Nitrogen (N) is an expensive yet necessary input in corn systems.
Proper N application rates can help maximize corn yield potential and efficiency while minimizing environmental and economic losses.
Corn products may have different responses to additional N.
This trial evaluated the yield response of eight DEKALB® corn products to N application rate.
RESEARCH SITE DETAILS
|Soil Type||Silt Loam|
- Treatments consisted of eight DEKALB corn products planted at 36,000 seeds/acre with three different N rates applied:
- 0 lbs/acre
- 120 lbs/acre
- 240 lbs/acre
- Nitrogen in the form of 32% urea and ammonium nitrate (UAN) (32-0-0) was applied preplant and incorporated.
- Plots were harvested and adjusted to 15% moisture
- There were three replications of each treatment.
UNDERSTANDING THE RESULTS
Response to N rate varied by corn product.
When factoring in N cost, increasing N rate was not always profitable.
- Many factors, including product genetic background, soil type, weather, previous crop, tillage, etc., can influence the yield response and profitability potential of an N application.
- It is important to consider yield goals and N cost when making management decisions.
- Response to N can vary from year to year. Consult your local Field Sales Representative or Technical Agronomist for recommendations for your farm.