Armyworm Monitoring

2026 Armyworm Monitoring Update

Week of August 24

We are past the timing of the second moth flight. Number of moths in the traps have been very low. In the field, I have not been able to find worms or damage. It looks like this  year we won't see any armyworms during heading. 

Line chart: Sacramento Valley moth captures peak ~50 mid-June, fall to near zero by August.

Armyworm trapping results by location

 

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Funding for the trapping is provided by the Rice Research Board and Corteva Agriscience.