Develops state-level measures for the total factor productivity growth in US agriculture using a detailed adjustment for the quality of inputs and outputs. Then uses that to analyze the presence and determinants of convergence across states, the contribution of individual factors to productivity growth, the importance of spillovers across states, and the economic effects of research and extension. Finds that a commonly available body of technical information has led to a convergence among states, and that the technological changes have reduced land and labor costs and increased capital and purchased input. The return on research investment seems to be diminishing. The study should guide policy for funding future agricultural research. Annotation c. Book News, Inc., Portland, OR (booknews.com)
Includes bibliographical references (p. 145-154) and index.
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