Category Archives: Insects

Moth Trapping Update

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A reminder that moth trap catches are reported weekly for corn earworm (bollworm), tobacco budworm, and southwestern corn borer. You can find these data under the Quick Links menu of this web site which takes you to the link below.
http://www.utcrops.com/BlogStuff/2020MothTrappingData.pdf

Corn earworm (bollworm) moth

We are also seeing an increase in bollworm moth catches. I’m hopeful many of these moths will target later corn rather than cotton or soybean, but Continue reading

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Recording of 2020 UT Soybean Scout School

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Below is a link to the recorded presentation of the 2020 UT Soybean Scout School that was presented today via Zoom. Set aside a little time if you intend to watch. Also keep in mind that much of the same information is available on our other internet resources including http://utcrops.com/soybean/VSSchool.htm and https://guide.utcrops.com/soybean/.

Recording of Soybean Scout School (1h 46 min)

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Call of the Week: Hot Topics with Larry Steckel & Scott Stewart

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Weed management is dominating calls to UT Extension specialists this week. Larry Steckel answers those frequently asked questions in this episode. Scott Stewart joins him to discuss insect management issues to look out for as we enter July. Listen.

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Reminder – UT Soybean Scout School via Zoom (July 8th, 9:00 AM – 11:30 AM)

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Because of restrictions due to the COVID-19 situation, the UT Soybean Scout School will be offered by Zoom from 9:00-11:30 AM on Wednesday, July 8th. The Zoom link is provided below.  However, a password is required. Please contact Ms. LaDonn Kelso (dkelso2@utk.edu) or myself (sdstewart@utk.edu) to obtain the meeting password.

The Soybean Scout School provides training for understanding soybean growth and development and the identification, scouting and basic management of pests including insects, weeds, and disease. Pesticide re-certification points and Continue reading

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A Brief Insect Update (June 25, 2020)

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Tarnished plant bug (adult)

It’s been a generally quite week for insect problem but below are some reminders and suggestions.

Cotton:  Most cotton is past the stage where thrips are a concern.  Tarnished plant bugs will now be our primary focus for much of the season. Thus far, most reports indicate a slow and sporadic start with plant bugs, but treatments are now being made more widely.  However tempting, I encourage people to avoid using Continue reading

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Early Season Management of Plant Bugs in Cotton

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Note the abscission scar left by shed square at the second position fruiting site

Below are a few reminders as much of the crop will begin squaring in the next week. It’s too soon to know what kind of plant bug year we will have, but there are a couple of truism that generally hold. When we have a wet spring, and particularly a cool spring, infestations in cotton often start a little later than normal. The weedy hosts of tarnished plant bug will stay attractive longer, holding the bugs longer before they migrate into cotton. However, we often since higher than normal populations during mid and late season under the same circumstance. Second, Continue reading

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Moth Trapping Data and Southwestern Corn Borers

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SWCB moth

Just a reminder that moth trapping data are collected weekly and reported on this website under the Quick Links menus (http://www.utcrops.com/BlogStuff/2020MothTrappingData.pdf). Moth catches of bollworm (corn earworm) and tobacco budworm are low, typical of this time of year.  However, southwestern corn borer traps in some areas are pretty high. For those with non-Bt corn, this is a cause for concern in those areas (and perhaps others). This first generation will be found feeding within whorls until they begin stalk tunneling. You can read more about their management by Continue reading

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Cotton Insect Update … Thrips Be Rolling

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Severe thrips injury on untreated cotton

It’s been a challenge getting our crops in the ground, and our planting dates are really stretched out. It is especially important that our late planted cotton gets off to a good start to make up for a little lost time. Unfortunately, the ‘Thrips Infestation Predictor for Cotton’ (https://climate.ncsu.edu/cottonTIP) appears to be dead on in predicting our heaviest thrips pressure will occur in early June, just as our later planted cotton is most susceptible. I’d suggest making an insecticide application to Continue reading

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