Relacionamentos de preços e integração entre o mercado produtor de Tianguá na Serra da Ibiapaba/Ce e mercados atacadistas de Fortaleza / Ce e Teresina / Pi

Abstract

The objective of this paper was to analyze the price relationship and integration between the producer market of Tianguá in Serra of Ibiapaba/CE and the wholesale markets of Fortaleza/CE and Teresina/PI. The weekly price series data was used. For this, the following tests are used: unit roots; the VAR Model; Granger Causality; the Wald for blocks exogeinity; the Variance Decomposition and Impulse Response. The results showed that in the passion fruit and tomatoes markets, Fortaleza showed as independent market, with strong influence over Ibiapaba and Teresina markets. However, in the cucumber market, Teresina showed as independent market with strong influence over Ibiapaba and Fortaleza markets.