Ten Counties on WBC Scout List as Statewide Numbers Begin to Decrease

Western bean cutworm (WBC) trap counts for the week of July 27 – August 2 show a downward trend in the majority of monitoring counties. Despite the overall decrease in WBC numbers, ten counties are currently at the threshold (an average of 7 or more) indicating to scout for egg masses including, Ashtabula, Fulton, Geauga, Henry, Huron, Lucas, Sandusky, Wayne, Williams and Wood. A total of 27 counties monitored 87 traps, resulting in 418 WBC adults (a statewide average of 4.8 moths per trap) (Figure 1). Monitoring for WBC moths will continue in many counties until the end of August.

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Figure 1. Average Western bean cutworm adult per trap followed by total number of traps in the county in parentheses for week ending August 2, 2020.

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.