Date on ten U.S. field crops for the period 1950 to 1977 are used to determine whether alternative single variable measures provide the same assessment of relative variability. The results demonstrate that the measurement and analysis of instability may be highly dependent on the choice of...

Diverse needs and preferences across the United States provide justification for the devolution, or decentralization, of many Federal Government programs to the State or local level. The move toward devolution, however, has not been evidenced in U.S. agricultural policy, despite significant...