Effects of Organic Amendments and Incubation Time on Cadmium (Cd) Chemical Fractions in a Calcareous Soil

Effects of two organic amendments, cow manure and bagasse compost of sugarcane, on the chemical fractions of cadmium in soil were investigated at three incubation times in the present study. Soil sample was polluted with 50 mg kg-1 of cadmium by spraying the cadmium salt and after 90 days 25 and 50 tons’ ha-1 of the organic amendments were added to the soil. Some of the soil chemical properties and contents of chemical fractions of cadmium were determined by sequential extraction method of Tessier after 1, 30 and 60 days from the date of adding the organic amendments. The most fraction of cadmium in the all of the treatments was observed in the carbonate- fraction and the soluble and exchangeable- and organic matter- fractions of cadmium were significantly (p