Lep Monitoring Network Update – BCW, AMW, and ECB Updates

European Corn Borer larvae

Moth trap updates for Ohio are reported below. All monitored pests remained below an average of 10 moths per county for the week of June 6 – 12. This will be our last update for black cutworm and true armyworm. We will continue to report on European corn borer catches and begin reporting on corn earworms starting next week. Western bean cutworm reporting will begin the week of June 27th.

Black cutworm

Black cutworm (BCW) numbers remain low in all monitoring counties (less than an average of 10 moths per trap) for the week of June 6th through June 12th (Figure 1). The highest weekly average was reported in Hardin County with an average of 8.7 moths.

Black cutworm moth map

June 6 – 12, 2022

 Map

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Figure 1. Average black cutworm (BCW) moths were captured from June 6th through June 12th. The large number indicates the average moth count for the week and the small number in parentheses is the total traps set up in the county.

True armyworm

True armyworm (AMW) numbers also remain low in the monitoring counties (Figure 2). All counties reported an average of fewer than 5 moths for the week.

True armyworm moth map

June 6 - 12, 2022

 Map

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Figure 2. Average true armyworm (AMW) moths were captured from June 6th through June 12th. The large number indicates the average moth count for the week and the small number in parentheses is the total traps set up in the county.

European corn borer

We are in our fourth week of monitoring for the European corn borer (ECB), which continues to result in low trap numbers for all monitoring counties (Figure 3). Currently, Fulton and Hardin counties are the only counties reporting ECB moths. All counties reported less than an average of 2 moths per trap.

European Corn Borer moth map

June 6 - 12, 2022

  Map

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Figure 3. Average European corn borer (ECB) moths were captured from June 6th to June 12th. The first number indicates the average ECB-IA followed by a comma and then the average ECB-NY moth count for the week. The small number in parentheses is the total traps for each species set in each county.

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.