Eight expts. were carried out in pots filled with light soil and addn. of fertilizing agents, such as NPK fertilizer, sewage sludge and waste mineral wool, used sep. or together. Soil samples were taken for 3 growing seasons and the total Pb, Zn and Cu content as well as their speciation forms were detd. The sewage sludge and its mixts. with waste mineral wool increased the content of Pb, Cu and Zn in relation to the control, but did not result in exceeding the permissible levels in the soil.