It is essential for maize cultivation to be monitored in order to assess the efficiency of the fertilization and irrigation plan. Nutrient deficiencies induced by improper fertilization can lead to stunted growth, poor grain and root development, and leaf edge necrosis. Nitrogen over-fertilization may cause leaf tip burn and excessive vegetative growth with poor grain filling, while maize crop water stress at critical stages can significantly impact yield and quality. Satellite imagery may be used to monitor maize crops, offering high resolution data for crop monitoring while storing data from previous years of cultivation for comparison. Applications such as SNAP (a free application by ESA) provides continuous satellite data which can be processed using Geographic Information Systems (GIS). These tools enable the creation of vegetation index maps and thermal maps, allowing for the precise identification of fertilization and irrigation issues within specific areas of the maize field. Farmers can thus make real-time decisions that optimize fertilization and reduce input waste according to the needs of the cultivation.