641.566.3658 support@afschem.com

2021 AFS Photo Contest

Asmus Farm Supply is running a photo contest. Photos entered into this contest may be used for social media posts, newsletters, printed and digital media for Asmus Farm Supply.  All photographers (professional and amateur) are eligible to enter.

Grower Portal is HERE!

On November 22, 2020 Asmus Farm Supply launched the new ASF Grower Portal.  In addition to offering all the same functions as the Storefront the new Grower Portal will offer online payment, purchase history, quotes, bookings, and invoices. Until then the current Storefront is still available for shopping. 

AFS Protocols Regarding COVID-19

Please view our current protocols and updates regarding business hours and locations. 

Estherville Warehouse Position Open

AFS currently has a warehouse position open at the Estherville, IA location.  This position performs all aspects of warehouse including shipping, receiving and facility requirements. The position will likely require more trucking and delivery time than warehouse time.

A High School diploma or equivalency, able to perform physical activities, ability to drive a forklift, Class A license with Tanker and Hazardous Material enforsement, Iowa seed treatment certification are requirements for the position.

Enriching a New Era in Agriculture

Whether you’re in your tractor or hauling grain in your truck, we’ve got your back. Access your Asmus Farm Supply account information easily through the AFS Grower Portal. Viewing with a browser or through the app growers can plan for the season ahead by developing product plans and quotes. Pay invoices and shop online for products easily and quickly. View statements, invoices, balances, including your Corteva balance with the click of your mouse or tap of your finger. Your business information is available any time of day, from anywhere, with the AFS Grower Portal. 

The free app is available in the Google Play and Apple App Store.  Have questions? Don’t hesitate to give us a call at any of our locations. All of our agronomists are available to assist you with these new features.


 New Portal Features

  • Visit the AFS Grower Portal or download our Asmus Farm Supply app in the app store on your mobile device or tablet.

  • If you were a user of the Storefront you are already enrolled in the AFS Grower Portal with the same login credentials. 

  • If you were not a user of the Storefront please submit an access request to browse products and prices.  This request is an additional process to ensure you are viewing the proper account information.  *Approval of access to prices and products are usually available within 24 hours Monday through Friday. 

  • Browse hundreds of products, check product labels, and submit quote requests to your Agronomists for products that you’re interested in. 

  • The new AFS Grower Portal allows you to review your purchase history,  view prepaid bookings, review statements, and pay invoices online. All major credit cards are accepted as well as bank transfers through our secure website. We also support several financing options as well. 

  • A unique feature of the AFS Grower Portal for Corteva customers is the ability to view Corteva Cash and TruChoice balances. *Available December 16, 2020.  


  • Quick overview display of unpaid balances by date due
  • View current regular, prepay and unapplied cash balances
  • Preview statement and booking information
  • View unpaid invoices


  • Link your Corteva TruChoice account with your AFS Grower Portal account to see information in one location
  • View Corteva Cash
  • View TruChoice balances
  • Pay with Corteva Cash or TruChoice balance


  • Quick overview displays recent invoices and expands to full view invoice list 
  • Filter invoices 
  • View invoice list nad view or print PDF’s

Purchase History

  • View past purchases by product or by year


  • Find a product by shopping and request a quote
  • Accepted quotes turn into bookings
  • Quick overview of recent quotes and expands to a full quote list


  • Statements start generating from the date of enrollment into the AFS Grower Portal
  • Quick overview display of recent statements and expands to view full statement list
  • View statement list and view or print PDF’s


Request Access for AFS Grower Portal

While the promise of precision agriculture is wonderful, the reality is that solutions are often disintegrated. Trust the specialists at Asmus Farm Supply to help you simplify your farm records and utilize the right tools to maximize your productivity and your yield potential. 

By pulling all the pieces together, we’ll help you manage your data. Count on Asmus Farm Supply for up-to-date bookings, balance overviews, invoices, statements and payment details.

Interested in more information? Contact your AFS agronomist today!

Asmus Farm Supply

Since 1960, we have provided our customers with quality ag products and services. We take care of all your agriculture needs from crop protection, plant nutrition, seed and seed treatment. All of our Agronomists are C.C.A certified and uphold integrity and trust with each of our growers. Not only are our agronomists certified, but they also come from family farms and can speak from experience. Let us be a partner in your operation’s success.
Asmus Farm Supply
Asmus Farm Supply
Tomorrow, February 26th, is National Wear Blue Day for #FFAweek. We encourage everyone to wear blue in support of FFA. AFS will be posting photos of their staff wearing blue with the chance for you to post your photo in the comments. #FFAweek #supportFFA
Asmus Farm Supply
Asmus Farm Supply
FFA has molded many young farmers into the adults they are today. FFA makes a lasting impact on its members by providing them with unique opportunities in agriculture. AFS celebrates #FFAweek with past, present and future FFA members.
Asmus Farm Supply
Asmus Farm Supply
AFS has a Warehouse Opening at the Estherville location! Apply online or in person. Call 712-209-0886 with questions.
Asmus Farm Supply
Asmus Farm Supply
Corteva Agriscience announced Feb 22, 2021 to discontinue sales of FeXapan herbicide. Corteva is not pursuing Federal or state registrations, making application of FeXapan illegal to spray in 2021! Please contact you AFS Agronomist with any questions regarding FeXapan.
Asmus Farm Supply
Asmus Farm Supply
The AFS Photo Contest is open until Sunday, February 28th. Make sure to get visit the site to get your photos entered. Visit https://forms.gle/ThRH4YVxSFnnuFAu5 to enter today! Six winners will be chosen and each will receive a $50 Visa gift card.
Asmus Farm Supply
Asmus Farm Supply
Estherville is hosting an informational meeting on Tuesday, Feb 23rd on products offered by Quality Liquid Feeds. If you’re interested in attending this meeting, registration is required by Monday. Please contact the Estherville office to reserve your seat.


In the late 1950’s, Harvey Asmus introduced a new way to farm. Chemical weed control was not a foreign concept, but it certainly wasn’t adopted by the masses. Regardless, Harvey believed in the future of farming and stood with his clients from planting through harvest and made a commitment to helping their operation succeed. Within the first decade of it’s existence, Asmus Farm Supply flourished in the new era of farming.

At Asmus Farm Supply, selling is more than just price. We commit to building personal relationships with each of our customers through face-to-face business. We strive to listen to your production problems, and through our product knowledge, recommend a program that is tailored to your needs.

Family Oriented

Asmus Farm Supply was founded on family. Without the support it took from our family members, we wouldn’t be where we are today. A majority of farms are multi-generational and we know the value that each individual holds when it comes to making your operation run. The Asmus Family Farm and business has been family owned and operated for the last three generations, so when you walk in our door, know that you will be treated like family with a warm welcome.

Mission Statement

“Consulting Clients with Sustainable Recommendations to Maximize Production”

AFS is laid on the foundation of giving quality and sustainable recommendations for our growers to not only continue being stewards of the land, but stewards of our neighbors while helping you maximize your yield and crop potential.

“I like working with AFS because they’re very unbiased on the chemicals they push, being such a large dealer and I put a lot of faith in what they recommend.”

Adam from Woden, IA