Fate and Transport p. 48
6 Concluding Remarks p. 70
Acknowledgments p. 73
References p. 73
2 Uptake and Fate of Perchlorate in Higher Plants Angelia L. Seyfferth and David R. Parker p. 101
1 Introduction p. 102
2 Perchlorate Levels in Plants p. 106
3 Perchlorate Uptake Studies p. 110
4 Conclusions and Future Research p. 120
References p. 120
3 Sugarcane for Bioethanol: Soil and Environmental Issues Alfred E. Hartemink p. 125
1 Introduction p. 126
2 Changes in Soil Chemical Properties p. 128
3 Changes in Soil Physical Properties p. 147
4 Changes in Soil Biological Properties p. 151
5 Environmental Issues p. 154
6 Discussion and Conclusions p. 161
Acknowledgments p. 170
References p. 170
4 Iron Dynamics in the Rhizosphere: Consequences for Plant Health and Nutrition A. Robin and G. Vansuyt and P. Hinsinger and J. M. Meyer and J. F. Briat and P. Lemanceau p. 183
1 Introduction p. 184
2 Iron Status in Soils and Rhizospheres p. 187
3 Impact of Plants and Microorganisms on the Iron Status p. 194
4 Iron-Mediated Interactions in the Rhizosphere p. 203
5 Conclusions p. 209
Acknowledgments p. 211
References p. 211
5 Geochemistry of Green Rusts and Fougerite: A Reevaluation of Fe cycle in Soils Fabienne Trolard and Guilhem Bourrie p. 227
1 Introduction p. 228
2 Iron as the Main Biogeochemical Marker of Gleyey Soils p. 229
3 Methods for Study of Redox State of Iron in Soil Solutions p. 237
4 Methods for Study of Redox State of Iron in Soil Solids p. 239
5 Field Evidence of Fe[superscript 2+] Mobility in Solution and Seasonal Dynamics p. 242
6 Structure of Synthetic Green Rusts p. 246
7 Structure of Fougerite Mineral p. 252
8 Direct Identification of Fougerite Mineral by Decomposition of XRD Spectra and Nature of the Interlayer Anion in Fougeres-Fougerite p. 253
9 Thermodynamic Modeling p. 261
10 Fe Control in Solution by Mixed Fe(II)-Fe(III) Minerals/Solution Equilibria p. 269
11 Redox Interactions Between Iron and Other Elements in Relationship with the Occurrence of GRs p. 271
12 Biotic Interaction p. 279
13 Geochemical Significance and Place of Fougerite in Iron Oxide Family p. 280
References p. 281
6 Advances in Isotopic Dilution Techniques in Trace Element Research: A Review of Methodologies, Benefits, and Limitations Rebecca E. Hamon and David R. Parker and Enzo Lombi p. 289
1 Introduction p. 290
2 The Isotopic Dilution Principle p. 293
3 Methodologies p. 306
4 Uncertainties and Sources of Errors p. 314
5 Interpretation of E-Values p. 325
6 Interpretation of L-Values p. 327
7 Future Applications p. 335
Acknowledgments p. 336
References p. 337
7 Ameliorating Soil Acidity of Tropical Oxisols by Liming For Sustainable Crop Production N. K. Fageria and V. C. Baligar p. 345
1 Introduction p. 346
2 Distribution and Characteristics of Oxisols p. 350
3 Beneficial Effects of Liming p. 352
4 Disadvantages of Overliming p. 363
5 Factors Affecting Lime Requirements p. 364
6 Criteria to Determine Liming Material Quantity p. 375
7 Methods, Frequency, Depth, and Timing of Lime Application p. 384
8 Conclusions p. 386
Acknowledgment p. 388
References p. 389
Index p. 401