The Agronomy Department at Dunkerton Co-op offers a variety of quality products and services. Stop by and ask about our products, facilities, and services, or call one of our agronomists to get more details on what opportunities we can provide for you.

Application Services:

Fertilizer and Lime Application

  • Broadcast Application

  • VRT Application

  • Foliar Feed (liquid fertilizer applied directly to plants)

  • 360 YieldCenter Y-Drop™ (liquid nitrogen applied to base of corn plants)

Pesticide Application

Broadcast applications of:

  • Pre-emergence herbicides
  • Post-emergence herbicides
  • Fungicides (High clearance machine or aerial application)
  • Insecticides

Cover Crop Application

  • Aerial
  • High clearance machine
  • Post-harvest


Sampling Services:

Plant Tissue Sampling

  • Find current plant nutrient levels

Soil Sampling

  • Composite

  • 2.5-acre grid

  • 10-acre grid


Soil Nitrate Sampling

  • Immediate, in-field soil nitrate level results found with 360 YieldCenter SOILSCAN™


Stalk Nitrate Sampling

  • Corn plant nitrate levels at R6 (crop maturity)

Scouting Services

Curious about what's going on in your field? Or do you have some concerns about something you're seeing in your field that could potentially affect your yields? Give us a call and one of our agronomists will come to assess and evaluate how your crops look. Agronomists can then make recommendations based on their findings.

Cartography Services
Dunkerton Co-op utilizes SMS technology to create GIS-based maps. These maps can include field boundaries, soil nutrient levels, yield data, and much more.



Please click here for more information

Click here for an Application This application can be printed off and then filled out or you can fill it out on your computer and print it off.




For any fertilizer, chemical, Beck's Seed, or soil sampling needs that you may have, contact our agronomy department: 

John Swehla, CCA, Agronomy Dept. Manager: (319) 415-7504

Dein Gosse, Agronomy Sales (319) 240-3026

Austin Cook, Agronomy Sales (319) 240-4524