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
Having done several scout schools this past week and spending some time on the phone, there doesn’t appear to be any major insect pest problems in soybean at this time. However, it is also clear that stink bug populations have rebounded from last year. Some early maturing fields are above the suggested treatment threshold of 9 stink bugs per 25 sweeps. Most are green stink bugs, and Continue reading
UT Extension will be hosting three Soybean Scout Schools during July. Final details will be announced later, but these field-side programs last approximately 2.5 hours and cover the basics of soybean growth, scouting, pest identification, and general management. Pesticide recertification and CCA CEU points will be available. Scout Schools are offered free of charge with sponsorship from the Tennessee Soybean Promotion Board. Registration is not required. Participants will receive a scouting notebook and a sweep net while supplies last.
- Friday, July 6 – 9:00 AM at the West Tennessee Research and Education Center, 605 Airways Blvd, Jackson, TN
- Monday, July 9 – 12:30 PM – Beginning with a lunch at Wales Station Farms shop located at 540 Little Dry Creek Road Pulaski, TN …… and the Scout School will be held field side at 1:30 PM at 18498 Hwy 64 W, Pulaski, TN
- Tuesday, July 10 – 9:00 AM at 8303 Clay Gregory Road, Orlinda, TN
Reports of increasing plant bug pressure in cotton is not unexpected as we move into July. I’ve fielded a lot of questions about what to treat with, and it is hard to get very inventive when there are only a few ‘got to’ insecticides. Acephate/Orthene and Transform are the backbone of our plant bug management program in blooming cotton. Getting Bidrin into the mix is another option. I encourage everyone to try to work in Diamond and Transform (or both) into their insecticide program. Overreliance on OP insecticides such as Continue reading
Tarnished plant bug infestations are sporadic and variable, mostly a scout a spray scenario. I’ve had a number of comments, especially from the Mississippi River Bottoms, about seeing more clouded plant bugs than usual. Prior to bloom, I count them as equivalent to tarnished plant bug when sampling and making treatment decisions. Once bolls are present, I suggest counting them as equivalent to 1.5 tarnished plant bugs because they are more inclined to injure bolls. Don’t forget to monitor square retention. The goal is to reach first bloom with at least 80% retention Continue reading
I’ve received several calls this week requesting information on whether or not to keep injured cotton and management after the injury. In this brief article, I will cover the ‘keep or discard’ decision and briefly cover best management practices after the decision to keep the crop has been made. Depending on your situation, you may need to document the injury and/or keep a portion of the field to determine the yield penalty. That information is beyond the scope of this article but should be available from your insurance agent or attorney. Continue reading
The EPA has approved Tennessee’s Section 18 request for Sivanto (a.k.a. Sivanto prime) in sweet sorghum for control of sugarcane aphid. This product is already fully labeled on grain sorghum, but requires an emergency use exemption is sweet sorghum. Sivanto is the only insecticide labeled in sweet sorghum for control of the sugarcane aphid. Specific use requirements are listed below. Continue reading
As often happens, there is a flurry of activity in early planted cotton. Plant bugs often stack up there first until other cotton starts squaring. I’ve also had reports of more clouded plant bugs in some areas than we’ve been seeing recently.
Pretty much every year I start the season my suggesting the use of Centric and full-labeled rates of imidacloprid prior to flowerin. I’m sticking to the plan for the first spray or two, but Continue reading