All posts by Larry Steckel, Extension Weed Specialist

24 May 2018

Palmer Amaranth Management: Frequent Rain Making it very Difficult

24 May 2018
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This weather pattern has Palmer amaranth management in a terrible fix for many fields in West Tennessee.  The rain that has occurred on an almost daily basis for over a week in many areas has delayed early POST herbicide applications.  The forecast for rain into June looks to be a similar pattern. There will likely be a very small window to spray until the first week of June for numerous fields.  Palmer amaranth is growing quickly and now is often in the 1 to 3” range where a PRE was used and 10 to 14” range in fields where no PRE was used.  Continue reading →


21 May 2018

Managing Large Palmer Amaranth in Large Corn

21 May 2018
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Judging by our research here as well as field visits and  phone calls from folks walking corn fields it is very apparent that pretty much any PRE applied herbicide in corn has given out. Even some of the PRE applied herbicides that traditionally have provided consistently long weed control like Acuron or Bicep have given out about 25 days after application.  In a few fields I visited today clearly no PRE was applied to the corn and Palmer amaranth jungles were very evident in the fields. After visiting these fields I will take a PRE that has given out any day. Continue reading →


14 May 2018

Destroying a Poor Corn Stand to be Planted Back to Soybean or Cotton

14 May 2018
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Clearly the most frequent call the last few days of April and the first half of May has concerned corn replant.  All through early May the calls have been on how to destroy a partial stand of corn and replant back to corn.  In just the last few days the question has been on how to remove a poor stand of corn and then plant back to soybeans or cotton. Continue reading →


14 May 2018

Scout Cotton and Soybean Fields Planted Last Week for Palmer Amaranth

14 May 2018
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I have gotten numerous reports of Palmer amaranth becoming established in fields where PRE applied herbicides were not activated by timely rainfall. Indeed I have seen some in my research as well. There were many acres of cotton and soybean planted May 7 to May 14. The rain that was in the forecast for last week was a no-show.  The result is many of the PRE applied herbicides sprayed on all those cotton and soybean acres was not activated.  This has led to a large flush of Palmer amaranth to emerge with the cotton and soybean in a good number of fields in Tennessee. Continue reading →


03 May 2018

Applicators Must Have a Copy of 24c Label for Engenia or XtendiMax

03 May 2018
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It is my understanding that applicators when they apply Engenia or XtendiMax must have on hand a copy of the 24c label for those herbicides.  A hard copy is preferred. Baring that a downloaded copy on to your Ipad, tablet or phone would be better than nothing.  Trying to down load a copy on to your phone as the TDA inspector pulls into your field is not recommended. The links so you can down load, print a copy and read before you go spray is:

Engenia  http://www.cdms.net/ldat/ldDG8026.pdf

XtendiMaxTN xtendimax 24c label Continue reading →