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University of Minnesota Extension

Extension is expanding its online education and resources to adapt to COVID-19 restrictions.

Crops current issues and highlighted resources

Summer weather impacts

Hail damage

Wind and hail damage to pollinating corn

Guidance on how to manage damage from strong winds and hail when tassels are just starting to become visible or when corn has partially or completely been pollinated.

Hail damage to soybean crops

How to assess crop damage and potential yield loss after hail. 

Digital Crop Doc

The UMN Extension crops team is launching a new program to help you with disease diagnosis in several crops:

  • Corn
  • Soybean 
  • Small grains
  • Sugarbeet
  • Forages

Visit Digital Crop Doc, tell us more about your field situation and submit photos. After you submit the form and photos, one of our team members will contact you with a diagnosis, a request for more information or a suggestion to submit the samples to a plant disease clinic.  

Emerging issues 

Soybean gall midge

Soybean gall midge on Minnesota soybean

Soybean gall midge is a new pest of Minnesota soybean. It was first identified in Rock County in August, 2018 and since then has been found in several counties in southwestern Minnesota. Learn about:

  • Identification
  • Life cycle
  • Impacts on soybean
  • Scouting and management

Palmer amaranth

Preventing Palmer amaranth in Minnesota

  • Why it's a threat.
  • Identifying Palmer amaranth.
  • How to handle infestations.
  • How it spreads.
  • Prevention.
  • Management.


Highlighted resources 

Insecticide options for resistant soybean aphid

Insecticide rotations are an important part of insecticide resistance management for pyrethroid-resistant soybean aphid. Learn about suggested rotation options when the treatment threshold has been reached:

  • Suggested insecticide groups for the 1st foliar application depending on whether or not a seed treatment was applied.
  • Re-treatment suggestions based on 1st foliar application and seed treatment.

Herbicide mode of action and sugarbeet injury symptoms

  • In depth information on eight herbicide families
  • Injury photos for individual herbicides within each of the families

How to do research on your farm

  • How to set up your experiment.
  • How to interpret your results.
  • Tips for successful on-farm research.

Reviewed in 2020

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