D.G. Schulze and P.M. Bertsch, Synchrotron X-Ray Techniques in Soil, Plant, and Environmental Research. G.W. Petersen, J.C. Bell, K. McSweeney, G.A. Nielsen, and P.C. Robert, Geographic Information Systems in Agronomy. USDA Plant Genome Research Program Participants, USDA Plant Genome Research Program. M. Schnitzer and H.-R. Schulten, Analysis of Organic Matter in Soil Extracts and Whole Soils by Pyrolysis-Mass Spectrometry. R.D. Harter and R. Naidu, Role of Metal-Organic Complexation in Metal Sorption by Soils. M. Lee, DNA Markers and Plant Breeding Programs. A.J. Beck, R.E. Alcock, S.C. Wilson, M.-J. Wang, S.R. Wild, A.P. Sewart, and K.C. Jones, Long-Term Persistence of Organic Chemicals in Sewage Sludge-Amended Agricultural Land: A Soil Quality Perspective. D.A. Knauft and J.C. Wynne, Peanut Breeding and Genetics. References. Subject Index.