Ocena efektu Harbergera-Laursena-Metzlera w polskim sektorze rolno-żywnościowym
The aim of the study was to asses the Harberger-Laursen-Metzler effect in Polish agro-food sector. The analysis covers period of 2002-2017. There was applied the vector autoregression (VAR) methodology. The outcome of the research revealed that permanent deterioration in terms of trade contributed to the current account of Polish agribusiness sector improvement. The temporary effect of terms of trade shocks was not indentified. Additionally, the research enabled recognition of gross value added (GVA) as the most exogenous factor of the VAR system. On the other hand most endogenous factor of the model is the current account. The variable permanent terms of trade is more exogenous factor than the current account.