All posts by Scott Stewart, IPM Extension Specialist

Wheat, aphids and BYD … it’s that time of year

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Courtesy of Oklahoma State University and USDA-ARS

One of the most consistent yield responses I’ve seen in my time at UT is when a foliar insecticide application is made to wheat at this time of year (late January – late February). An insecticide application, specifically a pyrethroid insecticide, has increased yield by an average of over 5 bushels/acre. Thus, this application has become a fairly routine recommendation. Insecticides can be co-applied with a herbicide or Continue reading

Upcoming Events

January 22, 2019 – Fayette/Hardeman County Extension Crop Production (Lone Oaks Farm, Middleton, TN) 10AM-12PM (Contact Jeff Via or Josh German for details)

January 23, 2019 – Tipton County Extension Crop Production (Farm Bureau Office, Covington, TN) 9AM-12PM (Contact Becky Muller for details)

January 25, 2019 – Gibson County Extension Crop Production (1252 Manufacturers Row Trenton, TN 38382) 8AM-2PM (Contact Philip Shelby for details)

January 28, 2019 – Haywood County Extension Crop Production (H&R Agripower, Brownsville, TN) 10AM-12PM (Contact Lindsay Griffin for details)

January 29, 2019 – Crockett County Extension Crop Production (Gibson Electric, Alamo, TN) 7:30AM-11AM (Contact Richard Buntin for details)

February 5, 2019 – Middle Tennessee Grain Conference (Coffee County Fairgrounds, Manchester, TN)

February 7, 2019 – West Tennessee Grain and Soybean Conference (Dyersburg, TN)

February 15, 2019 – Cotton Focus (West Tennessee Research and Education Center, Jackson, TN) … 8 AM-12PM (lunch provided, pre-registration is not required)

February 20, 2019 – Tennessee Agricultural Production Association Winter Agronomic Workshop (DoubleTree Hotel, Jackson, Tennessee)


Cotton and Soybean Insect Update

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Cotton: Much of our cotton is within 7-10 days of when insect controls can be terminated, and it looks like this cotton may outrun the bollworm moth flight in many areas. Most the bollworm action appears to be pretty moderate and still primarily concentrated along the Mississippi River and south of I-40. Having said that, we are some seeing bollworm larvae slip through on Bollgard 2, WideStrike, and TwinLink varieties. It’s a numbers game. Continue reading

Cotton – Thinking Ahead About Bollworms

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It is uncertain how big our moth flight will be this year. As usual, bollworm moth catches have been generally low to this point. However, you can expect activity to slowly increase, with a peak in moth activity occurring the last week of July and the first week of August. With the decreasing efficacy of pyrethroid insecticides and increasing tolerance to some Bt toxins, you should plan on using Continue reading

Cotton – Crunch Time for Plant Bugs and Stink Bugs

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Now through the end of July is the critical time to manage infestations of plant bugs and stink bugs. Of course it varies considerably, but we are seeing more consistent infestations of plant bugs. Stink bugs have made a come back after very low populations last year. Clouded plant bugs are also a bigger part of the mix this year in some areas. I prefer the drop cloth during this time frame, using a threshold of 3 tarnished plant bugs on a drop cloth as the treatment threshold. As a rule of thumb, Continue reading