Response of DEKALB® Brand Corn Products to Planting Mistakes

Trial Overview

  • The purpose of this demonstration was to simulate planting errors that growers often encounter when planting corn. This demonstration is similar to the missing row plot that has been conducted at the Monsanto Learning Center at Scott, MS over the last few years.

Research Objective

  • Measure the yield potential of corn products planted “correctly” at the appropriate populations
  • Measure the ability of corn products to compensate or “flex” in response to missing rows or missing twins in a planter pass.
  • Give another measure of the flex characteristics of DEKALB® brand corn products.
Location
Soil Type
Previous Crop
Tillage Type
Planting Date
Harvest Date
Potential Yield
Planting Rate
Scott, MS
Clay Loam
Soybeans
Conventional
03/28/2017
08/25/2017
250 bu/acre
Various

Site Notes:

These were 4-row, twin-row passes planted with a Monosem planterRows were 175 feet longAll agronomic inputs were per local standardsNitrogen (N) was applied at a rate of 240 lb/acre DKC70-27 brand and DKC67-44 brand were planted at 32,000 kernels/acre in checks and 24,000 or 28,000 in treatments
All others were at 36,000 kernels/acre in the check and 27,000 or 31,500 in treatmentsSolid planted at either 32,000 or 36,000 kernels/acre plantedOne full row unplanted – 1/4 of the pass missingCorn products planted at 32,000 kernels/acre would have a final population of 24,000 planted per acreCorn products planted at 36,000 kernels/acre would have a final population of 27,000 planted per acreOne twin-row unplantedCorn products planted at 32,000 kernels/acre would have a final population of 28,000 planted per acreCorn products planted at 36,000 kernels/acre would have a final population of 31,500 planted per acreTwo separated twins on two different rows left unplantedCorn products planted at 32,000 kernels/acre would have a final population of 24,000 planted per acreCorn products planted at 36,000 kernels/acre would have a final population of 27,000 planted per acre

Understanding the Results

 
Figure 4. Response of DEKALB® brand corn products to planting errors at Scott, MS. 
 
Figure 5. Response of DEKALB® brand corn products to planting errors at Scott, MS, when averaged across products. 
 

What Does This Mean for Your Farm

  • None of the corn products tested were able to compensate greatly for the missing plants in the field, although a range of compensation did appear to exist.
  • DKC70-27 brand appeared to be the least compensatory and DKC68-26 brand was the most compensatory in this demonstration.
  • The other corn products were intermediate in their ability to compensate.
  • The populations tested may not be the appropriate ones for each corn product in every geography.
  • This information points out the requirement for correct populations and uniformity in corn fields to optimize yield potential.
  • Fields should be carefully evaluated for replanting after emergence and issues corrected at once if they exist.
  • Data from this demonstration may help in defining the “flex” inherent to each corn product tested.