Posted on Apr 27, 2018 by Kelly Estes

Insect Observations/Trap Data for the Week Ending 4/27/18

Spring insect activity is off to a slow start, but is expected to pick up with the recent warming trend.

Piatt, Madison, Montgomery, and Sangamon counties all recorded significant moth flights this week. Projected potential cutting dates are identified in the map below. Remember, these dates are just estimates, scouting should occur before and after the potential cutting dates.

Figure 1. Projected potential cutting dates, April 27, 2018.

 

 

True armyworm numbers have been very low. Armyworm traps are just getting going, so reports for this week are broken down into a general area of the state.

Figure 2. True armyworm trap counts, week ending April 27, 2018.

 

Matt Montgomery, Pioneer, reported alfalfa weevil activity in Shelby county this week. Degree-day accumulations indicate that early instar alfalfa weevils may be present in the southern third of the state. Injury may consist of pinhole size feeding on the leaves.

Figure 3. Accumulated degree-days for alfalfa weevil, April 25, 2018.

 

As the growing season gets underway, we encourage you to share field observations with both Nick Seiter (nseiter@illinois.edu) and Kelly Estes (kcook8@illinois.edu).

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