2020 UMN Cooperative Black Cutworm Trapping Network Report #4
Report #4 Week of April 18 - April 24, 2020
For more information: Black Cutworm Reporting Network
April 30, 2020
Wow, what difference from last year. Depending on the area, many growers are finished or nearly finished with corn planting and some have finished soybeans as well. Additionally, black cutworm (BCW) moth arrival is delayed with respect to planting progress this year. Both of these factors are favorable for crop production.
This past week more traps indicated migrating black cutworm (BCW) moths arriving in Minnesota but numbers at each positive location were still very low (Figure 1).
A Rock County trap was the exception with two moths on 4/21 and then four more on 4/23. However, these are still below the numbers typically associated with an outbreak flight. A Steel County trap had two moths the morning of 4/24. All other traps captured single moths.
Date County with capture
April 19 Freeborn, Murray
April 20 Jackson, Olmsted,
April 21 Jackson, Lincoln, Rock -2
April 22 Jackson
April 23 Brown, Jackson, Martin, Rock-4,
April 24 Lac Qui Parle, Lincoln, Martin, Murray, Steele -2
Make a note of when fields were worked and planted. We will see addition captures April 25- 28. Based on the weather patterns, I don’t expect any of these to be significant but… I always leave some room for surprises when predicting.
Next we’ll discuss how these trap results, combined with planting date and hybrid selection can aid in scouting.
Bruce Potter and Travis Vollmer
This project is supported, in part, by the farm families of Minnesota and their corn check-off investment.