Lep Monitoring Network Update –Trap Count Updates

Agrotis ipsilon - Black Cutworm, curled - major crop pest.

Black cutworm

The majority of counties monitoring for black cutworm (BCW) reported low numbers (less than 10 moths per trap) over the past week, May 30th through June 5th, with the exception of Madison county, which reported a total of 14 moths (Figure 1). Wayne and Muskingum counties both reported 0 moths in their traps over the past week. Black cutworm traps continue to have the highest trap averages across the state.

Black cutworm moth map

May 30 – June 5, 2022

Figure 1. Average black cutworm (BCW) moths captured from May 30th to June 5th. 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.

Figure 1. Average black cutworm (BCW) moths captured from May 30th to June 5th. 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 remain low in the monitoring counties; however, the number of counties reporting moths has increased over the past week (Figure 2). All counties reported AMW moths except Brown, Clark, and Trumbull. Similar to last week, no counties are reporting AMW numbers above an average of two moths per trap.

True armyworm moth map

May 30 – June 5, 2022

A picture containing map

Description automatically generated

Figure 2. Average true armyworm (AMW) moths captured from May 30th to June 5th. 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

The third week of monitoring for European corn borer (ECB) resulted in low trap numbers for all monitoring counties (Figure 3). Currently, Fulton, Wood, Putnam, Hardin and Madison 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

May 30 – June 5, 2022

 Map

Description automatically generated

Figure 3. Average European corn borer (ECB) moths were captured from May 30th to June 5th. 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.