J.W. Doran, M. Sarrantonio, and M.A. Liebig, Soil Health and Sustainability. S.D. Cunningham, T.A. Anderson, A.P. Schwab, and F.C. Hsu, Phytoremediation of Soils Contaminated with Organic Pollutants. D.O. TeBeest, Biological Control of Weeds with Plant Pathogens and Microbial Pesticides. F. Iyamuremye and R.P. Dick, Organic Amendments and Phosphorus Sorption by Soils. J.S. Boyer, Advances in Drought Tolerance in Plants. N.W. Widstrom, The Aflatoxin Problem with Corn Grain. Chapter References. Subject Index.