Weed Control

C.O.R.N. Newsletter Articles

  1. Author(s): Mark Loux

    Waterhemp and Palmer amaranth are both now listed on the Ohio noxious weed law, which means that landowners must take steps to control infestations and prevent further spread.  Since these are annual weeds, preventing spread is achieved by preventing plants from reaching maturity and producing seed.  This is the basis for our “No pigweed left behind” effort, for which the goal is to create an understanding that the only way to beat these weeds is to prevent seed.  Prevention needs to occur in any area that might be subject to infestation, such as roadsides, parks, conservation seedings, par

    Issue: 2019-22
  2. Author(s): Mark Loux

    We’re running about a month behind in many cases, and with respect to weeds we are a month later than normal in implementing herbicide programs.  The most important thing to know about this is that we are well into the period of summer annual weed emergence, most of which occurs between early May and the end of June, which overall shortens the period of weed control that we need and allows earlier application of POST herbicides.  There are some advantages to this - here’s what it means for those fields just planted or that will still be planted within the next couple weeks:

    Issue: 2019-15
  3. Author(s): Mark Loux

    While it’s not terribly late yet, the wet soils and wet forecast could keep most of us out of the fields for a while.  The questions about how to deal with burndown herbicide treatments in delayed planting situations are rolling in.  One of the most common ones, predictably, is how to kill glyphosate-resistant marestail and giant ragweed and generally big weeds in soybeans when it’s not possible to delay planting long enough to use 2,4-D ester (Enlist soybeans excluded).  While we wrote last week about marestail populations being on the decline, this does not mean it’s gone by any means.  O

    Issue: 2019-11
  4. Both commercial and private applicators should note changes to labeling for Engenia (BASF), XtendiMax (Monsanto) and FeXapan (DuPont) for 2019. If these products will be part of your 2019 herbicide program please review the revised labels and requirements. Of special note is the change that only license applicators can purchase, mix, load, apply or clean application equipment removing the “supervision by a certified applicator” option for these products.

    The complete news release with more details is shown below.

    Issue: 2019-02
  5. Author(s): Dennis Riethman

    Mercer County OSU Extension will host the 2019 West Central Ohio Weed Science Day.  The program will be held on January 17, 2019, at the Knights of St. John Hall, 8608 St. Rt. 119, Maria Stein, Ohio, beginning at 9:00 a.m.  The program will address the current weed situation in area fields along with weed identification and understanding herbicide site of action.  Dr.

    Issue: 2019-01

Publications

  1. 12/2016

    Ohio, Indiana and Illinois Weed Control Guide, Bulletin 789. Publication gives detailed guidance on weed control selections. Numerous tables by crop and application help producers select the best product option for their weed control situation. 

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