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Existe não linearidade na convergência de preços para mercados agrícolas no Brasil?

Author

Listed:
  • Barbosa, Gerrio dos Santos
  • Tabosa, Francisco Jose Silva
  • Trompieri Neto, Nicolino
  • Barbosa , Rafael Barros

Abstract

O presente artigo explanou acerca dos métodos para testes de raízes unitárias com efeito limiar (TAR) aplicado a dados em painel, com ênfase na técnica econométrica elaborada por Beyaert e Camacho (2008) e adaptada para o setor do tomate no Brasil por Tabosa, Ferreira e Castelar (2014). Diante disso, caso constatada a Lei do Preço Único, diz-se que ocorre convergência dos preços nos diversos mercados analisados, indicando que os preços convergem para um dado estado estacionário, ou seja, um preço de equilíbrio de longo prazo. Os primeiros testes não rejeitam a hipótese nula de que o modelo a ser estimado seja linear (modelo Evans-Karras). Os resultados apontaram para mercados que convergem no longo prazo.

Suggested Citation

  • Barbosa, Gerrio dos Santos & Tabosa, Francisco Jose Silva & Trompieri Neto, Nicolino & Barbosa , Rafael Barros, 2018. "Existe não linearidade na convergência de preços para mercados agrícolas no Brasil?," Revista Brasileira de Estudos Regionais e Urbanos, Associação Brasileira de Estudos Regionais e Urbanos (ABER), vol. 12(2), pages 205-224.
    • Handle: RePEc:ris:rberur:0067
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    More about this item

    Keywords

    Integração econômica; Lei do preço único; Produtos agropecuários;
    All these keywords.

    JEL classification:

    • C23 - Mathematical and Quantitative Methods - - Single Equation Models; Single Variables - - - Models with Panel Data; Spatio-temporal Models
    • Q11 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Agriculture - - - Aggregate Supply and Demand Analysis; Prices
    • Q13 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Agriculture - - - Agricultural Markets and Marketing; Cooperatives; Agribusiness

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