EN
Essential acidification and changes of the saturation of sorptive complex with exchangeable cations have been caused by an intensive mineral fertilization applied three years earlier. The greatest differentation has been caused by the use of nitrogen and potassium, smaller-by the use of phosphorus. Using great doses of mineral fertilizers should realise theresults. sequent as well, concerning the effect on ionic balance of soil, the feeding of plants and changes in their chemical composition.