Weeds

C.O.R.N. Newsletter Articles

  1. cereal rye cover crop
    Author(s): Mark Loux

    OSU weed scientists are in the process of planning cover crop research, and could use your input. Cover crop use has been on the rise in recent years, most commonly for the preservation of soil, reduction in nutrient loss, and suppression of weeds they can provide. Feedback from this survey will allow us to perform trials that are in line with practices common in the state of Ohio and thus generate more impactful results. Thank you!

    Please take our five second survey!

    Issue: 2018-23
  2. Seed heads of Palmer amaranth and waterhemp
    Author(s): Mark Loux

    If you don’t already have to deal with waterhemp or Palmer amaranth, you don’t want it.  Ask anyone who does.  Neither one of these weeds is easy to manage, and both can cause substantial increases in the cost of herbicide programs, which have to be constantly changed to account for the multiple resistance that will develop over time (not “can”, “will”).  The trend across the country is for them to develop resistance to any new herbicide sites of action that are used in POST treatments.  Preventing new infestations of these weeds should be of high priority for Ohio growers.  When not adequa

    Issue: 2018-23
  3. Author(s): Mark Loux

    This is the time of year when we received our first call about dicamba problems in soybeans in 2017.  We can probably expect any problems to become evident soon, based on the timing of postemergence applications and timeline for development of symptoms.  Off-target issues have already developed in states farther west and south, and we would expect at least some to occur here, unless we’re really lucky.

    Issue: 2018-19
  4. Cressleaf Groundsel. Source: S. Noggle, 2017
    Author(s): Sarah Noggle

    Many questions come into the County Extension Office daily.  Many times those include a question about a weed identification.  During the month of June 2018, OSU Extension will be featuring a weed identification of the week.  This week's weed is cressleaf groundsel, Senecio glabellus. 

    Issue: 2018-16
  5. Author(s): Cindy Folck

    Do you know the weather conditions that contribute to inversions? A workshop on April 10 will focus on tools to help farmers recognize inversions and other weather conditions that affect drift. Aaron Wilson, weather specialist and atmospheric scientist, will discuss weather trends and how to recognize inversions. Additionally, workshop attendees will learn about the new tools available through the Ohio Sensitive Crop Registry by Field Watch to increase communication between field crop and specialty crop growers.

    Issue: 2018-07

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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