January 28, 2020

Influence of Seeding and Irrigation Rates on Three Channel® Brand Corn Products in Northeastern Nebraska

Information is needed on how seeding and irrigation rates influence corn product performance.
This study was designed to assess the performance of three Channel® brand corn products across multiple seeding rates and two irrigation environments to help growers select products and seeding rates for the irrigation environment on their farm.

Three Channel® corn brand blends ranging from relative maturities (RM) of 111 to 113 were evaluated.
The trial was a split-plot design with irrigation as the whole plot and corn product by seeding rate as the subplot. Treatment combinations were replicated twice.
Two irrigation rates were used:
- Full irrigation (100% FI) – 7.6 inches/acre
- 50% of FI – 3.8 inches/acre
In addition to irrigation, 23.7 inches of rainfall occurred during the growing season.
For both irrigation rates, the three corn products were planted at 32, 36, and 40K (K=000s) seeds/acre.
At 100% FI, the three products were also planted at 24, 44, and 50K seeds/acre.
At 50% FI, the three products were also planted at 18, 28, and 48K seeds/acre.
Weeds were managed uniformly, and no fungicides or insecticides were applied.

The performance of each corn product under the different seeding rates stresses the importance of knowing the optimum seeding rate for each product (Table 1).
As a general trend, the three products exhibited better yield performance with 100% FI.

Corn products differ in their response to irrigation amount and seeding rate.
Producers should consider their irrigation and precipitation environment when making product and seeding rate decisions to achieve the best yield potential on that acre.
Growers should consult their local seed sales team for information on how their branded products performed in the study.

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