http://polj.uns.ac.rs/ CONTEMPORARY AGRICULTURE / SAVREMENA POLJOPRIVREDA Novi Sad, 60(1-2)2011. CONTEMPORARY AGRICULTURE SAVREMENA POLJOPRIVREDA The Serbian Journal of Agricultural Sciences Srpski časopis za poljoprivredne nauke NOVI SAD Vol. 60 No. 1-2 2011. UDC: 63(497.1)(051)-”540.2” ISSN: 0350 - 1205 University of Novi Sad - Univerzitet u Novom Sadu Faculty of Agriculture - Poljoprivredni fakultet