Armyworm

Late June Armyworm Monitoring Update

Late June Armyworm Monitoring Update

The following update is from University of California Cooperative Extension Rice Farm Advisor, Luis Espino:

Week of June 29

On average for the Valley moth captures are going down. In a few fields moth captures are still increasing. The peak of larval activity occurs a week after the peak of moth catches, therefore right now we are seeing worms in the field. In two fields I checked, I found 10 large worms per 10-minute search. In these fields, defoliation was limited to lower leaves and does not warrant a treatment. Other fields had much lower number of worms.

I have asked a few PCAs about worm activity, and all report that worm numbers are low and defoliation small. However, worm activity will continue for another week, so keep monitoring.

For more information, click on the link below for the Armyworm Monitoring Website.

Link:   http://rice.ucanr.edu/armyworm_traps/

Photo credit: Luis Espino 

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Highest Armyworm Numbers Expected Soon and Inspection Tips

Highest Armyworm Numbers Expected Soon and Inspection Tips

The University of California Cooperative Extension (UCCE) says the next several days will be critical for growers to monitor their fields, and potentially make any necessary treatment decisions, as armyworm numbers will be at their highest very soon.

As expected, moth numbers peaked last week. Utilizing annual trend data and on-site monitoring, the UCCE says worms in the field will peak this week and next.

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