Weed Management

Figure 2. Cheatgrass seed heads (or panicles) as they mature. The panicles on the left are shattering, the second on the left is mature but not shattering, the two on the right are immature.
Figure 2. Cheatgrass seed heads (or panicles) as they mature. The panicles on the left are shattering, the second on the left is mature but not shattering, the two on the right are immature.

Nebraska Extension Pest of the Month: Cheatgrass

October 17, 2016
The winter annual weed species cheatgrass is competitive with crops, desirable forage, and native plants and will reduce productivity of crop and range land. Learn how grazing, mowing, and properly timed herbicide application can be integrated to provide effective control.

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Fall Management of Cool-Season Invaders in Pastures

October 12, 2016

When cheatgrass, bromes, and other cool-season plants invade native warm-season grass pastures and rangeland, they shift good grazing away from summer.

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Thistle Control During October

September 21, 2016

It’s thistle time again. Even if they are hard to see, this is the time to control them.

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Weed Control Options in Seedling Alfalfa

September 21, 2016

Late summer plantings of alfalfa tend to have fewer weeds than spring plantings, but this year, fall weeds may be a problem in some fields.

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Controlling Winter Annual Bromes this Fall

September 14, 2016
Early to miid-September is a good time to start controlling winter annual bromes in your pasture.

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Palmer amaranth
Palmer amaranth

Your Help Needed to Identify Palmer Amaranth Distribution in Nebraska

September 2, 2016
Nebraska Extension is requesting help in identifying the distribution of Palmer amaranth in Nebraska by taking this short survey.

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Russian thistle in wheat stubble.
Russian thistle in wheat stubble.

Fall Weed Control Options for Winter Wheat

August 31, 2016
Weed management is a long-term battle that needs to continue even in tight margin years.Although herbicide costs may seem prohibitive, it’s important to consider the long-term implications of limiting or eliminating the use of herbicides in crop production systems.Weeds left unmanaged after wheat harvest use valuable nutrients and water needed for the following year’s crop while producing seeds to replenish the soil seed bank.

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Debalin Sarangi, weed science postdoctoral research associate, describes the key identifying characteristics of broadleaf and grass weed species during weed management field day
Figure 1. Debalin Sarangi, weed science postdoctoral research associate, describes the key identifying characteristics of broadleaf and grass weed species during a 2016 weed management field day.

New Herbicides & Managing Multiple Herbicide-Tolerant Crops

July 28, 2016
In Nebraska, eight weed species (common ragweed, common waterhemp, giant ragweed, kochia, marestail, Palmer amaranth, redroot pigweed, and shattercane) have been confirmed resistant to at least one herbicide.  Six of them — common ragweed, common waterhemp, giant ragweed, kochia, marestail, and Palmer amaranth — have been confirmed resistant to glyphosate in Nebraska. This article reviews information presented at the Weed Management Field Day at the UNL South Central Ag Lab, focusing on field demonstrations and methods to reduce the development of further herbicide resistance.

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