Embodied-Technical Change of Farm Tractors in U.S. Agricultural Productivity Analysis: What Does Hedonic Price Tell Us?
This study employs new data and a hedonic function to estimate the quality-adjusted price and quantity for farm tractors over the 1950-2011 period. The estimated hedonic prices for tractors are lower than the BLS’ tractor price index in most time period. The lower prices will result in a higher estimate of tractor stock and service flow, which reflects an increase in embodied technical change of farm tractors. After replacing the BLS deflator of tractor investment with these hedonic estimates, average annual TFP growth dropped by 0.13 percentage points over the 1991-2011 period compared with the current USDA’s productivity estimate. The changes can be attributed to properly accounting for embodied technical change in farm tractors over this period.
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- Gibbons, M. & Coombs, R. & Saviotti, P. & Stubbs, P. C., 1982. "Innovation and technical change : A case study of the U.K. tractor industry, 1957 1977," Research Policy, Elsevier, vol. 11(5), pages 289-310, October.
- V. Eldon Ball & W. A. Lindamood & Richard Nehring & Carlos San Juan Mesonada, 2008. "Capital as a factor of production in OECD agriculture: measurement and data," Applied Economics, Taylor & Francis Journals, vol. 40(10), pages 1253-1277.
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