Four granulated org.-mineral fertilizers were produced of a mixt. of mushroom compost and urea, single superphosphate, a K salt or (NH4)(2)SO4. In addn., 2 fertilizers were produced on the basis compost and sewage sludge mixed in a 5:1 vol. ratio, and one of them before the granulation was addnl. doped with (NH4)(2)SO4. The content of N, P, K, Ca, Mg, S, org. matter as well as Cu, Zn, Mn, Ni, Cd, Pb and Cr in the fertilizers was detd. by instrumental anal.