In a 3-year pot experiment changes in selected properties of acid light loamy sand induced by lime-treated sewage sludge (LS) admixture were studied. Single LS admixtures were applied in the following doses: 2% and 5% that corresponds to 56 and 140 Mg·ha-1, respectively; the same amounts were mixed with sugar-beet flume washing earth from a sugar plant sediment tanks (for a 10% dose it corresponds to 280 Mg·ha-1) and ash from a straw-fired boiler (corresponding to 0.9 Mg·ha-1). The results were compared to a control sample (0 soil only) and to a standard mineral NPK fertilisation for maize.
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