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Corn is an economically important crop of the Poaceae family. In 2021, the cultivation of corn has taken a global lead as one of the most important crops produced worldwide. At the same time, thanks to advanced technology, many crops can be combined with precision agriculture, a part of which is the Geographical Information Systems (GIS). GIS is a very useful tool in the decision-making process in the field of agriculture. In the present postgraduate thesis, the use of different fertilizers in a corn cultivation and in an an area of 13.6 acres was investigated with the help of GIS. For this purpose, during the years 2019-2020, treatments of chemical fertilization, slow-release fertilization, green fertilization, manure and a control were applied. The fertilizations and sowing of corn were done with the help of innovative and advanced machines based on the precision agriculture of the ISOBUS system. The measurements of plants height and silage production showed that the most efficient fertilization was that of slow-release.