The soil texture and tillage system may influence the nitrogen efficiency in corn. A commercially available soil electrical conductivity (EC) measurement system (Veris Technologies 3100) was used to identify variations in soil texture across the field and create soil zone maps using GPS and geographic information systems. Because tillage systems are integral parts of crop production, it is important to evaluate the optimum nitrogen application on corn not only based on soil zone maps, but also across different tillage systems. The nitrogen efficiency will be evaluated under three tillage systems (conventional, strip-till, and no-till), two application methods (all at once and as split), and five different application rates (0, 45, 90, 134, and 179 kg N ha-1). The utilization and efficiency of nitrogen application on corn will be evaluated during and at the end of corn vegetation. Generally, this project will help to determine the most efficient optimum N application method and rate on corn for different soil zones and tillage systems.