TY - JOUR AU - Foster, Andrew D AU - Rosenzweig, Mark R TI - Are There Too Many Farms in the World? Labor-Market Transaction Costs, Machine Capacities and Optimal Farm Size JF - National Bureau of Economic Research Working Paper Series VL - No. 23909 PY - 2017 Y2 - October 2017 DO - 10.3386/w23909 UR - http://www.nber.org/papers/w23909 L1 - http://www.nber.org/papers/w23909.pdf N1 - Author contact info: Andrew Foster Department of Economics and Community Health Brown University 64 Waterman Street Providence, RI 02912 Tel: 401/863-2537 E-Mail: afoster@brown.edu Mark Rosenzweig Department of Economics Yale University Box 208269 New Haven, CT 06520 Tel: 203/432-3588 E-Mail: mark.rosenzweig@yale.edu M2 - featured in NBER digest on 2017-11-30 AB - This paper seeks to explain the U-shaped relationship between farm productivity and farm scale - the initial fall in productivity as farm size increases from its lowest levels and the continuous upward trajectory as scale increases after a threshold - observed across the world and in low-income countries. We show that the existence of labor-market transaction costs can explain why the smallest farms are most efficient, slightly larger farms least efficient and larger farms as efficient as the smallest farms. We show that to explain the rising upper tail of the U characteristic of high-income countries requires there be economies of scale in the ability of machines to accomplish tasks at lower costs at greater operational scales. Using data from the India ICRISAT VLS panel survey we find evidence consistent with these conditions, suggesting that there are too many farms, at scales insufficient to exploit locally-available equipment-capacity scale-economies. ER -