Evaluation of DEKALB® Brand Corn Products

Evaluation of DEKALB® Brand Corn Products - 2021



  • Each season, the Bayer Learning Center at Scott, Mississippi evaluates market leading corn products for adaptability to the southern corn growing region (Figure 1).

  • These experiments are conducted at Scott on different alluvial delta soil types.  The Buckshot site is a heavy clay and the Highway site is deep sand. 

  • Yield potential and plant characteristics (ear height and weight) are important factors to consider when selecting a corn product for your operation.


Figure 1. DEKALB® brand yield trial at Scott, MS (2021). Figure 1. DEKALB® brand yield trial at Scott, MS (2021).
Considerations for Planting Dekalb® Corn in 2021 pt 1


To start of his series about considerations to make when planting Dekalb corn in 2021, Jay Mahaffey talks about several aspects of preplanting, including row configuration, hybrid consideration, seed treatment, technology, and planter preparation.


  • All field work, tillage, and herbicides were per local standards. 
  • 275 lbs/acre of nitrogen (N) was applied to both experiments as liquid 28-0-0-5. 

There were 20 DEKALB® Brand products planted:  

  • DKC62-08 Brand (SmartStax® Corn)  

  • DKC62-53 Brand  (VT Double PRO® Corn)  

  • DKC62-70 Brand  (VT Double PRO® Corn) 

  • DKC62-89 Brand  (Trecepta® Corn) 

  • DKC64-35 Brand (VT Double PRO® Corn) 

  • DKC65-84 Brand (SmartStax® Corn) 

  • DKC65-95 Brand (VT Double PRO® Corn)  

  • DKC65-99 Brand  (Trecepta® Corn) 

  • DKC66-18 Brand (VT Double PRO® Corn) 

  • DKC66-75 Brand (VT Double PRO® Corn) 

  • DKC66-94 Brand (Roundup Ready® Corn 2) 

  • DKC67-37 Brand (SmartStax® Corn) 

  • DKC67-44 Brand (VT Double PRO® Corn) 

  • DKC67-72 Brand (VT Double PRO® Corn) 

  • DKC67-94 Brand (Trecepta® Corn) 

  • DKC68-48 Brand (SmartStax® Corn) 

  • DKC68-69 Brand (VT Double PRO® Corn) 

  • DKC68-95 Brand  (SmartStax® Corn) 

  • DKC69-99 Brand (Trecepta® Corn) 

  • DKC70-27 Brand (VT Double PRO® Corn) 

Plots were single replicates planted in 38-inch wide six row strips.  

Row length varied from 360 to 600 feet long and ranged from 0.16 to 0.26 acre/plot.  


Location Scott, MS     
Soil Type  Buckshot  (45 CEC), Highway Field  (15 CEC)   


Planting Date 4/6/21    
Harvest Date 8/25/21  

Potential Yield
250, 300    
Seeding Rate



  • Data collected: 
    • Buckshot Site
      • Average yield (bu/acre) determined by harvesting entire plot with commercial combine and moisture content corrected to 15.5%
    • Highway Site
      • Average yield (bu/acre) determined by harvesting entire plot with commercial combine and moisture content corrected to 15.5%.
      • Ear height – The height of 10 ears per product was measured from the ground to the ear shank.
      • Ear weight – 10 ears per product were weighed.


  • Plots averaged 92% stand establishment post emergence.
  • Buckshot Site 
    • Yields were excellent in these soil types for 2021 with an average yield of 224 bu/acre. 
    • Several products tested had average yields in excess of 230 bu/acre indicating that the DEKALB® Brand offers several new and existing products that can yield well in heavy soils.  

image Figure 2. Average DEKALB® brand yield (bu/acre) at the Bayer Learning Center at Scott, MS Buckshot Field (2021) at 15.5% moisture content.


  • Highway Site
    • Yields at this location were higher than the Buckshot location with an average yield of 256 bu/acre. 
    • The highest average yields in this trial were in the 280 bu/acre range with several products (8 of 20) demonstrating average yields in excess of 260 bu/acre. In this trial, 15 of 20 tested products yielded more than 250 bu/acre.
    • Ear height varied by up to 13 inches (23%) across the tested products.
    • Ear weight varied by up to 50 grams (21%) across the tested products.
image Figure 3. Average DEKALB® brand yield (bu/acre) at the Bayer Learning Center at Scott, MS Buckshot Field (2021) at 15.5% moisture content.
image Figure 4. DEKALB® brand average ear weight (grams/ear) of 10 ears per product at the Bayer Learning Center at Scott, MS (Highway Field - 2021).
image Figure 5. DEKALB® brand average ear height (inches) of 10 ears per product from ground to shank base at the Bayer Learning Center at Scott, MS (Highway Field - 2021).


  • Based on the average ear height, ear weight, and yield data from this trial, the DEKALB® brand offers a robust lineup of corn products that fit the diverse soil types of the Mississippi Delta.

  • Growers should consider their personal preferences, product yield potential, and individual plant characteristics when selecting corn products for the 2022 growing season.





Yield Response of Dekalb Corn Hybrids - 2019



  • Every season, new corn products are introduced into the marketplace.

  • This field demonstration was conducted to evaluate the adaptation and yield potential of existing and new DEKALB® corn products in the production system at the Scott Learning Center in Scott, Mississippi.



Corn Populations


Sammy Soignier and Jay Mahaffey give a brief visual tour of corn populations in 2020.

Location Scott, MS     
Soil Type  Commerce silt loam   


Planting Date 4/03/19    
Harvest Date 8/19/19  

Potential Yield
Seeding Rate

  • Fourteen DEKALB® corn brands were planted in single-row plots with 38-inch row spacing at 37,500 seeds/acre in a bedded planting system:
    • DKC 62-08
    • DKC 62-53
    • DKC 64-35
    • DKC 65-95
    • DKC 65-99
    • DKC 66-18
    • DKC 66-75
    • DKC 67-44
    • DKC 67-72
    • DKC 67-99
    • DKC 68-26
    • DKC 68-69
    • DKC 69-26
    • DKC 70-27
  • All weed control, insect control, and irrigation inputs were applied per local standards.
  • 240 lb actual nitrogen was soil applied as 32% UAN in liquid form using knife application.
  • Strip plots were 12 rows x 500 feet long; 6 rows were harvested for yield.
  • Seedling emergence/establishment during 2019 was over 90%.




  • In 2019, corn yields were near the long-term averages, which are typically 250+ bu/acre.
  • Several of the planted products appeared to be very well adapted for the high-input, irrigated corn production systems of the deep south.
  • Little lodging was observed in 2019 but it could be an issue with taller, more erect corn products.  For that reason, this data should mainly be used as an indication of yield potential and population determinations for each field made on a site/product-specific basis.




  • Growers should carefully evaluate each product planted for both yield response and standability.  
  • Breeding efforts continue to focus on developing locally adapted corn products to serve the needs of southern corn producers.
  • Please consult your local Bayer sales representative for further information.





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