| Foreword by Norman Borlaug | 8 |
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| Acknowledgments | 12 |
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| Contents | 15 |
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| Tables | 18 |
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| Figures | 23 |
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| Boxes | 27 |
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| Part I Context | 28 |
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| 1 Introduction | 29 |
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| 2 A Brief History of U.S. Agriculture | 35 |
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| 2.1 Trends in Agricultural Output | 35 |
| Geography of U.S. Production | 36 |
| Input versus Output Trends | 39 |
| 2.2 Farms and Farmers | 42 |
| 2.3 Conclusion | 47 |
| Part II Inputs, Outputs and Productivity | 48 |
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| 3 Agricultural Inputs | 49 |
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| 3.1 Overview | 49 |
| General Developments | 49 |
| More Detailed Developments | 52 |
| 3.2 The Composition of Capital | 57 |
| 3.3 The Composition of Labor | 63 |
| 3.4 The Composition of Land | 68 |
| 3.5 Other Inputs | 70 |
| Materials | 70 |
| Biological Inputs | 73 |
| Natural Inputs | 74 |
| 3.6 Factor Proportions, Relative Prices and Cost Shares | 74 |
| 3.7 Conclusion | 78 |
| 4 Agricultural Outputs | 81 |
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| 4.1 Value, Composition and Location of Production | 81 |
| Longer-Term Trends | 81 |
| Composition and Value of Agricultural Production, 1949–2006 | 82 |
| The Changing Location of Production | 86 |
| Specialization of States in Agricultural Production | 89 |
| 4.2 Indexes of the Quantity and Price of Output | 93 |
| Trends over Space and Time | 93 |
| 4.3 Conclusion | 98 |
| 5 Agricultural Productivity Patterns | 110 |
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| 5.1 Partial Factor Productivity Measures | 111 |
| Crop Yields | 112 |
| Livestock “Yields” | 114 |
| Land, Labor, Capital, and Materials Productivity | 115 |
| Labor Requirements | 122 |
| 5.2 Multi-Factor Productivity Measures | 123 |
| Earlier Productivity Evidence for the United States | 124 |
| InSTePP Estimates | 128 |
| 5.3 A Systematic Slowdown in Productivity Growth? | 133 |
| Crop Yields | 137 |
| Other Partial- and Multi-Factor Productivity Measures | 137 |
| 5.4 Conclusion | 143 |
| APPENDIX II | 150 |
| The InSTePP Production Accounts | 150 |
| Variable Description | 151 |
| Aggregating Inputs and Outputs | 152 |
| Major Sources of Data | 154 |
| Satellite InSTePP Value-of-Production Accounts | 156 |
| Part III Agricultural R | 156 |
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| 157 | 156 |
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| 6 Research Funding and Performance | 158 |
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| 6.1 Overall Spending on the Sciences | 158 |
| International Developments | 159 |
| Domestic R | 159 |
| 160 | 159 |
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| 6.2 Global Agricultural R | 159 |
| 164 | 159 |
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| Private Agricultural R | 159 |
| 167 | 159 |
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| 6.3 U.S. Public and Private Agricultural Research | 168 |
| U.S. Private Agricultural Research Spending | 168 |
| U.S. Public Agricultural Research Spending | 170 |
| 6.4 Trends in U.S. Public Agricultural Research and Extension Spending | 172 |
| Commodity Orientation | 175 |
| Productivity Orientation | 177 |
| Extension Trends | 180 |
| Research Personnel | 181 |
| 6.5 Intensity of Investment | 182 |
| Variation in Intensities Among States | 183 |
| Commodity Congruence | 187 |
| Spatial Patterns | 189 |
| 6.6 Sources and Forms of Funding | 192 |
| Research | 192 |
| Extension | 195 |
| 6.7 Conclusion | 196 |
| 7 The Federal Role | 207 |
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| 7.1 Enhanced Incentives to Innovate | 208 |
| Intellectual Property Rights | 209 |
| Expanding Scope of Intellectual Property Rights | 210 |
| Trends in Plant-Related Intellectual Property Rights | 211 |
| 7.2 Organized Agricultural Research and Extension | 213 |
| The First 100 Years | 214 |
| More-Recent Legislation | 215 |
| 7.3 Forms of Federal Funding | 218 |
| Formula and Other Block-Funding Instruments | 219 |
| Competitive Grants | 220 |
| Earmarked Funds | 225 |
| Trends in Funding Forms | 226 |
| 7.4 Conclusion | 230 |
| APPENDIX III | 249 |
| U.S. Public Agricultural Researchand Extension Series | 249 |
| State Agricultural Experiment Stations (SAESs) | 249 |
| Total Expenditures | 249 |
| Minnesota and Vermont Corrections | 251 |
| Scope of Included Research | 252 |
| RPA (Research Problem Area) and Commodity Focus | 254 |
| Intramural USDA Research | 254 |
| Extension Expenditures | 255 |
| Research Deflator | 256 |
| Part IV Models of R | 256 |
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| 257 | 256 |
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| 8 Research Lags and Spillovers | 258 |
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| 8.1 R | 258 |
| 259 | 258 |
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| 8.2 Stylized Facts about R | 258 |
| 263 | 258 |
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| 8.3 Evidence on Research-Innovation-Adoption Lags | 267 |
| Wheat | 267 |
| Hybrid Corn | 270 |
| Biotech Corn | 273 |
| Uptake of Other Innovations by U.S. Agriculture | 275 |
| 8.4 Spatial Aspects of the R | 275 |
| 278 | 275 |
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| Previous Work on Agricultural Technology Spillovers | 278 |
| 8.5 Conclusion | 281 |
| Appendix 8-1 Models of Industrial R | 281 |
| 284 | 281 |
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| R | 281 |
| R | 281 |
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| 284 | 281 |
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| Spillovers in Models of Industrial R | 281 |
| 286 | 281 |
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| 9 Models of Research and Productivity | 289 |
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| 9.1 Modeling Productivity and Knowledge Stocks | 289 |
| 9.2 Specification of R | 289 |
| 293 | 289 |
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| Gamma Lag Distribution | 294 |
| Trapezoidal Lag Distribution | 295 |
| Influence of Lag Specification on Knowledge Stocks | 300 |
| 9.3 Spillover Coefficients and Knowledge Stocks | 302 |
| A Measure of Spillover Potential Based on Output Mix | 303 |
| Estimates of Spillover Coefficients | 304 |
| Federal-State Spillover Coefficients—Spatial Patterns and Trends | 308 |
| State-to-State
|