Total and plant available trace elements in acid and calcareous soils of eastern Croatia

Main agricultural region of Croatia, eastern Croatia has soils of wide acidity. The soils vary from very acid to calcareous soils. Liming is often necessary to achieve suitable conditions for agricultural production. Trace element availability also varies due to the wide range of acidity. Two most common extraction methods for available fraction of trace elements (EDTA and DTPA) have been tested on soils of different pH in order to investigate the relationship between these two methods. The results show different extraction values for different elements between the methods, however for all elements there were a strong correlation between extraction methods indicating that one method can be used to easily predict the values of the other method.