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University of Minnesota Extension

Extension is expanding its online education and resources while in-person events and classes are canceled.

Crops current issues and highlighted resources

Spring weather impacts

Frosty forecast for May

Impact of low temperatures on the spring crop. This article discusses factors for you to consider by crop stage:   

  • Crop has emerged.
  • Crop has been recently planted. 
  • Crop is still in the bag.

Cool and dry forecast: How does that impact weed control?

The most recent monthly outlook from the National Weather Service Climate Prediction Center indicates drier than normal conditions with below normal temperatures into the first several weeks of May. What does this scenario mean for weed control? 

  • Timely rains for timely control. 
    • Why soil moisture is important for preemergence residual herbicide activation.
  •  Importance of layering preemergence herbicides with early planting dates.
  • Key considerations for 2020.

Cover crop termination

Spring management of cover crops

  • Guidance on mechanical and chemical termination, including carbon-to-nitrogen ratios of common crops.

  • Factors affecting residue.

  • Pest management tips.

  • How to time spring termination for cash crop planting.

Top 3 tips for cover crop termination

Meaghan Anderson, Field Agronomist with Iowa State University Extension and Outreach, shares the top 3 considerations for terminating cover crops in the spring.

This webinar was first in a 5-part series for farmers, ag professionals, Extension personnel and other interested parties. The series was a collaboration between Iowa State University Extension and Outreach and University of Minnesota Extension.

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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