TY - JOUR AU - Amin Ismayilov AU - Fariz Mikailsoy TI - Mathematical models of fertility for the soils of Azerbaijan JO - Eurasian Journal of Soil Science VL - 4 IS - 2 PB - Federation of Eurasian Soil Science Societies SN - 2147-4249 UR - http://ejss.fesss.org/10.18393/89702 DO - 10.18393/89702 SP , EP - 118 - 125 KW - Mathematical modeling, soil fertility, regression analysis, adequacy of the model PY - 2015 AB - The experience shows that when constructing soil fertility models, many researchers prefer single-valued regression analysis. This is primarily due to the fact that regression analyses require simpler statistical calculations, and on the other hand, regression equations enable a physical explanation of the process under study. The research goal is to determine the effect of soil fertility indices and mineral fertilizers on the yields of crops (cereals) grown in the Karabakh Steppe on gray-brown irrigated soils. ER -