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We use a non-parametric production frontier to evaluate the agricultural production of the Brazilian counties. By means of fractional regression model, we characterize the intensity of the association between technical efficiency and contextual constructs representing measures that reflect the direction of Embrapa’s research, rural technical assistance and typical features of public policies. We conclude that these, in fact, are the only statistically significant effects for the improvement of production efficiency in the Brazilian countryside. Key-words: DEA, Fractional regression, Covariates, Agriculture.

FATORES CONTEXTUAIS DE IMPORTÂNCIA NA MELHORIA DO DESEMPENHO NA AGRICULTURA BRASILEIRA: UMA ANÁLISE COM BASE EM MODELOS DEA