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Published online by Cambridge University Press: 28 April 2015
The impact of technological advance in reducing the need for agricultural land has been more or less recognized since at least the early 1950s. After experiments with general cropland retirement in the 1956-60 Conservation Reserve Program, U. S. farm policy turned to annual acreage adjustments, commodity by commodity. Now farm policy proposals once again include the general cropland retirement approach, either alone or in combination with annual commodity programs.