Wplyw zroznicowanego nawozenia organicznego i azotowego na zmiany zawartosci przyswajalnego magnezu w glebie lekkiej

In a static experiment, which has been carried out since 1979, different fertilization treatment with manure and mineral nitogen were applied. In this experiment the following crop rotation potato, winter rye, winter rye was applied. The organic matter applied to the soil in the form of manure and straw had positive influence on the obtained yield and the contents of Mg in plant material. The manure in comparison to the straw had higherinfluenceonaccumulation and transformation of the Mg from not assimilable forms in the top soil by positive interaction with mineral fertilizers.