Calls continue to come in on concerns about poor Palmer amaranth control after a dicamba application. More than a few have reported that Palmer amaranth has survived multiple dicamba + glyphosate applications (Example above). Continue reading
It’s been a generally quite week for insect problem but below are some reminders and suggestions.
Cotton: Most cotton is past the stage where thrips are a concern. Tarnished plant bugs will now be our primary focus for much of the season. Thus far, most reports indicate a slow and sporadic start with plant bugs, but treatments are now being made more widely. However tempting, I encourage people to avoid using Continue reading
We’ve added a cotton weed control video to the 2020 Weed Tour playlist. Check it out.
Some of the earlier planted cotton fields are entering the true “laying it by” application timing. Given the continued reports of Palmer amaranth, prickly sida, barnyardgrass, junglerice and goosegrass escaping glyphosate + dicamba applications going back to an “old school” layby is a good plan.
Below are a few reminders as much of the crop will begin squaring in the next week. It’s too soon to know what kind of plant bug year we will have, but there are a couple of truism that generally hold. When we have a wet spring, and particularly a cool spring, infestations in cotton often start a little later than normal. The weedy hosts of tarnished plant bug will stay attractive longer, holding the bugs longer before they migrate into cotton. However, we often since higher than normal populations during mid and late season under the same circumstance. Second, Continue reading
Since we could not gather today for the annual Weed Tour, Dr. Larry Steckel and Clay Perkins have developed a few short videos highlighting weed management research.
Some reports have come from folks concerned by the lack of Palmer amaranth response to applications of dicamba plus glyphosate applied in the last 10 days. I expect to get more of these calls as I have seen similar results in our research this spring. Continue reading
Dear Colleagues
The University of Tennessee Weed Tour has been cancelled. Due to the covid-19 virus no large groups are allowed to visit a University research station. Since we cannot have an in-person tour, we plan to post some short videos on the UT Crops News Blog highlighting some of the more interesting research from this summer.
Thanks,
Larry Steckel