Last summer Dr. Tom Barber, University of Arkansas weed scientist, invited me to visit his field research on glyphosate/PPO-resistant Palmer amaranth in Crittenden County, Arkansas. As was expected glyphosate and Flexstar provided very poor Palmer amaranth control in his tests.
What was not expected is that a number of other herbicides provided poor control as well. Even dicamba at 0.5 lbs/A (Clarity 16 oz) on small Palmer amaranth provided less than optimal control. Continue reading
A number of questions have arisen on how to manage the glyphosate-resistant (GR) Johnsongrass that is very prevalent in some corn fields of south west Tennessee. Much of this corn is now in the V2 to V3 corn growth stage so some decision has to be made fairly quickly before the fields dry. Continue reading
The shortage of Caparol is apparently causing a domino effect and now I hear Cotoran is starting to become tight in some locales. As I mentioned last week, the most common way Caparol and Cotoran have been used is in a tankmix. So what are some options now that Caparol is not in the picture and Cotoran supply maybe sketchy? Continue reading
There is apparently a shortage of Caparol this spring. A good number of calls have come from farmers and retailers on a Plan B now that they cannot get Caparol. Continue reading
With planting just around the corner, there are a few management considerations of cover crops that are being used for weed control. There is no single best way to manage all cover crops prior to any given cash crop. Tailoring the cover crop to best fit your cash crop can make a difference in the ultimate success of your weed control program. Continue reading
With the Xtend technology now available, hopefully everybody is gearing up with the correct nozzles and application knowledge needed to be successful. Although there are other application requirements in place with the new Xtendimax™ (www.xtendimaxapplicationrequirements.com) and Engenia™ (www.engeniatankmix.com) herbicide labels, the single most important thing you can do to steward this technology is equip your sprayer with the correct nozzles. Continue reading
Where is the horseweed (marestail)? That has been a common question this March. I have no data to say exactly but I can speculate. My thought is that the main event that has limited its germination was the very dry fall and indeed winter of 2016 and 2017. Continue reading
The new publication, “W 403: Verticillium Wilt in Tennessee Valley Cotton” provides background on Verticillium wilt, summarizes recent variety trial results, and highlights other practices that can reduce the impact of the disease. Continue reading