Nebraska Extension Weed Science School

Weed Science School Oct. 31 near Mead

October 11, 2018
Update your weed science knowledge and skills when university, government, and industry speakers join to address current weed science issues and recommendations for improving herbicide applications.

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Figure 1. Glyphosate-resistant Palmer amaranth infesting corn field in south central Nebraska. (Photo by Amit Jhala)
Figure 1. Glyphosate-resistant Palmer amaranth infesting corn field in south central Nebraska. (Photo by Amit Jhala)

Glyphosate-Resistant Palmer Amaranth Field Day July 11

June 25, 2018
Is glyphosate-resistant Palmer amaranth a growing challenge? View field demonstrations and hear from experts at the Glyphosate-Resistant Palmer Amaranth Management Field Day Wednesday, July 11 at Carleton.

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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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Auricles of Canada wildrye
Figure 1. This new Nebraska Extension circular offers information on distinguishing the major grasses found in Nebraska cropland when they're small and should be managed. (A) Auricles of Canada wildrye clasping the stem, and (B) ligule and auricles of Canada wildrye.

New Nebraska Resource on Identifying Grass Weeds in Crops

September 13, 2017
A new Nebraska Extension guide shows how to identify and differentiate various grass weeds common to Nebraska agronomic fields.

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marestail

Status of Herbicide-Resistant Weeds in Nebraska

March 20, 2017
Nine weed species in Nebraska have now evolved resistance to at least one group of herbicides. Six weed species — common ragweed, common waterhemp, marestail, kochia, giant ragweed, and Palmer amaranth — have confirmed resistance to glyphosate. Rotate herbicide sites of action and weed control practice to avoid contributing to this trend.

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Video: Herbicide Resistance Nothing New

March 17, 2017

UNL Weed Scientists on Weed Resistance

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Photos of pigweed species
Figure 1. Common pigweed species found in the Nebraska Panhandle. Palmer amaranth and waterhemp are ALS-resistant. Images, from top to bottom in each column, are of seed, seedlings, and plants in the vegetative growth stage. (Source Nebraska Extension EC94-138)

Management of ALS-Resistant Palmer Amaranth and Waterhemp in the Panhandle

January 6, 2017
Palmer amaranth and waterhemp in the Panhandle are resistant to ALS-inhibiting herbicides. While control of these weeds in dry bean can be challenging, corn, irrigated small grains, and sugarbeet make good rotation options for control. A combined pre/post treatment strategy controls weeds in the early part of the season when crop yield is most impacted and weed species are most susceptible to control inputs.

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