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Agronomic Crops Network

Ohio State University Extension


Western Bean Cutworm 2017 Trapping and Monitoring Summary

Participators: Mark Badertscher, Lee Beers, Amanda Bennett, JD Bethel, Bruce Clevenger, Sam Custer, Thomas Dehaas, Allen Gahler, Mike Gastier, Jason Hartschuh, Ed Lentz, Rory Lewandowski, Cecelia Lokai-Minnich, David Marrison, Sarah Noggle, Les Ober, Adrian Pekarcik, Eric Richer, Garth Ruff, John Schoenhals, Jeff Stachler, Alan Sundermeier, Curtis  Young, Chris Zoller

We had a successful year trapping and monitoring the western bean cutworm (WBC) in Ohio. We want to thank the extension educators for their time monitoring the traps, as well as the land owners for allowing us to place traps on their property. Overall, 24 counties in Ohio were monitored in 2017; an increase from 15 counties in 2016 (Figure 1). A total of 84 traps were monitored weekly from June 23 through August 25, 2017. A total of 15,117 WBC were trapped over the duration of the monitoring period, with a grand average of 21 moths/trap (up from 16 moths/trap in 2016). The peak week for WBC was July 8th through 14th (Figure 2) with a state average of 69 WBC/trap. Peak weak did vary based off of county; for county specific peak week dates see Table 1 below.

If you are interested in joining our trapping network for the 2018 season, please contact Amy Raudenbush ( for more details.

Figure 1. Map of Ohio counties participating in WBC trapping. Counties highlighted in yellow participated in WBC trapping and monitoring in 2016 and 2017. Counties highlighted in green began monitoring in 2017. Counties in blue monitored in 2016 only. Number within the county represents the average WBC trapped throughout the duration of the season. Click here for map.

Figure 2. Average number of WBC adults recorded in traps in 2016 (blue) and 2017 (red).  Click here for chart.

Table 1. County, peak week and average number of WBC/trap during the peak week in 2017.  Click here for table.



Crop Observation and Recommendation Network

C.O.R.N. Newsletter is a summary of crop observations, related information, and appropriate recommendations for Ohio crop producers and industry. C.O.R.N. Newsletter is produced by the Ohio State University Extension Agronomy Team, state specialists at The Ohio State University and the Ohio Agricultural Research and Development Center (OARDC). C.O.R.N. Newsletter questions are directed to Extension and OARDC state specialists and associates at Ohio State.