Category Archives: Soybean

Critters in Our Crops

Author: Scott Stewart, IPM Extension Specialist No Comments

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

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Follow Up Questions on Reports of Poor Palmer Amaranth Control with Dicamba

Author: Larry Steckel, Extension Weed Specialist No Comments

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.

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Management of Late Season Johnsongrass

Author: Larry Steckel, Extension Weed Specialist No Comments
Photo credit: Todd Rankin

Questions continue to arise on management of glyphosate-resistant (GR) Johnsongrass in corn, soybean and cotton. GR Johnsongrass continues to become more of an issue with each passing year.  The main threat with Johnsongrass is in corn where there are few POST applied options. Continue reading

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Moth Trapping Data

Author: Scott Stewart, IPM Extension Specialist Comments Off on Moth Trapping Data

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.

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Recent Midsouth Studies Show Dicamba not Very Effective on some Populations of Glyphosate/PPO-Resistant Palmer Amaranth.

Author: Larry Steckel, Extension Weed Specialist Comments Off on Recent Midsouth Studies Show Dicamba not Very Effective on some Populations of Glyphosate/PPO-Resistant Palmer Amaranth.

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

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Tennnessee Variety Test Program Survey

Author: Virginia Sykes Comments Off on Tennnessee Variety Test Program Survey

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!

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