Effect of Active Carbonate on Available Micronutrients in Soils

The primary objective of the present study was to investigate the effects of soil active carbonate contents on availability of micronutrients. A total of 20 soil samples were selected for this purpose. The lime content of the first ten samples ranged from 10.02 % to 10.99 % (CV = 3.23). The active carbonate content of these samples varied between 2.90 % and 6.95 % (CV = 34.18). There were not any significant correlations between the active carbonate and availability of micronutrients in these ten samples. The lime content of the second ten samples ranged from 30.01 % to 34.43 % (CV = 4.31). The active carbonate content of these samples varied between 6.05 % and 14.39 % (CV = 30.01). In the second ten samples, there were not any significant correlations between active carbonate and availability of micronutrients, except for Cu. A negative correlation was observed between active carbonate and available Cu (r = -0.667 *) levels.