MODIFICATION OF THE VERSATILE FORMS OF MACRO- AND MICROELEMENTS FROM THE SOIL UNDER THE INFLUENCE OF FERTILISERS AND AMENDMENTS

The systematic application of fertilisers and amendments on the fields changes not only the acidity index but also the accessible macro- and microelements yield. Depending on the fertilisation strategy, the applied doses and the chemical forms of the fertilisers, the content of mobile forms of macro- and microelements may increase or decrease. In the paper are studied the mobility of macro- and microelements under the influence of the mineral and organic soil fertilisation. The fertilisers applied to the soil change the versatile phosphates content due to the changes of the soil pH value or due to the adding of organics or mineral phosphates.