Weed Science
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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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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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Listed below, is some field corn hybrid herbicide tolerance information from Dr. Eric Prostko. Pioneer https://www.pioneer.com/content/dam/dpagco/pioneer/na/us/en/products/files/corn/DF_Corn-Hybrid-Herbicide-Response-Ratings-Product-List.pdf Dekalb AgriGold Pages 70-71 on their hybrid guide below https://agrigold.com/Content/pdf/FlipBook/Hybrid-Profile-Guide-2019-20.pdf
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We have had many questions about the Using Pesticides Wisely for 2020. At this time there are two training plans. We are awaiting the final decision from EPA regarding Georgia’s 2020 dicamba training program. Click Read More to see the information sheets, which clearly explain the two plans.
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For anyone interested, here is a comparison of Dual Magnum vs. Outlook on tropical spiderwort control in peanut from some past research of Dr. Prostko (UGA Weed Specialist) Outlook is the activated isomer of the herbicide formerly sold as Frontier (dimethenamid). If you are not very familiar with Outlook, it is in the same herbicide family…
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There has been a few questions on weed control in oats. In oats, there is not as many good options as there are with wheat. Oats can be more easily damaged. Before Christmas is the best timing to focus on weed control and we usually need to get weeds such as wild radish while it…
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Listed below is some information obtained from Dr. Prostko (UGA Weed Scientist) on Cadre (imazapic) carryover and oats. Cadre is used on a large percentage of peanut acres in Georgia. “The official labeled rotation restriction for oats after an application of Cadre is 18 months!” ” Field research conducted in Georgia indicated that the rotation…