A website from UGA Cooperative Extension

Weed Science

  • Recent rains through much of the county have helped with crop water needs; and likely with some of the insects problems that are present such as lesser cornstalk borer, aphids, spider mites, and whiteflies. Good growing conditions for the crops right now, and also good conditions for disease to start becoming an issue. Overall, crops…

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  • Following is important information for Georgia cotton growers on a Section 24(c) special local need label for Liberty. Thankful for the dedication and work of Dr. Culpepper (our UGA Specialist) and GDA and BASF for getting this in place. New Liberty 24 (c) state label to help Georgia cotton farmers (A. S. Culpepper). As a…

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  • Update on Dicamba

    Following is an update from Dr. Stanley Culpepper for our growers on dicamba. Dicamba (A. S. Culpepper).  On June 8, 2020 the U.S. EPA released critical information on Engenia, Fexapan, and XtendiMax. The entire release can be found at https://www.epa.gov/newsreleases/epa-offers-clarity-farmers-light-recent-court-vacatur-dicamba-registrations Please visit the website for details; however, below are the details of the order: “Details…

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  • A few things to share with growers based upon my phone calls and field observations:  1) I am getting the feeling that many peanut growers are blindly applying EPOST or “cracking” sprays of paraquat without first walking their fields.  From my field plots earlier today, Figure 1 is a picture of a non-treated check (NTC)…

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  • Following are some timely comments from Dr. Eric Prostko, UGA Weed Scientist. As of May 11, 28% of the Georgia peanut crop was reported as planted.  Thus, peanut growers should now be evaluating the success of their PRE weed control programs and deciding on the need for early postemergence or “cracking” herbicide applications.  Here are…

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  • The Using Pesticides Wisely training has moved to an online delivery April 21-23, 2020. The University of Georgia and the Georgia Department of Agriculture dicamba training program will complete the 2020 sessions using online webinar delivery of materials. The US EPA requires only applicators who were not trained in 2019 to complete the training in…

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  • There has been some different herbicide questions as of late for corn and even grain sorghum. POST applications of Prowl can cause root injury but this usually only occurs when the corn seed has been planted < 1.5″ deep and seed-furrow closure is not adequate. Figure 1 presents some recent research data from UGA weed…

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  • Corn Herbicide Programs

    When using Atrazine and Glyphosate (which are common herbicides being used in a program for Roundup Ready corn.) Prowl could be a good option to add if you mainly have grass weeds, or Laudis could be a good option to add if palmer amaranth is your main problem.

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  • Palmer Amaranth is starting to be seen emerging in fields. Strip-tillage peanut growers who are applying burndown herbicides (Roundup, Gramoxone, 2,4-D) now should consider including a residual herbicide with the burndown. Valor SX 51WG @ 2 oz/A or Dual Magnum 7.62EC @ 16 oz/A could be good options. Residuals included with the burndown herbicide program…

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  • Many rules regarding the purchase, handling, and application of paraquat are changing.  Most notably, all non-bulk paraquat products (with new labels) must adhere to closed-system packaging requirements set forth by the EPA’s Paraquat Dichloride Human Health Mitigation Decision by November 2020.  All paraquat applicators are required to complete an EPA-approved training module before applying. Click on…

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