Forecasting Seasonally Cointegrated Systems: Supply Response of the Austrian Breeding Sow Herd

Adusei Jumah () and Robert Kunst ()

European Review of Agricultural Economics, 1996, vol. 23, issue 4, 487-507

Abstract: This paper examines the relevance of incorporating seasonability in agricultural supply models. Former studies have eliminated the problem of seasonability by using seasonally adjusted data. Recent developments in cointegration techniques allow the comprehensive modelling of error correcting structures in the presence of seasonability. We consider a four-variable model for Austrian agriculture. Series on the producer price for soybeans, bulls and pigs, as well as the stock of breeding sows are included. A vector autoregression incorporating seasonal cointegration is estimated. A tentative interpretation of long-run and seasonal features is considered. Forecasting experiments are reported. The results of our experiments indicate that models that do not account for seasonal cointegration may yield better forecasts at short prediction horizons, but the seasonally cointegrated model tends to dominate at larger step sizes. Copyright 1996 by Oxford University Press.

Date: 1996
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