Vekic, T.T., Ivezic, V., Popovic, B., Semialjac, Z., Kerovec, D. and Loncaric, Z. 2017. GIS Modeling of Site-Specific Fertilization Requirements. European Scientific Journal, ESJ. 13, 12 (May 2017). DOI:https://doi.org/10.19044/esj.2017.v13n12p%p.