Colusa County
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Posts Tagged: armyworms

Armyworm vs high temperature blanking

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I was evaluating armyworm injury in plots and noticed there was quite a bit of panicle blanking not caused by armyworms. When armyworms injury panicles, they feed on the rachis of panicle branches, causing those branches to dry out....

Posted on Friday, August 25, 2017 at 8:41 AM
Tags: armyworms (12)

Armyworm 2017 update


Number of moths trapped per day is increasing. Numbers are higher in areas where crop diversity is higher. I haven't seen any worms yet, but they are expected by the end of the month. At this point, moths may be mating and laying eggs on weeds and...

Posted on Wednesday, June 7, 2017 at 11:35 AM
Tags: armyworms (12), arthropods (11)

Armyworm Trapping 2017

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I have set up seven armyworm pheromone traps in the Sacramento Valley, and Michele Leinfelder-Miles is monitoring one trap in the Delta. Last year the traps showed a distinctive peak mid August, when worms started causing problems during heading. This...

Posted on Friday, May 26, 2017 at 3:05 PM
Tags: armyworms (12), arthropods (11)

Armyworm Moth Flight Update

Moths per trap

This year, armyworm infestations were not as severe as last year. Populations did not reach the very high numbers of 2015, but they were early. Growers and PCAs were scouting diligently, and were able to recognize infestations when the worms were small....

Posted on Tuesday, July 19, 2016 at 4:04 PM
Tags: armyworms (12), arthropods (11)

Time to scout for armyworms

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Earlier this week, I received reports of two fields near Willows that showed evidence of armyworm feeding and very small worms in the plants. Today, I sampled a field that had some severe armyworm affected areas last year. At first sight, there was no...

Posted on Friday, June 10, 2016 at 5:22 PM
Tags: armyworms (12), arthropods (11)

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