The present experiment studied effects of systematic, differentiated mineral fertilisation and liming on the amount of N-NO₃^–. K, Mg, Ca, Na ions lost from the 0-40 cm soil layer during meadow sward vegetation period as a result of leaching. The highest amount of filtrate was observed in the control object for both series, i.e. without liming and with liming. During vegetation, the level of filtrate amounted to, respectively, 224 and 213 mm on the average. The lowest pH of the lysimetric water was found in the objects fertilised with double doses of nitrate and urea. Calcium was leached from the soil to the highest degree, i.e. from 38.4 mg/lysimeter in the object unilaterally fertilised with phosphorus (the series with liming) to 231.6 mg/lysimeter on the object fertilised with 180 kg N in the form of ammonium nitrate (the series without liming). Leaching of potassium depended on the applied fertilisation with this element. The lowest loss of magnesium was found in the object unilaterally fertilised with phosphorus; respectively 12.5 mg Mg/lysimeter for the series without liming and 14.1 mg Mg/lysimeter for the series with liming.