1Department of Organic Chemistry and Plant Physiology, University of Kragujevac, Faculty of agriculture ÄŒaÄak, Republic of Serbia
2Mr. Sci. Senad Murtić, Department of Botany and Plant Physiology, Faculty of agriculture and food science, University Of Sarajevo, Zmaja od Bosne 8, 71000 Sarajevo, Bosnia and Herzegovina
3Federal Institute for Agropedology, Sarajevo, Bosnia and Herzegovina
4Faculty of Agriculture, East Sarajevo, Republic of Srpska, Bosnia and Herzegovina
5Institut for vegetable crops, Smederevska Palanka, Republic of Serbia.
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