EN
The study, based on Central Statistical Office of Poland (GUS) data for the period 1998–2005, analyzed the relationship between variability of fertilization and crop variability: cereals, potatoes, sugar beet, oilseed rape, hay, number of tractors per 100 hectares of agricultural land, the value of crop production by years and provinces. The macro-scale analysis with difficulty shows the influence of fertilization on reducing the volatility of yields.