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Category Archives: Insects

22
Aug
2014
Updated Sugarcane Aphid Distribution
Author: Scott Stewart, IPM Extension Specialist No Comments

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 No Comments

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 No Comments

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 No Comments

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 No Comments
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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14
Aug
2014
Cotton Insects – Nearing the End
Author: Scott Stewart, IPM Extension Specialist No Comments

The bollworm flight has begun in many areas. A general decline in plant bug populations is being observed, but stink bugs continue to linger. Some fields of cotton have now reached a maturity where we should and have terminated insecticide applications for plant bugs, stink bugs and bollworms. For later maturing fields, it may still be necessary to manage pest infestations for a Continue reading

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14
Aug
2014
Update on White Sugarcane Aphid in Sorghum
Author: Scott Stewart, IPM Extension Specialist 3 Comments

I wrote an article last week about a find of white sugarcane aphids in Madison County. Aphids have now also been found in Shelby and Dyer Counties, so it seems likley they could be found in any sorghum field in west Tennessee. I must emphasis that overall populations are very low and don’t appear to Continue reading

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11
Aug
2014
Corn and Soybean Field Day – Today (8/19/14)
Author: Heather Young Kelly, Extension Plant Pathologist No Comments

Don’t forget the UT corn and soybean field day today at the Research and Education Center in Milan (3 Ledbetter Rd, Milan, TN 38358). Registration opens at 9:00 and tour will be begin at 9:30 a.m and will conclude with lunch.

Information on corn and soybean diseases, insects, and weed management, as well as agronomic information will be presented. Pesticide re-certification and CCA CEUs will be available.

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05
Aug
2014
White Sugarcane Aphids Found in Tennessee Sorghum
Author: Scott Stewart, IPM Extension Specialist Comments Off

The white sugarcane aphid (WSCA) has made it well into Tennessee. On August 5th, I found relatively low populations on heading grain sorghum within the city limits of Jackson. The previous nearest find to Tennessee was in northern Mississippi and across the river from Memphis (Crittenden Co., AR). Thus, it is conceivable this insect could show up in any sorghum field in West Tennessee. It is important that everyone start scouting for this insect and report suspected infestations. Continue reading

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05
Aug
2014
Save a Spray, Record NAWF=5 (Cutout)
Author: Scott Stewart, IPM Extension Specialist Comments Off

Nodes above the uppermost first position white flower (NAWF) is a well-recognized way to monitor the maturity of your cotton crop. If you record the date of cutout, when there is an average of 5 nodes above this white flower, you can start counting down the days until insecticide applications for some insect pests can be terminated. Continue reading

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31
Jul
2014
Cotton Insects – Be Prepared to Spray
Author: Scott Stewart, IPM Extension Specialist Comments Off

I did a pretty through job in last week’s article about addressing insecticide treatment options in cotton. We’ve been collecting a lot of data this week in our trials, primarily targeting plant bugs, and I’ve seen nothing to change my opinions. The top performers list include Acephate/Orthene, Transform and Bidrin in tests with many tarnished plant bug nymphs. Various mixes of these products with each other or with a pyrethroid insecticide are also performing well. When you start with the top performing insecticides, it is often the timing and interval of applications that makes the biggest difference in insect control. Continue reading

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30
Jul
2014
Be on the Lookout in Sorghum
Author: Scott Stewart, IPM Extension Specialist 1 Comment

There are several things to be scouting for in grain sorghum. Below are some suggestions and management considerations. Typically, later maturing fields will be at higher risk to head feeding caterpillars and sorghum midge, so be especially mindful if your fields are just now or not yet heading. Continue reading

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