Originally published in 1983, this study investigates the threats to crop productivity in the U.S. with a focus on human-made problems. This title will be of interest to students of environmental studies.

Preface; 1. Introduction and Summary 2. The Historical Background 3. Soil Characteristics, Erosion, and Productivity 4. How Much Present Erosion? 5. Effects of Erosion on Productivity 6. Significance of Productivity Loss 7. Technical Responses to Erosion-Induced Productivity Loss 8. Some Policy Issues; Appendix A: 1977 National Resources Inventory; Appendix B: The Erosion Productivity Impact Calculator; Index