Weed Management

Dry bean weed management trial

The Importance of Early Season Weed Control

January 9, 2019
Do early season weeds have the same impact as later season flushes? Researchers here report on a 2018 study conducted in dry bean to compare how soon after planting crop yield was impacted by weed presence.

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Corn yield loss as influenced by three herbicide treatments

Critical Time for Weed Removal in Corn and Soybean is Delayed by PRE-Herbicides

January 9, 2019
Understanding the critical time for weed removal in corn and soybean would not only ensure effective weed removal and minimize unnecessary weed control inputs, but could potentially help minimize the development of herbicide resistance in weeds.

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Over a Half Century of Trying to Solve Weed Management Challenges

January 9, 2019
Emeritus Extension Professor Bob Klein discusses the evolution of weed management systems during his career as a university weeds specialist.

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Visual evaluation of waterhemp growth 21 days after an atrazine application.

Research Report: Prevalence and Mechanism of Atrazine Resistance in Waterhemp from Nebraska

October 26, 2018
Researchers studied waterhemp populations in eastern Nebraska to evaluate the efficacy of PRE and POST herbicide applications and the mechanism of atrazine resistance. Here's what they found and take-home messages to apply to your operation.

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Marestail
Figure 1. Marestail emerging relatively early this year in Nebraska due to plenty of moisture (Photo by Amit Jhala)

Management of Glyphosate-Resistant Marestail in Fall

October 25, 2018
For successful marestail management in the fall, apply herbicides after harvest while weather conditions remain favorable (air temperature above 50°F). Effective control now may negate the need for an early spring burndown application.

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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. Two runs of the experiment (front, just beginning second run; back, just finishing first run) conducted in the greenhouse at the Pesticide Application Technology Laboratory at the university’s West Central Research and Extension Center in North Platte.
Figure 1. Two runs of the experiment (front, just beginning second run; back, just finishing first run) conducted in the greenhouse at the Pesticide Application Technology Laboratory at the university’s West Central Research and Extension Center in North Platte.

Competitiveness of Herbicide-Resistant Waterhemp with Soybean

September 26, 2018
The objective of this study was to evaluate the competitiveness of three herbicide-resistant Nebraska waterhemp populations with soybean in a greenhouse environment. The results indicate the importance of enhancing early-season crop competitiveness.

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Comparison of two wheat research plots near Scottsbluff. On the left is an untreated control plot with a heavy infestation of downy brome and feral rye. On the right the same population of grassy weeds was treated with Aggressor herbicide, part of the CoAXium Wheat Production System.
Figure 1. Comparison of two wheat research plots near Scottsbluff. On the left is an untreated control plot with a heavy infestation of downy brome and feral rye. On the right the same population of grassy weeds was treated with Aggressor herbicide, part of the CoAXium Wheat Production System.

CoAXium™ Wheat Production System and Aggressor™ Herbicide for Controlling Grassy Weeds

August 30, 2018
A new herbicide-tolerant wheat production system was officially unveiled in 2018 and offers growers a new means to control grassy annual weeds in wheat.

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