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Category Archives: Insects

31
Jul
2014
Cotton Insects – Be Prepared to Spray
Author: Scott Stewart, IPM Extension Specialist No Comments

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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30
Jul
2014
Fall Armyworm in Double-Cropped Soybean
Author: Scott Stewart, IPM Extension Specialist No Comments

There have been several reports of fall armyworms in wheat beans. Fields with weedy grasses or volunteer wheat are especially prone to infestations. The larvae start out on grasses and move to soybean (usually after a herbicide application takes the grass out). However, fall armyworms can sometimes make an appearance even if the fields are not grassy. Continue reading

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26
Jul
2014
Insecticides – So Many Names!
Author: Scott Stewart, IPM Extension Specialist No Comments

By request, I am providing a list of active ingredients and trade names (see below). This does not include all examples. Feel free to make comments about other “generic” trade names you may be using. Please keep in mind that formulations may vary considerably, and thus, rates may need to be adjusted accordingly. Also, not all products be labeled for the same crops. It is your responsibility to follow instructions on the insecticide label. The information below is also available in UT’s insect control recommendations for field crops. Continue reading

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26
Jul
2014
Crunch Time for Insect Management in Cotton
Author: Scott Stewart, IPM Extension Specialist 1 Comment

The next 2-3 weeks is traditionally the most critical window for managing insect pests in cotton. We are setting the bolls that will make or break our crop, and it is harder to recover from significant boll injury than it is to compensate for the loss of early season. This mid-flowering window is the time when immature plant bugs, stink bug, and bollworm infestations may all coincide. Moth traps are beginning to show the onset of our traditional bollworm flight. Continue reading

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24
Jul
2014
Southwestern corn borer flight kicking off
Author: Scott Stewart, IPM Extension Specialist No Comments

This week trapping data is not fully reported at this time, but the second generation moth flight of southwestern corn borer is really picking up in some locations (link here for latest moth trap data). Continue reading

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19
Jul
2014
Proper Nozzle Selection for Pesticide Applications
Author: Shawn Butler, Graduate Research Assistant No Comments

As we get further into the year, bugs begin to enter our fields, disease onset starts to occur, and weeds continue to flourish, our chances of making tank-mixed applications increase. This ultimately makes spray nozzle selection more challenging as most products require different droplet sizes.  Continue reading

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16
Jul
2014
Good News (Kudzu Bug), Bad News (White Sugarcane Aphid)
Author: Scott Stewart, IPM Extension Specialist Comments Off

These are a couple of new pests we need to be on the lookout for. Let’s start with the good news. Continue reading

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16
Jul
2014
Think before pulling the trigger
Author: Scott Stewart, IPM Extension Specialist Comments Off

This article really pertains to insect management to all crops, but I’ll highlight a couple of relevant scenarios. A lot of the comments relate to a common theme. Insect management is often reactive. Spraying too early decreases effectiveness, often increase overall control costs, and unnecessarily select for resistance. Many of our most commonly used insecticides offer Continue reading

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15
Jul
2014
2014 Growing Degree Days as of July 12
Author: Tyson Raper, Cotton & Small Grains Specialist Comments Off

2014bloomBlooms are beginning to become easier to find in West TN cotton fields. It appears first bloom (the period in which 50% of plants have begun flowering) has arrived roughly 7-14 days behind schedule. Our plots here and around Jackson have definitely jumped in the past few days with warmer temperatures and moderately clear skies. Still, the 7 day forecast looks more like May. With that in mind, I’ve collected and graphed the growing degree days (no cut-off temp, base 60) in Jackson, TN for the past 14 years. Continue reading

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14
Jul
2014
Reminder: Milan No-till Field Day This Thursday
Author: Scott Stewart, IPM Extension Specialist Comments Off

Without a doubt, the Milan No-Till Crop Production Field Day is one of the most far-ranging agricultural field days in the nation. The event is a junction for producers with varied farming interests. Tours will cover topics as diverse as row crop sustainability, beef cattle production, natural resource management, unmanned aerial systems and even the compatibility of honeybees and agriculture. Registration is free and begins at 6 a.m. CDT, with the first tours leaving at 7 a.m. A total of 16 tours are on the agenda. Continue reading

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10
Jul
2014
Reminder: Soybean Scout Schools
Author: Scott Stewart, IPM Extension Specialist 3 Comments

UT’s annual Soybean Scout Schools are set for the dates and times below.  These field-side programs last 2-2.5 hours and address general crop management including plant development and management of weed, disease and insect pests. As always, scouting supplies and sweep nets are Continue reading

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