There have been a few calls over the past several days on soybean fields where fomesafen based herbicide, Ultra Blazer or Cobra has been applied on Palmer amaranth that was greater than 4” and now the Palmer is growing back. The question that follows is “what can I do next to salvage these soybeans?” Continue reading
Category Archives: Weeds
Unseasonably Cool Temperature Effect on Weed Control
We have gotten a number of calls on how effective Liberty will control weeds during this unseasonably cold first week of July. Continue reading
Large Palmer Amaranth Management in Cotton and Soybean
This large wheat crop is taking a lot of time and labor this summer. This is both good and bad. The good news is the wheat is yielding very well which comes at a good time to get some bills paid. The bad news is that it is very slow going as much of it is laying down and the great yields take quite a bit of labor to get it to the granary. All this time and labor devoted to the wheat harvest has delayed herbicide applications in cotton and early planted soybeans. Continue reading
Weed Management in Late Planted Corn
It appears there will be a great deal of late May and June planted corn in Tennessee this year. Temperatures are beginning to warm up, and this late planted corn will grow very quickly. Moreover the Palmer amaranth with this weather can emerge and grow to 8” in just 13 days. Therefore if this late planted corn does not have a pre emerge applied it will need to be sprayed soon. Continue reading
Glyphosate-Resistant Palmer Amaranth Becoming a Bigger Issue in Middle TN
We are getting questions from folks in Middle Tennessee now on how to control severe infestations of Palmer amaranth 6 to 8” tall in Roundup Ready (RR) soybeans. This is a big milestone because Palmer amaranth could not be found as recently as 2008 and 2009 in several surveys we ran in Middle TN. Continue reading
Over-The-Top Herbicide Injury in Cotton and Soybeans Very High This Spring
Judging by our research at Jackson and Milan along with over sprays last week we are seeing more burn of both soybeans and cotton with over the top herbicide applications. Continue reading
UT Weed Tour Next Thursday
Dear Colleagues
Just a quick reminder that The University of Tennessee Weed Tour will be held next Thursday, June 20 at the West Tennessee Research & Education Center in Jackson, TN. Registration will start at 8:30 A.M. and the tour will begin at 9:00 A.M.. Continue reading
Two Pass Weed Control Programs in Corn are Providing Much Better Weed Control
Many folks the past two weeks have found that they need to apply a “layby” herbicide application to their corn. I have gotten a number of calls from some of these folks who were dismayed that their pre applied herbicide had given out some time ago. In many cases they are reporting that they now have 18 to 24” Palmer amaranth up in their big corn. Continue reading