Channel® Corn Product Response to Nitrogen

TRIAL OBJECTIVE

 

  • Nitrogen is a key input in corn production and is essential for a successful and profitable corn crop.  It is also expensive and can be difficult to manage.

  • Genetics may play an important role in the optimum nitrogen rate and timing of application.

  • This trial was conducted to evaluate the response of several corn products to different nitrogen management strategies.

 

RESEARCH SITE DETAILS

Location Monmouth, IL Planting Date 6/17/19
Soil Type Silt Loam Harvest Date 10/28/2019
Previous Crop Corn Potential Yield
(bu/acre)
250
Tillage Type Conventional Seeding Rate
seeds/acre
36K

  • Five different SmartStax® RIB Complete® brand blend corn products were planted at 36,000 seeds/acre:
    • 209-15STXRIB
    • 210-79STXRIB
    • 211-44STXRIB
    • 213-93STXRIB
    • 216-36STXRIB
  • Each product was treated with three different nitrogen (N) rates and timings:
    • 180 lb N/acre preplant incorporated (PPI)
    • 180 lb N/acre PPI followed by 40 lb N/acre side-dressed at V6
    • 140 lb N/acre PPI followed by 40 lb N/acre side-dressed at V6
    • All nitrogen was applied as 32% UAN solution. A urease inhibitor was added to the side-dress applications.
  • Plots were harvested and yields were adjusted to 15% moisture.

 

UNDERSTANDING THE RESULTS

  • Response to nitrogen rate varied among five products.
  • The products responded differently depending on the timing of nitrogen applications.  
  • Return over nitrogen cost generally followed the yield response trend, although in some cases an increase in yield did not result in an increase in net return.

 

KEY LEARNINGS

 

  • Many factors, including product genetics, soil type, weather, previous crop, and tillage, can influence the yield response and profitability of a nitrogen application.
  • It is important to consider yield goals and nitrogen cost when making management decisions.
  • Response to nitrogen can vary from year to year.  Consult your local Channel® Seedsman or Technical Agronomist for recommendations for your farm.

 

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