Posted on May 15, 2019 by Kelly Estes

Insect Trapping Update: May 15

Cooperators around the state are monitoring black cutworm and true armyworm traps this spring.

 

Black Cutworm

Continued flights have occurred this last week, but at low levels overall. Reports of corn emergence have been trickling in and along with those reports are also those of black cutworm feeding. As a reminder, some management suggestions from Nick Seiter’s 2018 article (http://bulletin.ipm.illinois.edu/?p=4151):

Projected potential cutting dates in Illinois based on black cutworm trap catches. Pinhole feeding in southwestern Illinois (photo courtesy of Kelli Bassett, Pioneer) and cut plant found in Hancock County (Stephanie Porter, Golden Harvest).

 

True Armyworm

Sporadic flights seen again this week. Numbers were overall low, with the exception of Bureau county. This is just a selection of sites to give you an idea regionally what is going on around Illinois. I have had reports of armyworm in wheat in southern Illinois – varying larval instars and densities.

True armyworm trap totals from selected sites in Illinois. Reports of armyworm in wheat of varying sizes and densities (Robert Bellm, Brase Farms).

 

Despite the cool temps and rain, insects are still out there and scouting will be key. Feel free to share field observations with us – kcook8@illinois.ed or nseiter@illinois.edu

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