Weed Management

Pesticide application

Survey to Evaluate Chemical Weed Control Methods in Corn, Soybeans

October 7, 2021
The objective of the survey is to understand the main chemical weed control strategies and weed escapes in soybean and corn production fields during the 2021 growing season and to evaluate the interest and awareness regarding novel targeted herbicide spraying technologies. 

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Sunflower and turnip field

Plants for Fallow Summer Periods

September 1, 2021
Many warm-season cover crop species are available and can be used for different purposes in fallow fields, such as improving soil health, breaking up soil compaction, providing forage and supporting beneficial insects.

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Combine collage
Top: Combining weedy dry beans. Bottom left: Palmer amaranth in dry beans. (Photo by Gary Stone). Bottom right: Combine cleanout. (Photo by Meaghan Anderson)

Combine Clean Out Can Help Reduce Weed Spread

August 25, 2021
With increasing pressure from herbicide-resistant weeds such as kochia and introduced herbicide-resistant weeds such as Palmer amaranth and waterhemp, it is important to reduce spreading of weed seed. Doing a limited cleaning between fields and choosing which fields to harvest first can be an important factor in this endeavor.

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Hay bales on trailer
The average round bale may lose up to one-fourth of its original nutrients during outside storage, but these losses can be reduced to less than 10% or so with the right row orientation and adequate ground surface drainage.

Pasture and Forage Minute: Thinning Alfalfa Stands, Hay Bale Storage and Weed Management

August 25, 2021
Extension educators review options for improving thin alfalfa stands, the most effective storage methods to reduce hay losses and managing late summer pasture weeds.

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Field day photo
Amit Jhala discusses a project for control of herbicide-resistant Palmer amaranth in a field near Carleton, Nebraska.

2021 Herbicide-resistant Palmer Amaranth Management Field Day Featured Research and Demonstrations

August 18, 2021
The field day included demonstrations on best practices to reduce herbicide drift, study results on new herbicides to control Palmer amaranth in corn, and discussion on several other research projects.

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Velvetleaf

Control of Velvetleaf with Post-emergence Herbicides in Popcorn

August 12, 2021
Results of a study evaluating the efficacy and crop safety of labeled post-emergence herbicides to control velvetleaf, a major agricultural weed in Nebraska that reduces yields in popcorn if not controlled.

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2021 Weed Management Field Day project demo
Trey Stephens, agronomy master’s student, discusses a project of interaction of planting green and pre-emergence herbicides on weed control in soybean.

2021 Weed Management Field Day Presentations Available Online

August 5, 2021
Demonstrations included several projects for weed control in corn, soybean and sorghum that included efficacy, crop safety and comparison of new herbicides for weed control.

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Oat ryegrass mixture
A spring pasture mix of oats and ryegrass. (Photo by Jerry Volesky)

Pasture and Forage Minute: Alfalfa Weed Control, Planting Oats for Extra Forage

July 22, 2021
This week, extension educators review summer weed control strategies for alfalfa, the benefits of using oats as a fall forage crop, plus the latest information on the 2021 Nebraska Grazing Conference.

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