Nitrogen for the 2023 Corn Crop
Helped more than hurt overall by periods of dry weather during the season, the 2023 Illinois corn averaged 214 bushels per acre, the highest yield on record. We’ll look at some results from N fertilizer trials in 2022 and consider how we manage N for the upcoming season.
N rate
Figure 1 below shows N responses for corn following soybean in nine N rate trials in central Illinois in 2022. These are drawn using actual data points (yields at each N rate averaged over reps),…