Figure 1. Palmer amaranth curling within a week of spraying a postemergence dicamba product to corn. (Photo by Jenny Rees)

Considerations for Postemergence Dicamba-based Herbicide Applications to Corn May 31, 2018

With postemergence herbicide applications occurring to corn, consider these best management practices to improve results and reduce the potential for off-target injury from your dicamba application.

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Dicamba injury to a grape plant

Sensitivity of Grape and Tomato to Micro-rates of Dicamba-Based Herbicides May 3, 2018

Researchers report on a study to confirm the level of sensitivity of grapes and tomatoes to 1/10 and 1/100 of the label rate of dicamba. The studies were conducted with pot-grown grape and tomato plants during the summers of 2016 and 2017 at the Haskell Ag Lab.

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Broadleaf weeds

Q&A: Which Dicamba Product Should I Use to Kill Broadleaf Cover Crops or Burndown Weeds Before Xtend Soybean? April 27, 2018

With a delayed or compressed planting season, this week several growers asked whether they could immediately plant soybeans after a dicamba application. See how Extension Weed Scientist Amit Jhala replied.

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Managing Pesticide Applications for Me and the Environment April 23, 2018

Pesticide applications dominate today’s agricultural landscape. These applications are critical for mitigating yield loss and managing a wide variety of pests. In today’s environment, it is critical that pesticide applicators focus on both managing the pest as well as mitigating environmental impact to non-target areas or non-target organisms.

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The Good, the Bad, and the Ugly when Spraying the New Phenoxy Herbicide Formulations April 16, 2018

The Good is that these new phenoxy herbicide formulations will help control tough broadleaf weeds, including resistant and difficult-to-control weeds in Xtend and Enlist soybeans.

The Bad is that if not used with a weed management plan, we could quickly lose these new formulations to weed resistance.

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The Rise of Multiple-Resistance in Nebraska’s Weeds and Effects Of Dicamba Micro-Rates on Sensitive Crops April 16, 2018

Weed resistance to herbicides is a global problem, which usually results from the repeated use of herbicides with the same mode of action. Simply said: “Weeds just got used to that mode of action and cannot be killed with that mode of action anymore.” Similar phenomenon is observed in medicine with disease resistance to antibiotics.

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soybean leaf cupping
Figure 1. Leaf cupping of non-Xtend soybean is one indicator of crop injury from dicamba off-target drift.

Dicamba Off-target Injury Issues in Nebraska Soybean April 9, 2018

Dicamba- and glyphosate-resistant soybean, also known as Roundup Ready 2 Xtend soybean, became commercially available for the 2017 growing season. About 500,000 acres were planted with Xtend soybean in Nebraska in 2017 growing season. Three dicamba-based herbicides — XtendiMax, FeXapan, and Engenia — are labeled for application in Xtend soybean.

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Market Journal on Importance of Following Dicamba Labels April 6, 2018

This week on Market Journal Greg Kruger, Nebraska extension weed science and application technology specialist, discusses the importance of reading, studying, and following dicamba product labels.

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