Fig. 5. Screenshots of the summary ‘Results’ pages from four simulation runs of long-term yield potential at Lincoln, NE using different combinations of planting date and hybrid maturity: Simulation run 1, planting on 1 May with 1500 growing degree days (GDD) hybrid; Simulation run 2, planting on 15 May with 1500 GDD hybrid; Simulation run 3, planting on 1 May with 1590 GDD hybrid; Simulation run 4, planting on 15 May with 1590 GDD hybrid. Other input settings are shown in the top screen of Fig. 1.