Price convergence in Brazilian corn and wheat markets

Abstract

This paper aims to verify the integration of markets, price convergence and the estimation of the half-life of the two main products of the Brazilian agribusiness: corn and wheat. For this purpose, the methodology used in this study is based on works by Choi et al. (2006), Mohsin & Gilbert (2010), Chin & Habibullah (2008) and Ucak (2012). Panel data from several Brazilian markets for corn and wheat is used, covering the period from January 2000 to June 2018. The results show that, according to the LLC and IPS unit root tests, both for the cases of corn and wheat, there is integration between these markets, thus indicating a convergence between the price series. This result is similar to the conclusions reached by works such as Barros et al. (2014) and Tabosa et al. (2014).