Controlling Volunteer Corn in Soybeans with Precision Spraying

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August 10, 2024

DATE | June 2024

LOCATION | Leigh, NE

CROP | Soybeans

THREAT | Weed Pressure

MISSION |1 2 3 4 5 6

Effectively managing volunteer corn is essential to protect soybean yields and maintain crop health.

PROBLEM

Volunteer corn in soybean fields can be a highly competitive weed, depriving the crop of nutrients, water, and light.
It also poses a risk during crop rotation by hosting pests through the soybean year.
Select Herbicide is commonly used by soybean growers to control volunteer corn, but its effectiveness can be reduced if mixed with other herbicides, making timing critical.

RECOMMENDATION

Volunteer corn pressure was found to be more severe in the terraced northern portion of the field.
Using insights from the 27th, the grower was able to create a spray plan and apply herbicide on the 29th, leaving room for other post-emergent applications.
The grower used zones to create a prescription map based on the varying levels of volunteer corn pressure across the field.

OPPORTUNITY

Timely insight showed that volunteer corn was worse in the terraced parts of the field
The grower sprayed about 22 ac with Select in a targeted way
Grower saved $5 per acre by targeted application, and $35 yield increase compared to finding the weeds presence 3 weeks too late
Grower is comfortable spraying Liberty and Enlist without fear of reduced effectiveness on 35 acres

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