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Agronomic Crops Network

Ohio State University Extension


Lep Monitoring Network Update – Black Cutworm

Black cutworm

We are currently in our second week of monitoring for the black cutworm (BCW, Figure 1).

Traps were checked between May 2 – 8 for the presence of BCW adult moths. Over the past week, a total of 28 traps in 9 counties were monitored. Moth numbers in the majority of monitoring counties have increased over the past week (Figure 2). Both Trumbull and Van Wert recorded an average of greater than 10 moths (Figure 2). Counties with high trap numbers should plan to monitor for BCW larvae after corn is planted, especially in fields with a lot of broadleaf weeds such broadleaf weeds, such as chickweed and purple dead nettle. For more information about BCW please visit:

For corn varieties tolerant of BCW, please review the Handy Bt Trait Table:

black cutworm moth

Figure 1. Black cutworm moth (BCW). Distinct black, dagger shaped markings on the forewing (circled in yellow). Photo credit: Curtis Young.

Black cutworm moth report - Week 2 

May 2 to May 8, 2022

black cutworm map

Figure 2. Average black cutworm (BCW) moths captured from May 2nd to May 8th. 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.





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.