The services offered to our customers by the Agro-Services (Agroslužby) Division are services based on the Global Positioning System). The method lies in taking samples using the satellite GPS system. This, after computer processing, enables farmers to draw a nutrient map and to determine application maps for P, K, and Mg fertilization and liming. The GPS is also used for mapping and for determination of areas, shapes and elevations of individual pieces of land.