Weed Management

Wheat streak mosaic
Wheat streak mosaic

Control Volunteer Winter Wheat and Other Weeds Now to Increase and Protect 2017 Yields, Income

June 23, 2016

By far, the greatest risk of losses from mite-vectored viruses occurs when there is a summer "green bridge" of volunteer wheat emerging before harvest. This almost always occurs as a result of wheat seed head shatter from hail storms (Figure 1).

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Soybean seedling damage
Soybean seedling damage

Herbicide Injury and Pathogen Infection on Soybean Seedlings

June 17, 2016
In an ongoing survey for soilborne pathogens in soybeans, closer examination of soybean seedling injury in a Keith County field found several causes, including herbicide injury and damping off from Fusarium or Rhizoctonia root rot.

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Controlling Summer Grasses In Alfalfa

June 10, 2016
Wet soils in alfalfa fields right after cutting can lead to quick growth of weedy grasses like foxtail and crabgrass, particularly in a thin alfalfa stand. Ensuring a thick stand with good fertility and select herbicides can help you keep grasses under control.

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June 29 Weed Management Field Day
June 29 Weed Management Field Day

Weed Management Field Day June 29 at Clay Center

May 26, 2016

Growers, crop consultants and educators are encouraged to attend Nebraska Extension's Weed Management Field Day from 8 a.m. to 1 p.m. June 29 at the South Central Agricultural Laboratory near Clay Center.

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Herbicide field trial
Herbicide field trial

Acuron™: A New Corn Herbicide

May 19, 2016
As growers look for new opportunities to rotate herbicide active ingredients, combination herbicides may offer the benefits they're looking for. Acuron™ is a combination of four herbicide active ingredients: atrazine (10.93%), bicyclopyrone (0.65%), mesotrione (2.6%), and S-metolachlor (23.4%) plus the safener benoxacor. Acruron may be used pre-emergence and post-emergence in field corn, seed corn, and silage corn. Acuron may also be used in sweet corn and yellow popcorn, but the application must be made prior to crop emergence or serious crop injury may occur.

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New Chart Aids Selection of Diverse Site of Action Herbicides

May 10, 2016
A new herbicide selection chart can help growers select products with diverse modes and sites of action which, in turn, will help reduce the development of herbicide-resistant weeds.

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Common ragweed
Figure 1. Common ragweed (Ambrosia artemisiifolia) (Photo by Amit Jhala)

Reducing Ragweed in Pastures

May 4, 2016
Ragweed has exploded in some pastures in recent years. It takes time, and a well-planned approach such as described here to control ragweed in pastures. With good grazing, some spraying, and timely shredding it can be done.

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Postemergence Weed Control in Alfalfa

May 4, 2016
With all the recent moisture, alfalfa is growing well — as are broadleaf and grassy weeds in the alfalfa. Here are a couple methods for controlling weeds before they affect alfalfa yield.

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