Glyphosate Resistance

Glyphosate-resistant marestail

Postemergence (Rescue) Herbicide Options for Control of Glyphosate-Resistant Marestail in Corn and Soybean

May 24, 2017
Several factors have contributed to delayed applications and marestail escapes this spring. Includes recommendations for timely postemergence control in corn and soybean.

Read more

Amit Jhala (left) and Debalin Sarangi
Amit Jhala (left) and Debalin Sarangi (right) along with other scientists detected pollen-mediated gene flow from glyphosate-resistant common waterhemp in Nebraska.

New Research Quantifies the Dispersal of Glyphosate Resistance Trait Through Pollen-Mediated Gene Flow

May 18, 2017
The pollen-mediated gene flow was detected 38% to 54% at 0.1 meter distance and 5% to 9% at 50 meters, the highest distance tested in this study.

Read more

Horseweed plant stages
Figure 1. (Top left) Newly emerged horseweed seedlings in the cotyledon stage. (Bottom left) Seedling in the rosette stage with true leaves formed. (Right) Horseweed plants that are early in the bolting stage.

Nebraska Extension Pest of The Month: Horseweed

January 5, 2017

Horseweed (marestail, Conyza canadensis L.) is a unique weed species that can emerge in both fall and spring. In Nebraska, unlike the eastern Corn Belt, horseweed populations predominantly emerge in fall as a winter annual.

Read more

UNL greenhouse trial of glyphosate resistance in kochia
kochia in the greenhouse

Managing Glyphosate- and ALS-Resistant Kochia in the Panhandle

December 15, 2016
The development and management of pesticide-resistant kochia in dryland and irrigated systems in the Panhandle including a table of herbicide options for Nebraska.

Read more

Using Preplant Tillage to Manage Glyphosate-Resistant Giant Ragweed

March 31, 2016
Tillage can be an important tool in diversified weed management when used judiciously and combined with other weed control tools such as crop rotation and herbicides.

Read more

Control Early Stages of Marestail and Kochia

March 18, 2016

Glyphosate-resistant weeds pose a major threat to no-till production in Nebraska.

Read more