The fall armyworm outbreak of 2021 is going to be one to remember. My colleague, Dr. Gus Lorenz in Arkansas called it “epic”. We knew something was different this year when another colleague in Texas, Dr. David Kerns, gave us a warning over a month ago. So what’s different? First, the fall armyworm flight is several weeks early, second, larval infestations have been unusually high, and third, for whatever reason, control with pyrethroid insecticides has been unusually poor (ranging from sometimes acceptable to a complete failure).
A reminder the Thrips Infestation Predictor for Cotton described in the article below, published last year, is still available for use. However, the link has changed to https://products.climate.ncsu.edu/ag/cottontip/.
The Thrips Infestation Predictor for Cotton is a useful tool for predicting whether a foliar insecticide application is needed for thrips control in cotton. It uses local weather data in association with a user defined planting date to estimate the size of the local thrips population, the susceptibility of seedling plants, and thus, the risk of thrips injury. The model is for tobacco thrips, by far the most common species infesting cotton in Tennessee. Continue reading
If you haven’t noticed, our UTcrops.com website has gotten a facelift. You may not recognize it when you first visit us at https://utcrops.com/. However, it’s organized similarly to the old version. I’m sure there are a few bugs that need to be fixed, but take a look! This site gives you ready access to essentially all UT resources related to row crop production.
As corn harvest begins and we start finishing off the cotton crop, it’s hard to find time to keep up the good fight on soybean insect management. But make no mistake that late August through September is the most critical time to scout and manage insects in late maturing soybean! Continue reading
Sometimes there is no substitute for scouting. Spraying based on rumor or what your neighbor does will get you in trouble (or waste money). I predicted a relatively large corn earworm (bollworm) moth flight, but the average trap catches don’t support that. Having said that, there are definitely pockets of bollworms in late soybean and more widespread issues in cotton. Cotton maturity is all over the board depending on planting date, variety, and field conditions. The most mature cotton is Continue reading
Although current moth activity remains relatively low, I’m expecting a peak of moth activity sometime beginning around August 5th through 10th. Bollworm (a.k.a., corn earworm) poses a significant threat to cotton and soybean, and particularly late planted soybean that are still flowering when the flight arrives. Below are some thoughts on managing for this troubling pest. Continue reading
Please see the authorization letter linked below which allows the use of Sivanto (flupyradifurone) for control of sugarcane aphids in sweet sorghum. This product is already registered for use in grain sorghum. The authorization letter lists restrictions for the use of this product. Thanks to the EPA for once again granting this section 18 exemption.
Follow the link below to experience the 2020 Milan No-till Field Day at your own pace! You can watch an entire tour by clicking on its name, or just one presentation by clicking on a specific title.
Please note, all links will open in a new tab. Closed captions are available by clicking the “CC” button on the right side of the video’s play bar.