NUTRIENTS IN A CALCAREOUS SOIL AFFECTED BY CADMIUM

A calcareous soil (Haploxeroll calcic) was amended in two different fo rms according with the standard nutritional requirements of tomato pla nt. The treatments applied were: i) an organic fertilization applying sewage sludge (SS), ii) an inorganic fertilization (IN) using mineral fertilizers (NPK), and iii) a treatment called W where no fertilizer w as applied. For each treatment, cadmium (Cd) pollution was added to th e soil establishing different concentrations (0, 3, 30 and 100 mg kg(- 1) d.w.). The availability of macronutrients and micronutrients were a nalyzed in the soil. Phosphorus (P), iron (Fe), and copper (Cu) were t he nutrients more affected by Cd. In general, sewage sludge favored th e availability of nutrients in the same degree of the inorganic fertil ization.