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ISA seeking participants for two field studies

Article cover photo
Rich Stessman, ISA On-Farm Network operations manager, checks a sticky trap for a study that monitors corn rootworm beetle populations. (Photo: Joseph L. Murphy/Iowa Soybean Association)

By Carol Brown, ISA environmental communications specialist

The Iowa Soybean Association (ISA) On-Farm Network® is looking for farm fields for a study in iron deficiency chlorosis in soybeans. The team is working with a company to compare healthy areas against areas that could be deficient.

“We would like to find six or more fields to pull small soil samples for this study by the end of June,” said Rich Stessman, ISA On-Farm Network operations manager. “The samples are really small, and the farmer or landowner doesn’t need to do anything beyond providing the location of the field.”

The team would prefer fields in central or north central Iowa. Stessman said they can’t promise any solid results to the farmer, as the project is in its infancy. The corporate partner supporting this project seeks to discover correlations between soil microorganisms and the problematic areas of fields with high pH. The farmers who volunteer their fields are helping to advance the science behind this soybean issue.

For more information, email or just email the GPS coordinates of the field.

Corn rootworm field trials

On-Farm Network is also seeking participants for a corn rootworm study again this crop season.

This summer marks the fourth year the team has monitored corn rootworm beetles across the state. Together with corporate partners, the team is seeking to detect any patterns of resistance that may be evolving in beetle populations in Iowa and across the Corn Belt.

The study will run from mid-July to early August. Eligible fields are those planted prior to June and not scheduled to be sprayed with insecticide before August 10. Farmers who want to participate should download, complete and email the enrollment form to for eligible fields which includes details such as location, planting date, hybrids, insect traits and more.

The On-Farm Network team will take care of the rest. They will site the field, place and collect the sticky traps that catch the corn rootworm beetle. Farmers will be notified if counts are high. Please contact an ISA regional agronomist with questions. This study is not funded by the soybean checkoff.

Contact Carol Brown at

For media inquiries, permission to republish articles or to request high-res photos, please contact Katie James, ISA Public Relations Manager at © 2020 Iowa Soybean Association. All rights reserved.