A Decomposed Negative Binomial Model of Structural Change: A Theoretical and Empirical Application to U.S. Agriculture

C. S. Kim, Gerald Schluter (), Glenn Schaible (), Ashok Mishra () and C. Hallahan

Canadian Journal of Agricultural Economics/Revue canadienne d'agroeconomie, 2005, vol. 53, issue 2‐3, 161-176

Abstract: We developed a single‐equation decomposed negative binomial regression model (NBRM) of the U.S. farm sector to simultaneously evaluate structural changes in the U.S. agricultural sector and the strength of several economic forces that influenced the changes in farm structure during the 1960–96 period. We found all these forces reinforced economic incentives to increase the size and decrease the number of small farms. Only agricultural programs and machinery prices countered these forces. Nous avons élaboré un modèle de régression binomiale négative (NBRM) décomposéàéquation unique pour le secteur agricole des États‐Unis afin d'évaluer simultanément les changements structurels de ce secteur ainsi que la puissance de plusieurs forces économiques qui ont influencé les changements de structure des exploitations agricoles au cours de la période 1960–96. Nous avons conclu que toutes ces forces ont renforcé les stimulants économiques en faveur d'une augmentation de la taille des exploitations et d'une diminution du nombre de petites exploitations. Seuls les programmes agricoles et le prix de la machinerie ont contrecarré ces forces.

Date: 2005
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