Mineral fertilisation pertains to the supply of cations and anions affecting the chemism of soil environment, which leads to changes in the solubility of chemical compounds, including Fe, Mn, Cu and Zn. The purpose of this research was to determine the effects of anions CO32-, SO42-, NO3- applied in the form of calcium salts and of irrigation on the solubility of Fe, Cu, Mn and Zn compounds in light soil. In order to attain our objective, a soil column (PO no 54427) was used for laboratory examinations of irrigated soil. A two-factor laboratory experiment was set up with the method of complete randomisation in three replications, where the first factor was an anion coupled with calcium cations: I – 0, II – CaCO3, III – CaSO4, IV – Ca(NO3)2; and the second one was the soil depth: a – 0-10, b – 10-20, c – 20-30 cm. Soil material was collected from the humus accumulation horizon of brown-rusty soil (0-10 cm). It was characterised by very acid reaction and the amount of ø

19.4.2014