Nitrogen Rate Effects on NutriDense Corn.

NutriDense corn hybrids contain improved nutritional traits that enhance the feed value of grain. NutriDense hybrids have been licensed to seed companies for distribution by BASF. Field experiments were conducted at two Ohio locations (Piketon and South Charleston) in 2006 and 2007 to determine if NutriDense hybrids respond to nitrogen (N) rates differently than yellow dent corn hybrids, The experiments were conducted on eight NutriDense hybrids and three yellow dent hybrids. Five N treatments (0, 67, 134, 202, and 269 kg/ha) were evaluated with N applied at corn growth stages V3-V5.  The agronomic performance and grain quality data were collected from both test sites. The grain composition of sib pollinated and open pollinated corn planted was compared. Preliminary data indicated differences in yield response to N among hybrids. NutriDense hybrids exhibited higher levels of protein than yellow dent hybrids.  Differences in grain oil and starch content varied across locations. Effect of pollination method on grain composition was generally small. Results of this study will be used in developing N management practices that will optimize yield and grain quality of NutriDense corn.