Category Archives: Weeds

Large Palmer Amaranth Management in Cotton and Soybean

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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

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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

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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


Two Pass Weed Control Programs in Corn are Providing Much Better Weed Control

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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