The macroeconomic effects on agricultural prices in the Greek economy
and, in particular, differences in prices paid and received by farmers
(cost-price squeeze) are examined employing integration and cointegra
tion analysis. A Johansen cointegration test between prices paid and p
rices received by farmers supports the presence of cost-price squeeze,
since non-cointegration between the two price indices cannot be rejec
ted. In other words, prices paid by farmers respond more than prices r
eceived by farmers during inflationary periods and hence affect their
parity ratio. Multivariate cointegration tests indicated that forces o
utside agriculture can explain the non-cointegration between farm inpu
t and output prices. These forces are monetary macro variables through
the country's macroeconomic policy, such as money supply, the general
price level ant the domestic product.