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Unpacking the Agricultural Black Box: The Rise and Fall of American Farm Productivity Growth

Published online by Cambridge University Press:  12 March 2021

Philip G. Pardey  and
Julian M. Alston
Philip G. Pardey
Affiliation:
Professor, Department of Applied Economics and director of International Science and Technology Practice and Policy (InSTePP) center, University of Minnesota, 248B Ruttan Hall 1994 Buford Avenue, St. Paul, MN55108. E-mail: ppardey@umn.edu.
Julian M. Alston
Affiliation:
Distinguished Professor, Department of Agricultural and Resource Economics, University of California-Davis, One Shields Avenue, Davis, CA95616. E-mail: jmalston@ucdavis.edu. He is also director of the Robert Mondavi Institute Center for Wine Economics at UC Davis, a member of the Giannini Foundation of Agricultural Economics, and a research fellow at InSTePP.
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Abstract

Has the golden age of U.S. agricultural productivity growth ended? We analyze the detailed patterns of productivity growth spanning a century of profound changes in American agriculture. We document a substantial slowing of U.S. farm productivity growth, following a late mid-century surge—20 years after the surge and slowdown in U.S. industrial productivity growth. We posit and empirically probe three related explanations for this farm productivity surge-slowdown: the time path of agricultural R&D-driven knowledge stocks; a big wave of technological progress associated with great clusters of inventions; and dynamic aspects of the structural transformation of agriculture, largely completed by 1980.

Type
Article
Information
The Journal of Economic History , Volume 81 , Issue 1 , March 2021 , pp. 114 - 155
Copyright
© The Economic History Association 2021

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Footnotes

Both authors contributed equally to this paper. The authors thank Matthew Andersen for his collaboration on prior work, which this paper deepens and extends, and are grateful for the excellent research assistance provided by Connie Chan-Kang, Yuan Chai, Mason Hurley, and Shanchao Wang. Trey Malone, Kevin Novan, Alan Olmstead, Paul Rhode, Scott Swinton, and Felicia Wu provided helpful comments and suggestions, as did other participants at various workshops and conferences, as well as two referees. The work for this project was partly supported by the University of California, the University of Minnesota (MIN-14-161), and the Giannini Foundation of Agricultural Economics.

References

REFERENCES

Alston, Julian M., Andersen, Matthew A., James, Jennifer S., and Pardey, Philip G.. Persistence Pays: U.S. Agricultural Productivity Growth and the Benefits from Public R&D Spending. New York, NY: Springer, 2010.Google Scholar
Alston, Julian M., Andersen, Matthew A., James, Jennifer S., and Pardey, Philip G.. “The Economic Returns to U.S. Public Agricultural Research.” American Journal of Agricultural Economics 93, no. 5 (2011): 1257–77.CrossRefGoogle Scholar
Alston, Julian M., Craig, Barbara J., and Pardey, Philip G.. “Dynamics in the Creation and Depreciation of Knowledge, and the Returns to Research.” EPTD Discussion Paper No. 35, International Food Policy Research Institute, Washington, DC, August 1998.Google Scholar
Alston, Julian M., and Pardey, Philip G.. “Agricultural Productivity.” Essay in Historical Statistics of the United States, Earliest Times to the Present: Millennial Edition, edited by Susan, B. Carter, Scott, S. Gartner, Michael, R. Haines, Alan, L. Olmstead, et al., 4-19–4-27. Cambridge: Cambridge University Press, 2006.Google Scholar
Alston, Julian M., and Pardey, Philip G.. “Agriculture in the Global Economy.” Journal of Economic Perspectives 28, no. 1 (2014): 121–46.CrossRefGoogle Scholar
Alston, Julian M., and Pardey, Philip G.. “Transforming Traditional Agriculture Redux.” In The Oxford Handbook of Structural Transformation, edited by Monga, Célestin and Justin Yifu Lin, ch. 16. Oxford: Oxford University Press, 2019.Google Scholar
Alston, Julian M., and Pardey, Philip G.. “Innovation, Growth and Structural Change in American Agriculture.” NBER Working Paper No. 27206, Cambridge, MA, May 2020.Google Scholar
Alston, Julian M., and Pardey, Philip G.. “Are Ideas Really Getting Harder to Find?” Working Paper, International Science and Technology Practice and Policy Center, University of Minnesota, St. Paul, MN, 2021 (in process).Google Scholar
Andersen, Mathew A. “Procyclical Productivity Patterns in U.S. Agriculture.” Unpublished Ph.D. diss., Department of Agricultural and Resource Economics, University of California, Davis, 2005.Google Scholar
Andersen, Mathew A., Alston, Julian M., and Pardey, Philip G.. “Capital Use Intensity and Productivity Biases.” Journal of Productivity Analysis 37, no. 1 (2012): 59–71.CrossRefGoogle Scholar
Andersen, Mathew A., Alston, Julian M., Pardey, Philip G., and Aaron, Smith. “A Century of U.S. Farm Productivity Growth: A Surge Then a Slowdown.” American Journal of Agricultural Economics 100, no. 4 (2018): 1072–90.Google Scholar
Atack, Jeremy. “On the Use of Geographic Information Systems in Economic History: The American Transportation Revolution Revisited.” Journal of Economic History 72, no. 2 (2013): 313–38.Google Scholar
Bakker, Gerben, Nicholas, Crafts, and Pieter, Woltjer. “The Sources of Growth in a Technologically Progressive Economy: The United States, 1899–1941.” Economic Journal 129 (2019): 2267–94Google Scholar
Ball, Eldon, David, Schimmelpfenning, and Sun, Ling Wang. “Is U.S. Agricultural Productivity Growth Slowing?” Applied Economic Perspectives and Policy 35, no. 3 (2013): 435–50.CrossRefGoogle Scholar
Ball, Eldon, Sun, Ling Wang, and Richard, Nehring. Agricultural Productivity in the United States: Data Documentation and Methods. Washington DC: USDA Economic Research Service, May 2010. Accessed July 2010 from http://www.ers.usda.gov/data/agproductivity/methods.htm.Google Scholar
Barton, Glen T., and Cooper, Martin R.. “Relation of Agricultural Production to Inputs.” Review of Economics and Statistics 30, no. 2 (1948): 117–26.Google Scholar
Barton, Glen T., and Durost, Donald D.. “The New USDA Index of Inputs.” Journal of Farm Economics 42, no. 5 (1960): 1398–410.CrossRefGoogle Scholar
Beall, Robert T. “Rural Electrification.” In USDA 1940 Agricultural Yearbook, 790–809. Washington, DC: United States Department of Agriculture, 1940.Google Scholar
BEA (Bureau of Economic Analysis). “Table 6.8a-6.8d Persons Engaged in Production by Industry (A)” Obtained from National Income and Product Accounts Database. Washington, DC: Bureau of Economic Analysis, 2020a. Downloaded 26 June 2020. Available from https://apps.bea.gov/iTable/index_nipa.cfm.Google Scholar
BEA(Bureau of Economic Analysis).. “Table 1.3.5. Gross Value Added by Sector” Obtained from National Income and Product Accounts Database. Washington, DC: Bureau of Economic Analysis, 2020b. Downloaded 14 February 2020. Available from https://apps.bea.gov/ iTable/index_nipa.cfm.Google Scholar
Bloom, Nicholas, Jones, Charles I., John, Van Reenen, and Michael, Webb. “Are Ideas Getting Harder to Find?” American Economic Review 110, no. 4 (2020): 1104–44.CrossRefGoogle Scholar
BLS (U.S. Commerce Department, Bureau of Labor Statistics). “Historical Multifactor Productivity Measures (SIC 1948–87 linked to NAICS 1987–2019).” Washington, DC: Bureau of Labor Statistics, 2020. Accessed May 2020 from https://www.bls.gov/mfp/mprdload.htm.Google Scholar
Carter, Susan B., and Richard, Sutch. “Self-Employed Persons, Unpaid Family Workers, and Domestic Service Employees by Industry: 1900–1960 [Lebergott].” In Historical Statistics of the United States, Earliest Times to the Present: Millennial Edition, edited by Carter, Susan B., Scott, Sigmund Gartner, Haines, Michael R., Olmstead, Alan L., Richard, Sutch, and Gavin, Wright, table Ba910-921. New York: Cambridge University Press, 2006. http://dx.doi.org/10.1017/ISBN-9780511132971.Ba652-103210.1017/ISBN-9780511132971.Ba652-1032.CrossRefGoogle Scholar
Carson, Rachel. Silent Spring. Boston: Houghton Mifflin, 1962.Google Scholar
Caselli, Francesco, and Wilbur, J. Coleman II. “The U.S. Structural Transformation and Regional Convergence: A Reinterpretation.” Journal of Political Economy 109, no. 3 (2001): 584–616.CrossRefGoogle Scholar
Cochrane, Willard W. Farm Prices: Myth and Reality. Minneapolis: University of Minnesota Press, 1958.Google Scholar
Cochrane, Willard W. The Development of American Agriculture: A Historical Analysis, second edition. Minneapolis: University of Minnesota Press, 1993.Google Scholar
Cooper, Martin R., Barton, Glen T., and Brodell, Albert P.. Progress of Farm Mechanization. Miscellaneous Publication No. 630. Washington, DC: United States Department of Agriculture, 1947.Google Scholar
Dimitri, Carolyn, Anne, Effland, and Neilson, Conklin. The 20th Century Transformation of U.S. Agriculture and Farm Policy. Economic Information Bulletin No. 3. Washington, DC: United States Department of Agriculture, Economic Research Service, 2005.Google Scholar
Dixon, Robert. “Hybrid Corn Revisited.” Econometrica 48, no. 6 (1980): 1451–61.CrossRefGoogle Scholar
Durost, Donald D., and Barton, Glen T.. Changing Sources of Farm Output. Production Research Report No. 36. Washington, DC: United States Department of Agriculture, 1960.Google Scholar
FAO(Food and Agriculture Organization of the United Nations). FAOSTAT. Rome: Food and Agriculture Organization of the United Nations, 2017. Available at http://faostat.fao.org/site/291/default.aspx.Google Scholar
Jorge, Fernandez-Cornejo, Seth, Wechsler, Mike, Livingston, and Lorraine, Mitchell. Genetically Engineered Crops in the United States. USDA Economic Research Report No. 162. Washington, DC: United States Department of Agriculture, 2014.CrossRefGoogle Scholar
Field, Alexander, J. “The Most Technologically Progressive Decade in the Century.” American Economic Review 93, no. 4 (2003): 1399–413.CrossRefGoogle Scholar
Field, Alexander, J. A Great Leap Forward: 1930s Depression and U.S. Economic Growth. New Haven & London: Yale University Press, 2011.Google Scholar
Fischer, Claude S. “Technology’s Retreat: The Decline of Rural Telephony in the United States, 1920–1940.” Social Science History 11, no. 3 (1987): 295–327.Google Scholar
Fischer, R. Anthony, Derek, Byerlee, and Edmeades, Gregory O.. Crop Yields and Global Food Security: Will Yield Increase Continue to Feed the World? Canberra: Australian Centre for International Agricultural Research, ACIAR Monograph No. 158, 2014.Google Scholar
Fogel, Robert W. Railroads and American Economic Growth: Essays in Econometric History. Baltimore, MD: Johns Hopkins Press, 1964.Google Scholar
Gallman, Robert E. “Changes in Total U.S. Agricultural Factor Productivity in the Nineteenth Century.” Agricultural History 46, no. 1 (1972): 191–210.Google Scholar
Gallman, Robert E. “Changing Economic Perspectives on the Farm Problem.” Journal of Economic Literature 30 (1992): 62–101.Google Scholar
Gardner, Bruce L. American Agriculture in the Twentieth Century: How It Flourished and What It Cost. Cambridge: Harvard University Press, 2002.Google Scholar
Geib-Gundersen, Lisa, and Elizabeth, Zahrt. “A New Look at U.S. Agricultural Productivity Growth, 1800–1910.” Journal of Economic History 56, no. 3 (1996): 679–86.CrossRefGoogle Scholar
Gordon, Robert J. “Interpreting the ‘One Big Wave’ in U.S. Long-Term Productivity Growth.” NBER Working Paper No. 7752, Cambridge, MA, June 2000.Google Scholar
Gordon, Robert J. The Rise and Fall of American Growth. Princeton: Princeton University Press, 2016.CrossRefGoogle Scholar
Griliches, Zvi. “Hybrid Corn: An Exploration in the Economics of Technological Change.” Econometrica 25, no. 4 (1957): 501–22.CrossRefGoogle Scholar
Griliches, Zvi. “The Sources of Measured Productivity Growth: United States Agriculture, 1940–60.” Journal of Political Economy 71, no. 4 (1963): 331–46.CrossRefGoogle Scholar
Griliches, Zvi. “Productivity Puzzles and R & D: Another Nonexplanation.” Journal of Economic Perspectives 2, no. 4 (1988): 9–21.CrossRefGoogle Scholar
Haines, Michael, Price, Fishback, and Paul, Rhode. “United States Agriculture Data, 1840–2012.” Ann Arbor, MI: Inter-university Consortium for Political and Social Research, 2018. Accessed on 2018-08-20. doi: doi.org/10.3886/ICPSR35206.v4.Google Scholar
Hallauer, Arnel R., and Miranda Filho, J. B.. Quantitative Genetics in Maize Breeding. Ames: Iowa State University Press, 1981.Google Scholar
Hayami, Yujiro, and Ruttan, Vernon W.. Agricultural Development: An International Perspective. Baltimore: Johns Hopkins University Press, 1971.Google Scholar
Hoppe, Robert A., and MacDonald, James M.. Updating the ERS Farm Typology, EIB-110, U.S. Department of Agriculture, Economic Research Service, April 2013.CrossRefGoogle Scholar
Houthakker, Hendrik. S. Economic History for the Farm Sector. Washington, DC: American Enterprise Institute, 1967.Google Scholar
Huffman, Wallace E., and Robert E., Evenson. Science for Agriculture: A Long-Term Perspective. Ames: Iowa State University Press, 1993.Google Scholar
Huffman, Wallace E. Science for Agriculture: A Long-Term Perspective, second edition. Ames: Blackwell Publishing, 2006.CrossRefGoogle Scholar
Johnson, Glenn L. The Overproduction Trap in Agriculture. Baltimore, MD: Johns Hopkins University Press, 1972.Google Scholar
Johnson, Sherman. Changes in American Farming. USDA Miscellaneous Publication No. 707, Washington, DC: United States Department of Agriculture, Bureau of Agricultural Economics, December 1949.Google Scholar
Johnston, Louis, and Williamson, Samuel H.. “What Was the U.S. GDP Then?” Measuring Worth, 2020. Downloaded 6 February 2020. Available at https://www.measuringworth.com/datasets/usgdp/.Google Scholar
Jorgenson, Dale W., and Gollop, Frank M.. “Productivity Growth in U.S. Agriculture: A Postwar Perspective.” American Journal of Agricultural Economics 74, no. 3 (1992): 745–50.CrossRefGoogle Scholar
Jorgenson, Dale W., Gollop, Frank M., and Barbara, Fraumeni. Productivity and U.S. Economic Growth. Amsterdam: North Holland, 1987.Google Scholar
Jorgenson, Dale W., and Zvi, Griliches. “The Explanation of Productivity Change.” Review of Economic Studies 34, no. 3 (1967): 249–83.CrossRefGoogle Scholar
Kendrick, John W. “Productivity Trends in Agriculture and Industry.” Journal of Farm Economics 40, no. 5 (1958): 1554–64.CrossRefGoogle Scholar
Kendrick, John W. Productivity Trends in the United States. Princeton: Princeton University Press, 1961.Google Scholar
Kendrick, John W. (assisted by Maude R. Pech). Postwar Productivity Trends in the United States, 1948–1969. New York: Colombia University Press for National Bureau of Economic Research, 1973. Available at http://www.nber.org/books/kend73-1.Google Scholar
Kendrick, John W., and Carl E., Jones. “Gross National Farm Product in Constant Dollars, 1910–50.” Survey of Current Business. Washington, DC: Department of Commerce, 1951.Google Scholar
Kilby, Emily R. “The Demographics of the U.S. Equine Population.” In The State of the Animals 2007, edited by Deborah, J. Salem and Andrew, N. Rowan, ch. 10. Washington, DC: Humane Society Press, 2007.Google Scholar
Kislev, Yoav, and Willis, Peterson. “Prices, Technology and Farm Size.” Journal of Political Economy 90 (1982): 578–95.CrossRefGoogle Scholar
Kislev, Yoav. “Economies of Scale in Agriculture: A Reexamination of the Evidence.” In Papers in Honor of D. Gale Johnson, Volume 2, edited by John, M. Antle and Daniel, A. Sumner, ch. 10. Chicago: University of Chicago Press, 1996.Google Scholar
Kuznets, Simon S. “The Role of Agriculture in Economic Development.” International Journal of Agrarian Affairs 3, no. 2 (1961): 56–75.Google Scholar
Kuznets, Simon S. Modern Economic Growth: Rate, Structure, and Speed. New Haven, CT: Yale University Press, 1966.Google Scholar
Kuznets, Simon S., Miller, Ann R., and Easterlin, Richard A.. Analyses of Economic Change. Vol. 2 of Population Redistribution and Economic Growth, United States, 1970–1950. Philadelphia, PA: American Philosophical Society, 1960.Google Scholar
Lee, Kyuseon, Pardey, Philip G., and Steve, Miller. “An Examination of U.S. Sectoral and Firm-level Investments in Food and Agricultural R&D, 1950–2017.” InSTePP Working Paper, International Science and Technology Practice and Policy Center, University of Minnesota, St. Paul, MN, 2021 (in process).Google Scholar
Loomis, Ralph A., and Barton, Glen T.. Productivity of Agriculture: United States, 1870–1958. Technical Bulletin No. 1238. Washington, DC: United States Department of Agriculture, 1961.Google Scholar
MacDonald, James M. “Tracking the Consolidation of U.S. Agriculture.” Applied Economic Perspectives and Policy, 2020, doi.org/10.1002/aepp.13056. Accessed 25 August 2020.Google Scholar
MacDonald, James M., Hoppe, Robert A., and Doris, Newton. Three Decades of Consolidation in U.S. Agriculture. EIB-189, U.S. Department of Agriculture, Economic Research Service, March 2018.Google Scholar
Nordhaus, William D., Barry, Bosworth, Robert, Solow, and Vaccara, Beatrice N.. “The Recent Productivity Slowdown.” Brookings Papers on Economic Activity 1972, no. 3 (1972): 493–545.CrossRefGoogle Scholar
Olmstead, Alan L., and Rhode, Paul W.. “The Transformation of Northern Agriculture from 1910 to 1990.” In Cambridge Economic History of the United States, Volume III, The Twentieth Century, edited by Stanley, L. Engerman and Robert, E. Gallman, 693–742. New York: Cambridge University Press, 2000.CrossRefGoogle Scholar
Olmstead, Alan L., and Rhode, Paul W.. “Reshaping the Landscape: The Impact and Diffusion of the Tractor in American Agriculture, 1910–1960.” Journal of Economic History 61, no. 3 (2001): 663–98.CrossRefGoogle Scholar
Olmstead, Alan L., and Rhode, Paul W.. “The Red Queen and the Hard Reds: Productivity Growth in American Wheat, 1800–1940.” Journal of Economic History 62, no. 4 (2002): 929–66.Google Scholar
Olmstead, Alan L., and Rhode, Paul W.. “Farms – Number, Population, Land, and Value of Property: 1850–1997 [Census years].” In Historical Statistics of the United States, Earliest Times to the Present: Millennial Edition, edited by Susan, B. Carter, Scott Sigmund Gartner, Michael R. Haines, Alan L. Olmstead, Richard Sutch, and Gavin Wright, table Da19. New York: Cambridge University Press, 2006a.Google Scholar
Olmstead, Alan L., and Rhode, Paul W.. “Farms—Number, Population, Land, and Value of Property: 1910–1999 [Annual].” In Historical Statistics of the United States, Earliest Times to the Present: Millennial Edition, edited by Susan, B. Carter, Scott Sigmund Gartner, Michael R. Haines, Alan L. Olmstead, et al., table Da 6. Cambridge: Cambridge University Press, 2006b.Google Scholar
Olmstead, Alan L., and Rhode, Paul W.. “Farms—Number, Population, Land, and Value of Property: 1910–1999 [Annual].” In Historical Statistics of the United States, Earliest Times to the Present: Millennial Edition, edited by Susan, B. Carter, Scott Sigmund Gartner, Michael R. Haines, Alan L. Olmstead, et al., tables Da 4 and Da 5. Cambridge: Cambridge University Press, 2006c.Google Scholar
Olmstead, Alan L., and Rhode, Paul W.. Creating Abundance: Biological Innovation and American Agricultural Development. New York: Cambridge University Press, 2008.Google Scholar
Olmstead, Alan L., and Sumner, Daniel A.. “Farm Policy.” Essay in Historical Statistics of the United States, Earliest Times to the Present: Millennial Edition, edited by Susan, B. Carter, Scott Sigmund Gartner, Michael R. Haines, Alan L. Olmstead, et al., 4-31–4-38. Cambridge: Cambridge University Press, 2006.Google Scholar
Pardey, Philip G., and Alston, Julian M.. “Replication: Unpacking the Agricultural Black Box: The Rise and Fall of American Farm Productivity Growth.” Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2021-01-09. https://doi.org/10.3886/E130481V1.CrossRefGoogle Scholar
Pardey, Philip G., Alston, Julian M., and Connie, Chan-Kang. Public Food and Agricultural Research in the United States: The Rise and Decline of Public Investments, and Policies for Renewal. AGree Report. Washington DC: AGree, 2013.Google Scholar
Pardey, Philip G., Andersen, Matthew A., Craig, Barbara J., and Alston, Julian M.. Primary Data Documentation U.S. Agricultural Input, Output, and Productivity Series, 1949–2002 (Version 4). InSTePP Data Documentation. St. Paul, MN: International Science and Technology Practice and Policy Center, University of Minnesota, 2009.Google Scholar
Olmstead, Alan L., and Rhode, Paul W.. “InSTePP United States Production Accounts, Version 5.” St. Paul, MN: International Science and Technology Practice and Policy, 2014. Available from www.instepp.umn.edu/united-states#Version%205.Google Scholar
Pardey, Philip G., and Beddow, Jason M.. Agricultural Innovation: The United States in a Changing Global Reality. CCGA Report. Chicago: Chicago Council on Global Affairs, 2013.Google Scholar
Pardey, Philip G., Beddow, Jason M., Hurley, Terrance M., et al. “A Bounds Analysis of World Food Futures: Global Agriculture Through to 2050.” Australian Journal of Agricultural and Resource Economics 58, no. 4 (2014): 571–89.CrossRefGoogle Scholar
Peterson, Willis L. “Return to Poultry Research in the United States.” Journal of Farm Economics 49, no. 3 (1967): 656–69.CrossRefGoogle Scholar
Rao, Xudong, Hurley, Terrance M., and Pardey, Philip G.. “Are Agricultural R&D Returns Declining and Development Dependent?” World Development 122 (2019): 27–37.CrossRefGoogle Scholar
Rasmussen, Wayne, D. “The Impact of Technological Change on American Agriculture, 1862–1962.” Journal of Economic History 22, no. 4 (1962): 578–91.CrossRefGoogle Scholar
Ruttan, Vernon W. Agricultural Research Policy. Minneapolis: University of Minnesota Press, 1982.Google Scholar
Saitone, Tina L., Sexton, Richard J., and Sumner, Danial A.. “What Happens When Food Marketers Require Restrictive Farming Practices?” American Journal of Agricultural Economics 97, no. 4 (2015): 1021–43.Google Scholar
Schultz, Theodore W. “Reflections on Agricultural Production Output and Supply.” Journal of Farm Economics 38, no. 3 (1956): 748–62.Google Scholar
Smith, Maryanna S. Chronological Landmarks in American Agriculture. Agricultural Information Bulletin No 425. Washington, DC: United States Department of Agriculture, Economics, Statistics, and Cooperatives Service, 1979.Google Scholar
Solow, Robert M. “Technical Change and the Aggregate Production Function.” American Economic Review 39, no. 3 (1957): 312–20.Google Scholar
Strauss, Frederick, and Bean, Louis H.. Gross Farm Income and Indices of Farm Production and Prices in the United States, 1869–1937. USDA Technical Bulletin No. 703. Washington, DC: United States Department of Agriculture, 1940.Google Scholar
Sutch, Richard. “Self-Employed Persons, Unpaid Family Workers, and Private Household Employees, by Industry: 1948–1999 [Current Population Survey].” In Historical Statistics of the United States, Earliest Times to the Present: Millennial Edition, edited by Susan B. Carter, Scott Sigmund Gartner, Michael R. Haines, Alan L. Olmstead, Richard Sutch, and Gavin Wright, table Ba922-933. New York: Cambridge University Press, 2006.Google Scholar
Sumner, Daniel A., Alston, Julian M., and Glauber, Joseph W.. “Evolution of the Economics of Agricultural Policy.” American Journal of Agricultural Economics 92, no. 2 (2010): 403–23.CrossRefGoogle Scholar
United Nations Statistics Division. UN National Accounts Main Aggregates Database. New York: United Nations, 2020. Accessed 4 February 2020 from http://unstats.un.org/unsd/snaama/introduction.asp.Google Scholar
U.S. Bureau of the Census. “Historical Statistics of the United States, 1789–1957-Chapter A Wealth and Income, Series A 154-164: National Income.” U.S. Department of Commerce. Washington, DC: GPO, 1949. Downloaded 14 February 2017 from http://www.census.gov/library/publications/1949/compendia/hist_stats_1789-1945.html.Google Scholar
U.S. Bureau of the Census. “Historical Statistics of the United States: Colonial Times to 1970.” U.S. Department of Commerce. Washington, DC: GPO, 1975.Google Scholar
U.S. Bureau of the Census. “1969 United States Census of Agriculture. General Information: Procedures for Collection, Processing, Classification. Volume II General Report. April 1973. Washington, DC: Government Printing Office.Google Scholar
U.S. Bureau of the Census. “1974 Census of Agriculture – United States Summary and State Data, Volume I Part 51.” U.S. Department of Commerce. Washington, DC: GPO, 1977.Google Scholar
U.S. Bureau of the Census. “Census of the United States: Agriculture.” U.S. Department of Commerce. Washington, DC: GPO, various years.Google Scholar
USDA (United States Department of Agriculture). “States by Census Region and Division.” Washington, DC: USDA, Economic Research Service, 2019. Downloaded from www.ars.usda.gov/northeast-area/beltsville-md-bhnrc/beltsville-human-nutrition-research-center/docs/regions.Google Scholar
USDA-ERS (United States Department of Agriculture, Economic Research Service). Economic Indicators of the Farm Sector: Production and Efficiency Statistics, 1981. ECIFS 1-3, Washington, DC: USDA, Economic Research Service, 1983.Google Scholar
USDA-NASS (United States Department of Agriculture, National Agricultural Statistical Service). “Farms and Land in Farms.” Washington, DC: USDA-NASS Agricultural Statistical Boards, February 1999. Downloaded from https://downloads.usda.library.cornell.edu/usda-esmis/files/5712m6524/gh93h204z/n870zt29p/FarmLandIn-02-26-1999.pdf.Google Scholar
USDA-NASS (United States Department of Agriculture, National Agricultural Statistical Service). “Farms and Land in Farms 2013 Summary.” Washington, DC: USDA-NASS, May 2014a. Downloaded from https://downloads.usda.library.cornell.edu/usda-esmis/files/5712m6524/fq977x84m/6m311r61b/FarmLandIn-05-28-2014.pdf.Google Scholar
USDA-NASS (United States Department of Agriculture, National Agricultural Statistical Service). “2012 Census of Agriculture. United States Summary and State Data. Volume 1 Geographic Area Series Part 51 AC-12-A-51. Washington, DC: United States Department of Agriculture, May 2014b. Available at https://www.nass.usda.gov/ Publications/AgCensus/2012/Full_Report/Volume_1,_Chapter_1_US/.Google Scholar
USDA-NASS (United States Department of Agriculture, National Agricultural Statistical Service). “Farm Operations” Obtained from Quick Stats 2.0 Database. Washington, DC: United States Department of Agriculture, 2019. Downloaded 9 January 2019. Available from http://quickstats.nass.usda.gov/.Google Scholar
USDA-NASS (United States Department of Agriculture, National Agricultural Statistical Service). Census of Agriculture. Washington, DC: United States Department of Agriculture, various years.Google Scholar
Wang, Sun Ling. “Is U.S. Agricultural Productivity Growth Slowing?” Amber Waves 8, no. 3 (2010): 6. Available at www.ers.usda.gov/Amberwaves/.Google Scholar
Wang, Sun Ling, Paul, Heisey, David, Schimmelpfennig, and Eldon, Ball. Agricultural Productivity Growth in the United States: Measurement, Trends, and Drivers, ERR-189, U.S. Department of Agriculture, Economic Research Service, July 2015a.Google Scholar
Wang, Sun Ling, Paul, Heisey, David, Schimmelpfennig, and Eldon, Ball. “U.S. Agricultural Productivity Growth: The Past, Challenges, and the Future.” Amber Waves Feature, September 2015b.Google Scholar
Weiss, Thomas. “Long-Term Changes in US Agricultural Output Per Worker, 1800–1900.” Economic History Review 46, no. 2 (1993): 324–41.Google Scholar
Wright, Brian D., and Pardey, Philip G.. “The Evolving Rights to Intellectual Property Protection in the Agricultural Biosciences.” International Journal for Technology and Globalization 2, no. 1/2 (2006): 12–29.CrossRefGoogle Scholar