In the 2000-2010 year the prices surge of agricultural production took place. It refers especially to the mineral fertilizers. In this paper the analyses of the mineral fertilizers prices in the domestic market are shown, taking seasonal changes under consideration. The synthetic representation of the researched phenomenon seasonality has been reached by seasonality rates calculating (additive). The research results show that the prices of all put to analysis fertilizers are characterized by seasonality, but the oscillation rate was different. The prices seasonality rates of ammonium nitrate were higher than other fertilizers.
Financed by the National Centre for Research and Development under grant No. SP/I/1/77065/10 by the strategic scientific research and experimental development program:
SYNAT - “Interdisciplinary System for Interactive Scientific and Scientific-Technical Information”.