All posts by Larry Steckel, Extension Weed Specialist

Management of Volunteer Xtendflex Soybeans in Xtendflex Cotton

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What are some options to control volunteer XtendFlex soybeans in XtendFlex cotton fields?  This issue is something that we need to do research on as there is no data. As such in answering the question one has to rely exclusively on experience. Unfortunately, all the experience that I and my Midsouth colleagues have does not hint at a real good option to remove these volunteers. Continue reading


Post-Direct and Hooded Application Options for Cotton

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Picture 1. Goosegrass escaping dicamba + glyphosate at burndown followed by dicamba + glyphosate early POST

Some of the earlier planted cotton fields will soon be entering the true “laying it by” application timing.  Given that some are clearly not successful spraying Palmer amaranth, goosegrass or junglerice with glyphosate + dicamba (Picture 1 and 2), going back to an “old school” layby is a good plan. Continue reading


Auxin Herbicide Resistant Palmer amaranth Management

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Picture 1. Palmer amaranth escapes 18 days after application of XtendiMax /fb Clethodim. Research in Madison county

Getting reports from several consultants frustrated with the lack of Palmer amaranth control after applications of either Dicamba or Enlist One in cotton and soybean.  Indeed, in our second year of field research at locations where dicamba or 2,4-D provided sketchy pigweed control in 2021 we are seeing similar if not worse Palmer amaranth control in 2022 (Picture 1). Continue reading


Junglerice and Barnyardgrass Management in Soybean and Cotton

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There have been several reports last week of multiple glyphosate and/or clethodim applications not controlling barnyardgrass or junglerice.  We really do not know the precise reasons for the lack of control in any given field but based on previous research and past experience there are a couple likely causes. Continue reading


UT Weed Tour is this Wednesday June 15

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JACKSON, Tenn. – The University of Tennessee Institute of Agriculture will host the annual Weed Tour is this Wednesday, June 15 at the West Tennessee AgResearch and Education Center. The guided tour will feature 40 weed management research tests in corn, soybean and cotton as well as a demonstration of herbicide symptomology. Continue reading


Managing Palmer Amaranth

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(Picture 1) Pre applied herbicide breaking earlier than in 2021

Judging by our research plots as well as walking some cotton and soybean fields most Pre applied herbicides are playing out about 7 to 10 days quicker than last spring (Picture 1).  The frequent rain would most likely be the reason for this. Continue reading


UT Weed Tour (June 15, 2022)

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JACKSON, Tenn. – The University of Tennessee Institute of Agriculture will host the annual Weed Tour next Wednesday, June 15 at the West Tennessee AgResearch and Education Center. The guided tour will feature 60 weed management research tests in corn, soybean and cotton as well as a demonstration of herbicide symptomology. Continue reading


Weed Control Strategy on Struggling Cotton

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The call of the last week was easily “my cotton looks like #&*^!”.  The main reason for cotton looking bad was the cold wet spell over Memorial Day weekend that seemed to last longer. That poor cotton growing weather then catalyzed pre-applied herbicide injury in some cases, seedling diseases in other cases and has likely made a bad thrips window even worse across most every field.    Continue reading