Agricultural support policies are important for the sustainability of the agricultural sector of the countries. Policy instruments may change on the basis of countries and periods. In this research, the effects of Turkey's supply deficit experienced which are sunflower, soybean, safflower and rapeseed cultivation areas of deficiency payment supports were investigated. The research includes between 1994-2016 years. Granger Causality Test and Johansen Cointegration Test was used. According to the results obtained, the effect of deficiency payment support on sunflower producer decisions was statistically significant. Safflower, rapeseed and soybean on cultivation areas while there was no significant effect. However, it has been determined that the between deficiency payment support with the current prices is available an interaction. Accordingly, it may be advisable to discuss of the different payment support with a participatory approach, taking into account the problems experienced in support policies in the past periods. The maintenance of such supports can be expressed as a requirement, since it is in property of being protected in terms of market prices. However, from one side, the place of support in the budget, from the other side. the effects on the producer's income taking into consideration should not be taken away from a balanced policy approach.