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Category Archives: Insects

18
Sep
2014
Final Bug Thoughts
Author: Scott Stewart, IPM Extension Specialist No Comments

I’m not sure what a bug thinks, but I don’t think they are deep thinkers. We have that in common, but at least I know we’ve pretty much wrapped up this season in terms of insect control. Below are the last few reminders as we close out this year’s crop. Continue reading

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12
Sep
2014
What’s that white dot on this stink bug?
Author: Sandy Steckel, Extension Assistant Comments Off

Green-SB-tachinid-egg-best-(2)-webActually, that’s an egg.  In fact, it’s the egg of another insect and basically, that stink bug is doomed to an untimely and gruesome death.  That egg is from a Tachinid fly (picture below).  Continue reading

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12
Sep
2014
weather.utcrops.com
Author: Dave Verbree, Crop Physiologist and Agronomist Comments Off

A new tool for tracking weather, heat units, and crop progress

I needed a quick way to view and download weather data from several counties, to determine accumulated heat units for many different planting dates and crops, and to compare against the 30-yr averages for making predictions and crop management decisions. So, I developed a web-based tool with that express purpose. Just point your browser or click-on http://weather.utcrops.com and the rest should be self-explanatory. There is also a Quick Link to this site on the left menu. If you are only interested in counties in Tennessee, you can click on Continue reading

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10
Sep
2014
Cotton Wraps Up, Soybean Insects Build
Author: Scott Stewart, IPM Extension Specialist Comments Off

Cotton:  Making insecticide applications for cotton insects at this late date is not recommended, and most folks have rightly “walked away” from fields and turned their attention to corn and soybean harvest. It is now 25 or more days past the last effective bloom Continue reading

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09
Sep
2014
What is this caterpillar in my net?
Author: Sandy Steckel, Extension Assistant Comments Off

SS-Skipper (7) webThe silver-spotted skipper, Epargyreus clarus, is a butterfly (pictured below) in the insect family Hesperiidae.  It is one of the largest, most widespread and commonly recognized skippers in North America.  The wing span of an adult may reach 2.4 inches.  Wings are brownish-colored with a median row of yellowish-gold spots on the forewings and a large, median, irregular-shaped patch of white on the hind wings.  Wing fringes are dashed with white.  Antennae are hook-tipped.  Skippers are well known for their rapid, Continue reading

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03
Sep
2014
Fall Armyworm Onslaught Continues
Author: Scott Stewart, IPM Extension Specialist Comments Off

Fall armyworms attack a wide range of grasses and other crops. Outbreaks have been reported on soybeans, sorghum, pastures and several other crops for over a month. We are having a biblical year with fall armyworm, especially in pastures and lawns. However, many are also wandering into the edges of soybean fields. My colleague, Dr. Frank Hale, recently sent the following information. Continue reading

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24
Aug
2014
2014 University of Tennessee Cotton Tour
Author: Tyson Raper, Cotton & Small Grains Specialist Comments Off
 
22
Aug
2014
Updated Sugarcane Aphid Distribution
Author: Scott Stewart, IPM Extension Specialist Comments Off

Below is the updated, known distribution of sugarcane aphids in 2014, including confirmed finds on sorghum in Tennessee. This aphid is certainly present in at least low numbers in other areas. The second map shows the distribution of this invasive pest in 2013, showing the impressive spread Continue reading

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22
Aug
2014
Moth Trapping Report (Corn Earworm are Flying)
Author: Scott Stewart, IPM Extension Specialist Comments Off

This will be the last week that moth trapping data will be reported (link here).  Results from last week indicate the the corn earworm (bollworm) flight has finally kicked off, but trap catches last week varied considerably from 2 – 213 moths per trap.  The hot spots appear to be Continue reading

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20
Aug
2014
General Insect Situation
Author: Scott Stewart, IPM Extension Specialist Comments Off

Insects are predictably unpredictable, but some general observations for this current week are below. Continue reading

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18
Aug
2014
Section 18 Granted for Transform in Sorghum
Author: Scott Stewart, IPM Extension Specialist Comments Off

I am pleased to announce the fast action of the Tennessee Department of Agriculture and the EPA in approving a specific exemption allowing the use of Transform WG for the control of sugarcane aphids in sorghum.  Some specific label requirements are below. You may view the complete authorization letter here. Continue reading

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14
Aug
2014
Stink Bugs Ramping Up in Soybean
Author: Scott Stewart, IPM Extension Specialist Comments Off
Immature green stink bug

Immature green stink bug

Insect infestations have been generally mild in soybean fields thus far, but as usual, I am starting to get more calls about stink bugs and a few other pests. As other crops mature, including early maturing soybean fields, late season insect populations often concentrate in the remaining soybean fields. Let’s not forget to keep our eyes open. This may include corn earworm infestation in our latest maturing fields. Continue reading

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