Original content is great, but sometimes it is unnecessary to reinvent the wheel, or in this case, the YouTube video about armyworm damage in wheat.

We are starting to monitor true armyworm (Mythimna unipuncta) in the PNW, but efforts from Midwest states are much more deliberate because the species can be so damaging to large acreage of grasses and grains.

Today I found this excellent video from Chris DiFonzo at Michigan State University. Chris explains damage to flag leaves, thresholds and how to scout for larvae, and predicted impact on yield. Grab a cup of coffee and watch the 8-minute video here: https://youtu.be/C-Pk0ANkDr4

Cover image of YouTube video

.pdf is NOW AVAILABLE for download .

The full version of:
“ARMYWORMS AND CUTWORMS IN OREGON CROPS:
A comprehensive guide to identification, ecology, and management of common species”

is expected to be published early summer, and will include more species, as well as notes on scouting, host plants, activity in the landscape, etc.

This is a huge group to try and summarize, so if you have thoughts or questions about certain species, feel free to leave a comment!

Regional trapping in Tillamook county has been ongoing for 6 weeks. We’ve recently begun to incorporate GIS maps to make it easier for program leaders and participants to visualize ‘hot-spots’ of armyworm moth activity.

Of 15 total monitoring sites, positive trap counts this week are confined to a 5 mi2 area, centralized around Tillamook city limits. This type of pattern can only be visualized by mapping, and may help focus efforts for further scouting. Fun stuff!

27% of sites had positive trap catches this week. Click on each dot for details. If your site does not show on map, it is a zero.