2016 University of Minnesota Cooperative Black Cutworm Trapping Network Report #1
Week of March 14 - March 18, 2016
This is the first black cutworm newsletter for the 2016 season. This newsletter is available in a print-friendly pdf format: 2016 Black Cutworm Network Issue 1
The first 2016 black cutworm pheromones traps began operating the week of March 14th. The map shows counties where traps will be located and which ones got off to an early start operating. Thanks to those that will be collecting data this year.
Many of us were optimistic that an early spring was on the way and some veteran trappers were suspecting that we might see some arrivals on a forecast thunderstorm that failed to materialize. However, no moths were captured the first week.
As always, the effect of this year's black cutworm flights into Minnesota will depend on several factors: 1) Black cutworm winter survival in the southern plains, 2) Weather systems to bring moths northward, 3) Timing of spring tillage and early spring weed density with moth flights, and 4) The crops/ hybrids planted.
Little, if any spring tillage has been done in most areas. We are now starting to see some early emerging weeds that cutworm moths find attractive spots to lay eggs. More growers are planning to plant corn without above-ground Bt-traits in the 2016 cropping season. This might change the potential for injury from black cutworms.
Keep tuned for more information in future issues.