Search Results for: winter cutworm
Winter Cutworm Update
Winter cutworm is a new pest threat in this region. It has a wide host range and can be very destructive because it moves and feeds in large masses, similar to armyworms. As the name implies, cutworms are active during the winter, and therefore can affect perennial and fall-seeded crops including legume and grass cover… Continue reading
Winter and also SPRING cutworm
The arrival of Spring brings with it opportunity to discuss Noctua pronuba and its potential to affect this year’s plantings. The extremely WET winter and recent mild temperatures mean that cutworm pressure could be higher than normal this year. As seen in the figure below, crop damage can occur throughout the winter, AND ALSO INTO… Continue reading
Large Yellow Underwings are on track
…Over the past 2 weeks, I have started to detect Noctua pronuba in pheromone traps. There is a commercial lure available, and I have some of those deployed currently, but honestly, have just as good of luck tracking them as non-targets in other armyworm traps. In 2017, there were 2 apparent activity periods, which matches… Continue reading
Devastation Imminent
AUGUST 2018 – EDITS to the original (FEB 2018) post Ok, now that I’ve got your attention… The subject line is a playful way to introduce you to Apamea devastator, although the damage it can do is no laughing matter. This species overwinters as mature larvae, and I found some south of Corvallis just last… Continue reading
Large Yellow Underwings Found in Traps
This week, there were Noctua pronuba moths found in traps throughout the valley. Although we are not specifically trapping for them at this time, their presence should be considered a cautionary tale. As we know from years past, where there is one, there are many. This moth is easily recognizable by 3 main features: Large… Continue reading
Gallery / Slideshow
Cutworms and Armyworms of the PNW: Mythimna unipuncta, Dargida procintus, Dargida diffusa, Spodoptera praefica, Mamestra configurata, Apamea cogitata, Peridroma saucia Slides advance ~ e. 5 seconds. Hover mouse to pause [slideshow_deploy id=’102′] Scientific Name: Noctua pronuba Common Names: Large Yellow Underwing (adult) Winter Cutworm (larvae) Slides advance ~ e. 5 seconds. Hover mouse… Continue reading
Fall flight
Now that Fall has officially begun (Sept. 22nd), it’s time to start talking about potential for damage to fall and winter crops from Noctua pronuba, the winter cutworm. According to limited data of N. pronuba activity in this region, there seem to be two flight periods – early spring (Mar-May) and now (Aug-Oct). Adult moths… Continue reading
Identification
Proper identification of cutworms and armyworms can be difficult. Most of them hide in the soil during the day and are hard to find. The identifying characteristics mentioned here may not be as prevalent on younger specimens. NEW: A downloadable QUICK GUIDE of is available at: beav.es/Zpk. If the specimen is a cutworm or armyworm,… Continue reading
Fall Armyworm or Just…Armyworms in Fall?
The common name ‘armyworm’ is added as an identifier based mostly on behavior. Larvae move in large groups, sometimes over quite impressive distances. In severe cases, a feeding wave can be seen, like the front line of an advancing Army. Taxonomy (the science of grouping and naming organisms) can be equally important though. Of the… Continue reading