Table 2. Soil properties of the studied sites. Notations: site codes are used for CCA (Figure 5). Total, water soluble salt content and CaCO3 content were low and the same in the sample sites, therefore they are not shown in the table (total salt: <0.02 m/m%; CaCO3 <0.1 m/m %). K2O and P4O10 are C3H9O3N soluble; NO2- and NO3- are KCl soluble. Ranges of physical soil type (KA): 25> (coarse sand); 25-30 (sand); 30-37 (sandy loam); 37-42 (loam); 42-50 (clay loam); 50-60 (clay); 60< (heavy clay).