There have been some Gramoxone burndown applications that have left some Palmer amaranth survivors. This happens to some extent every year. The cause of the problem is almost always coverage. Continue reading
My phone hasn’t been going crazy with critter calls, but slug injury has been the clear winner this week, both in cotton and soybean. I also want to put forth a few reminders about thrips in cotton. Continue reading
The blog on inconsistent dicamba performance on Palmer amaranth has caused some follow up questions.
Is there any difference between Engenia, Xtendimax and Clarity for actual Palmer amaranth control? NO. I know from repeated research with all three that they all perform fairly well on a 1 to 4” Palmer amaranth. They all often need follow up applications on Palmer that is larger than 4”.
Are PRE applied herbicides needed in Xtend soybeans? YES. The folks to date who have had issues with dicamba performance were not using any PRE applied herbicides. It is hard to get good coverage in those thick mats of pigweeds where PREs have not been used.
In a March blog I noted the lack of horseweed (marestail) in many fields but thought an April germination event of this weed could come late to the party and pose a problem. On occasion I make a good guess, as that has clearly been the case. Continue reading
The worst kept secret in West Tennessee has been the reports of poor Palmer amaranth control with Engenia in a field in Fayette County. Continue reading
This is a reminder that moth trapping data for corn earworm (bollworm), tobacco budworm, and southwestern corn borer will be posted weekly during the summer. You can open the Excel file under the Quick Link menu on the left or directly at this link – http://www.utcrops.com/BlogStuff/2017MothTrappingData.xls. A few southwestern corn borers were caught this week, indicating the first generation is starting, perhaps just a little earlier than usual. Generally low numbers of corn earworm and tobacco budworm moths were also caught last week.
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
Things have been busy this past month in the Tennessee variety test program as entries continue to roll in for our 2017 corn and soybean tests. This year we will be testing a total of 86 corn grain hybrids, 11 corn silage hybrids, and 195 soybean varieties across the state of Tennessee.
We know the variety test program is important to many of you. In order to make sure this program continues to meet your needs, we’d like some feedback from you!
If you are a Tennessee corn, soybean, wheat, or cotton producer, please take a few minutes to help us out by taking this survey. Producer – Variety Test Survey
If you are not a producer, but you provide folks with advice on variety selection (scout, retailer, seed company rep), then please take this survey. Industry – Variety Test Survey
Thanks for your help as we continue to figure out ways we can better serve you through our Tennessee variety test program!