Comparisons of Capital Input in OECD Agriculture, 1973-2011 (original) (raw)

This paper provides a farm sector comparison of relative levels of capital input for 17 OECD countries for the period 1973-2011, with an explicit distinction between land and depreciable assets. Methodologically, we adopt the constant efficiency model to derive capital services from capital stocks and construct the purchasing power parity between countries for crosscountry comparison. Our estimates show that, after accounting for cyclical fluctuation in the relative price of capital inputs, fifteen of the sixteen countries in the comparison had higher levels of capital input relative to the United States in 2011 than at the beginning of the sample period in 1973. Moreover, our analysis shows that increases in relative capital use on farms in OECD countries were accompanied by change in the structure of the capital input, away from land and towards depreciable capital items.

Capital Input in OECD Agriculture: A Multilateral Comparison

2014

Abstract: This paper provides a farm sector comparison of levels of capital input for fourteen OECD countries for the period 1973-2002. The starting point for construction of a measure of capital input is the measurement of capital stock. Estimates of depreciable capital are derived by representing capital stock at each point of time as a weighted sum of past investments. The weights correspond to the relative efficiencies of capital goods of different ages, so that the weighted components of capital stock have the same efficiency. Estimates of the stock of land are derived from balance sheet data. We convert estimates of capital stock into estimates of capital service flows by means of capital rental prices. Comparisons of levels of capital input among countries require data on relative prices of capital input. We obtain relative price levels for capital input via relative investment goods prices, taking into account the flow of capital input per unit of capital stock in each country.

Capital Obsolescence and Agricultural Productivity*

The Quarterly Journal of Economics, 2020

This article argues that accounting for capital-embodied technology greatly increases the importance of capital in explaining cross-country differences in agricultural labor productivity. To do so, we draw on a novel data set of agricultural capital prices. We document that new capital is more expensive in richer countries, both in absolute terms and relative to old capital. A model of endogenous adoption of capital of different quality links these price differences to the path of capital-embodied technology. In particular, our model recovers the level of embodied technology from the price of new capital and the growth rate of embodied technology from the price of new capital relative to old capital. We then measure the stocks of quality-adjusted capital in agriculture for a sample of 16 countries at different stages of development. We find that adjusting for differences in quality almost doubles the importance of capital in accounting for cross-country differences in agricultural l...

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