Alan L. Olmstead is Director of the Institute of Governmental Affairs, Professor of Economics, and member of the Giannini Foundation of Agricultural Economics at the University of California, Davis. He is one of the six editors-in-chief of Historical Statistics of the United States: Millennial Edition (2006), and his writings appear regularly in the leading economics and history journals. Paul W. Rhode is McClelland Professor of Economics at the University of Arizona and Research Associate at the National Bureau of Economic Research. He is co-editor (with Gianni Toniolo) of The Global Economy in the 1990s: A Long-Run Perspective (2006). He is a frequent contributor to prominent economics and history journals.

'This is an important book! It traces the stream of biological innovation that over a period of two centuries has transformed the technical landscape of American agriculture. It demonstrates that biological innovations were essential for the movement of agriculture to new lands with more extreme climates, for maintaining and enhancing productivity in the face of evolving threats from pests, soil degradation and depletion, for creating modern livestock breeds, for enhancing feed efficiency, and for protecting animal and human health. It will be the standard against which the next generation of research in the history of agricultural technology will be evaluated.' Vernon W. Ruttan, University of Minnesota

• 1. Introduction; 2. The red queen and the hard reds: productivity growth in American wheat, 1800–1940; 3. Corn: America's crop; 4. Cotton: variety innovation and the making of king cotton; 5. Weevils, worms, and wilts: the red queen's cotton playground; 6. The other revolution in the cotton economy: cotton's revival in the twentieth century; 7. That 'stinking weed of America': the evolution of tobacco production; 8. California: creating a cornucopia; 9. Livestock in the farm economy; 10. Defining and redesigning America's livestock; 11. Nature's perfect food: inventing the modern dairy industry; 12. Draft power; 13. Conclusion: tying it together.

Alan L. Olmstead is Director of the Institute of Governmental Affairs, Professor of Economics, and member of the Giannini Foundation of Agricultural Economics at the University of California, Davis. He is one of the six editors-in-chief of Historical Statistics of the United States: Millennial Edition (2006), and his writings appear regularly in the leading economics and history journals. Paul W. Rhode is McClelland Professor of Economics at the University of Arizona and Research Associate at the National Bureau of Economic Research. He is co-editor (with Gianni Toniolo) of The Global Economy in the 1990s: A Long-Run Perspective (2006). He is a frequent contributor to prominent economics and history journals.

'This is an important book! It traces the stream of biological innovation that over a period of two centuries has transformed the technical landscape of American agriculture. It demonstrates that biological innovations were essential for the movement of agriculture to new lands with more extreme climates, for maintaining and enhancing productivity in the face of evolving threats from pests, soil degradation and depletion, for creating modern livestock breeds, for enhancing feed efficiency, and for protecting animal and human health. It will be the standard against which the next generation of research in the history of agricultural technology will be evaluated.' Vernon W. Ruttan, University of Minnesota

• 1. Introduction; 2. The red queen and the hard reds: productivity growth in American wheat, 1800–1940; 3. Corn: America's crop; 4. Cotton: variety innovation and the making of king cotton; 5. Weevils, worms, and wilts: the red queen's cotton playground; 6. The other revolution in the cotton economy: cotton's revival in the twentieth century; 7. That 'stinking weed of America': the evolution of tobacco production; 8. California: creating a cornucopia; 9. Livestock in the farm economy; 10. Defining and redesigning America's livestock; 11. Nature's perfect food: inventing the modern dairy industry; 12. Draft power; 13. Conclusion: tying it together.

Alan L. Olmstead is Director of the Institute of Governmental Affairs, Professor of Economics, and member of the Giannini Foundation of Agricultural Economics at the University of California, Davis. He is one of the six editors-in-chief of Historical Statistics of the United States: Millennial Edition (2006), and his writings appear regularly in the leading economics and history journals. Paul W. Rhode is McClelland Professor of Economics at the University of Arizona and Research Associate at the National Bureau of Economic Research. He is co-editor (with Gianni Toniolo) of The Global Economy in the 1990s: A Long-Run Perspective (2006). He is a frequent contributor to prominent economics and history journals.

'This is an important book! It traces the stream of biological innovation that over a period of two centuries has transformed the technical landscape of American agriculture. It demonstrates that biological innovations were essential for the movement of agriculture to new lands with more extreme climates, for maintaining and enhancing productivity in the face of evolving threats from pests, soil degradation and depletion, for creating modern livestock breeds, for enhancing feed efficiency, and for protecting animal and human health. It will be the standard against which the next generation of research in the history of agricultural technology will be evaluated.' Vernon W. Ruttan, University of Minnesota

• 1. Introduction; 2. The red queen and the hard reds: productivity growth in American wheat, 1800–1940; 3. Corn: America's crop; 4. Cotton: variety innovation and the making of king cotton; 5. Weevils, worms, and wilts: the red queen's cotton playground; 6. The other revolution in the cotton economy: cotton's revival in the twentieth century; 7. That 'stinking weed of America': the evolution of tobacco production; 8. California: creating a cornucopia; 9. Livestock in the farm economy; 10. Defining and redesigning America's livestock; 11. Nature's perfect food: inventing the modern dairy industry; 12. Draft power; 13. Conclusion: tying it together.