Yield Response of Channel® Brand Corn Products to Fungicide Applied at Flowering

TRIAL OBJECTIVE

  • Corn product yield responses to fungicide applied at the R1 growth stage varies. Understanding which corn products benefit most from a fungicide application can help guide management decisions by growers.

  • This trial helped determine the magnitude of yield response of individual corn products.

 

RESEARCH SITE DETAILS

  • An early relative maturity (RM) (less than or equal to 103 RM) corn product replicated trial was established in Mason, Michigan, and a late RM (greater than 103 RM) corn product trial was established in Colon, Michigan. 

  • Channel® brand corn products included in testing for Michigan were selected by Channel® Seedsmen.

  • The trial in Mason was a split-plot design with three replications with corn product as the whole plot and fungicide as the sub-plot. This location was rainfed and did not receive irrigation. 

  • The trial in Colon was an irrigated strip trial with a single replication.

  • An application of Delaro® Complete Fungicide (10 oz/acre) was made on 7/13/21 in Mason and 7/14/21 in Colon at the R1 corn growth stage. A high-clearance sprayer with 20 gal/acre of water as carrier was used.

     

Mason, Michigan
Location Mason, MI     
Soil Type  Loam   

Previous
Crop
Soybean     
Tillage
Type
Conventional  


 
Planting Date 4/26/21     
Harvest Date 9/27/21   

Potential Yield
 (bu/acre)
200     
Seeding Rate
(seeds/acre)
34,000 


 
Colon, Michigan
Location Colon, MI     
Soil Type  Sandy loam  

Previous
Crop
Soybean     
Tillage
Type
Conventional  


 
Planting Date 4/27/21    
Harvest Date 9/18/21  

Potential Yield
 (bu/acre)
250    
Seeding Rate
(seeds/acre)
36,000


 

UNDERSTANDING THE RESULTS

  • Mason received below average rainfall until late-June, followed by near-normal rainfall for the remainder of the season.

  • Moderately high tar spot pressure was present in Colon and moderate pressure in Mason. The heightened pressure is Colon could be explained by the presence of consistent irrigation moisture. 

 

image Figure 1. Yield response of Channel® corn products treated with fungicide at the R1 growth stage in Mason, MI.
image Figure 2. Yield response of Channel® corn products treated with fungicide at the R1 growth stage in Colon, MI.

KEY LEARNINGS

  • The average yield advantage to an application of Delaro® Complete Fungicide at R1 growth stage was 13 bu/acre.

  • Fungicide applications tend to result in a yield increase; however, select corn products demonstrated a greater yield benefit from a fungicide application.

  • Growers should first consider targeting corn products with the greatest response for fungicide applications.

     

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