Previsão de preços dos principais produtos agropecuários produzidos no município de Alegrete – RS

Abstract

Farming takes a prominent position in the world economy. With scientific advances led the country to significantly increase its production capacity and competitiveness over the past decades. This work aimed to make predictions for the coming years, concerning the price of the main agricultural products produced in the city of Alegrete / RS. The data base on the quantity produced of the main products were collected from township enterprises, Cooperativa Agrícola Ltda Alegretense - CAAL - provided data Rice , Rural Union Alegrete data Boi and through the Center for Advanced Studies in Applied Economics - CEPEA-ESALQ/USP - Soybean data , forecasts of prices , from January 1995 to December 2012 . For realization of the price of crops Rice, and Soybean Boi was used in the municipality estimates the Box -Jenkins methodology, mathematical models with ARIMA and SARIMA. The results were outside the confidence intervals, concluding that the models were not applicable to the purpose of forecasting.