During soil analysis, one main problem is the selection of the method for determination of ions in the extracts.These methods must be fast, highly accurate and economical.Therefore, the objective of this work was to compare the efficiency of four calcium and magnesium extraction solutions based on chloride salts using ammonium acetate method (AcONH4) as reference method.In order to do this, five cation extraction methodologies based on CH3COONH4, NH4Cl, NaCl, KCl and LiCl (1N at pH 7.0) were evaluated using 14 soils from the departments of Córdoba and Sucre (Colombia) and characterized by a high content of carbonate.The results obtained were analyzed by statistical analysis using Chloride solution Extraction solutionExchange bases Chemical extraction Carbonate-rich soil