Northwest Iowa Research Farm Field Day Is July 13

Tar spot, nitrogen management and weed control on the agenda

July 7, 2022, 10:49 am | Joel DeJong

SUTHERLAND, Iowa – The annual Northwest Iowa Research and Demonstration Farm field day will be held Wednesday, July 13, from 9:30 a.m. to noon at the farm, 6320 500th St., Sutherland. New this year, an optional corn rootworm field day will also follow lunch at 1 p.m.

The event will focus on timely topics, including tar spot, nitrogen management, weed control, carbon and renewable energy and more.

Rows of soybeans.“Farmers and agronomists can plan for a full day of learning at the research farm,” said Joel DeJong, field agronomist with Iowa State University Extension and Outreach. “This year we are offering two field days in one day in an effort to maximize education and networking time.”

The program will begin at 9:30 a.m. with Chad Hart, professor in economics and extension grain markets specialist at Iowa State, presenting “Outlooks: Ag, Carbon and Renewable Energy.”

Following Hart, in-field learning will address:

  • Tar Spot, led by Alison Robertson, professor in plant pathology and microbiology and extension specialist at Iowa State.
  • Nitrogen Management, by Antonio Mallarino, professor in agronomy and extension specialist at Iowa State.
  • Timely Agronomic Topics, by Gentry Sorenson and Joel DeJong, field agronomists with ISU Extension and Outreach.

At the completion of the morning field day, a complimentary noon lunch will be served.

Following lunch at 1 p.m., the Corn Rootworm Field Day will begin. Erin Hodgson and Ashley Dean, entomologists with ISU Extension and Outreach, will provide in-field education using a corn-on-corn demonstration plot.

“The demonstration plot will have non-Bt rootworm corn, SmartStax corn and SmartStax Pro corn with the new RNA-i trait, all with and without insecticides,” DeJong said. “Roots will be rated so everyone can see the differences in person.”

Attendance at the morning and/or afternoon field day is free and open to the public. Registration is not needed. Complimentary morning refreshments are sponsored by Security State Bank, with lunch sponsored by O’Brien County Ag Supply, J&K Insurance, C-S Agrow and 5th Gen Ag.

For more information, contact DeJong at 712-546-7835 or

A printer-friendly field day flyer is available online.

Shareable photo: Soybean field at the Northwest Research and Demonstration Farm.

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