PFI Field Day-Weed Control Strategies in Organic Corn and Soybeans w/ Buffalo Equipment

Join lifetime PFI member Ron Rosmann, Eric Madsen of Audubon, Iowa, and cultivator specialist Dale Kumpf as they discuss all aspects of Buffalo cultivators and planters. During the event, Ron and Eric will share their organic weed control experiences and cultivator know-how while showcasing their Buffalo equipment. Learn how to improve cultivator settings and fine-tune a planter, and see a cultivator in action. Though Buffalo equipment is featured, concepts and strategies discussed will be relevant to any high-residue cultivator. Kathleen Delate will talk about weed control and crop rotations in organic systems.

Rosmann Family Farms is a multi-generational diversified crop and livestock operation on 700 acres of certified organic land. The farm consists of cattle, hogs, egg layers and a range of crops, including popcorn, soybeans, corn, small grains, hay and pasture, annual forages and cover crops. Maria operates the farm store, Farm Sweet Farm. Ellen and Daniel operate FarmTable Delivery and a restaurant, Milk & Honey in Harlan, featuring local foods.

Eric Madsen raises organic crops and livestock with his parents, Vic and Cindy, and will join Ron during the field day to provide additional perspective on mechanical weed management.

At this in-depth organic field day, there is plenty to see and learn, don’t miss it!


  • Kathleen Delate – ISU Extension & Outreach
  • Dale Kumpf – Global Equipment Company
  • Olga Reding – Iowa Organic Association

See & Discuss:

  • Buffalo cultivators and equipment
  • Oat stubble cultivation
  • Fine-tuning planter and cultivator settings
  • Weed control strategies for organic corn and soybeans
  • A cultivator field demonstration
  • Weed control and crop rotation

Meal Information: Lunch will be provided following the field day.


For more information or to RSVP for this field day, please REGISTER HERE.

***IOA is a proud sponsor of this PFI Field Day.***


August 02, 2022 at 1:00pm - 4pm
Rosmann Family Farms
Harlan, IA 51537
United States
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