Corn Product Yield Response to Seeding Rate and Nitrogen Rate - Rich Hill, MO

Rich Hill, Missouri

Trial Objective

To evaluate the yield response of Lewis Hybrids™ brand blend corn products to three seeding rates and two pre-plant nitrogen application rates.

Research Site Details

  • Eight Lewis Hybrids™ brand blend corn products were planted in two adjacent blocks. One block received 125 lb nitrogen/acre and one block received 200 lb nitrogen/acre. Anhydrous ammonia (NH3) was applied on Jan. 18, 2018. 
  • Each seed product was planted at 22,000 and 28,000 seeds/acre in each nitrogen rate block.
  • Each treatment area was 8 rows wide (30-inch rows) and approximately 350 feet long.
  • The treatments were not replicated.

Understanding the Results

  • Rich Hill, Missouri experienced extreme heat stress and drought conditions after July 4th, which may have adversely affected the yield results.
  • The highest individual yield for all of the products was exhibited at the 28,000 seeds/acre and 200 lb nitrogen/acre treatment.
  • Four of the eight products exhibited higher yields at the 200 lb nitrogen/acre treatment at both seeding rates compared to the 125 lb nitrogen/acre treatment.


What Does This Mean For Your Farm?

  • The response of corn products to seeding rates and nitrogen rates is influenced by climate, especially precipitation, and soil conditions.
  • Farmers should work closely with their local seed sales team to determine the optimal seeding rates and nitrogen rates for corn products in order to maximize yield potential.