Weed Management

Marestail rosette

Residual Herbicides Best Suited to Spring Marestail Management May 2, 2018

Marestail, also called horseweed, is sensitive to most herbicides labeled for its control early in its growth stage, i.e. the rosette stage. Delaying treatment can allow it to compete with corn and soybean, potentially causing significant yield reduction.

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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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Cereal rye in corn stubble
Figure 1. Cereal rye planted as a cover crop in many fields is slow-growing this spring. Combining a cover crop termination and PRE application may be a valuable time-saver this year, if used correctly.

Q&A on Terminating Cereal Rye, Applying a PRE April 25, 2018

A grower asked: My cereal rye cover crop is only 3 to 5 inches tall going into planting season. Can I combine two field operations in one by applying glyphosate to terminate cereal rye and tank-mixing it with a residual herbicide for early season weed control?

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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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Cover crop field with mixed-species plantings
Later season field of cover crops in southeastern Nebraska. (Photo by Paul Jasa)

Timing of Cover Crop Termination and Related Factors April 20, 2018

Should the cold spring delay cover crop termination? Growers walk a fine line between growing cover crops long enough to get the biomass they want without reducing yield in the following grain crop. This discussion from an agronomist, entomologist and weed scientist looks at various factors to consider.

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How Temperature and Rain Can Affect Burndown Herbicides April 18, 2018

Finding a good time for burndown herbicide applications has been a little tricky this spring, given the below-normal temperatures the first half of April and intermittent snow and rain, all of which can decrease herbicide efficacy. Checking the forecast can help identify an optimal window for application.

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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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