Weed Management

Alfalfa harvest
You can harvest seeding year alfalfa as early as 40 days after emergence, but if you can wait until 60 days, you'll benefit from increased root development, which helps avoid issues from soil compaction and surface soil dryness.

Pasture and Forage Minute: Planting Forage in Stubble and Seeding Year Alfalfa Management

June 20, 2023
Tips on planting forages into wheat and rye stubble, how to get the most from your first-year alfalfa and controlling yucca plants on rangeland in western and central Nebraska.

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Palmer amaranth in soybeans

What Do We Know About Water Use of Weeds?

June 14, 2023
In an effort to estimate the cost of weeds to agriculture and the overall economics of weed management, researchers recently analyzed numerous scientific studies on the water use of 34 weed species found across the world.

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Poison hemlock
Extremely toxic to both animals and humans, poison hemlock can be found statewide in Nebraska and is most toxic right before the fruits mature. (Photo courtesy Oregon Department of Agriculture)

Pasture and Forage Minute: Low Hay Stocks, Grazing Shifts, Toxic Pasture Plants

June 13, 2023
With the lowest level of hay stocks since 1974, extension educators stress the importance of taking inventory of feed and hay resources, and to begin planning for next year's needs right now. 

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Palmer in corn
Palmer amaranth invades a corn field in south-central Nebraska. (CropWatch file photo by Amit Jhala)

Effect of Drought on Weeds: Results of Global Meta-analysis

June 13, 2023
Researchers examined more than 1,000 studies to compile a comprehensive report on weed germination, growth and seed production during periods of water stress.

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This Week on N Field: Residual Herbicides in Corn

June 8, 2023
Nebraska Extension Weed Management Specialist Amit Jhala discusses the effect of dry soil conditions on activation of residual herbicides in corn and what can be done to control weeds.

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This Week on N Field: Leafy Spurge Management

June 1, 2023
Leafy spurge is on the move — Nebraska Extension's Amy Timmerman shares tips on identifying and managing this invasive weed as it spreads to new areas of the state.

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Leafy spurge
An effective strategy for controlling leafy spurge is to pair spring applications that prevent seed production with a fall treatment to control new growth.

Pasture and Forage Minute: Controlling Alfalfa Weevil and Leafy Spurge, First Cutting Alfalfa

June 1, 2023
With first cutting alfalfa to begin soon, extension educators discuss the importance of scouting for alfalfa weevils to mitigate yield losses and strategies for timing harvest, plus control options for leafy spurge.

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Cattle in pasture
Whether cereal plant forages are grazed out, hayed or harvested as wheatlage this year, the goal is to timely plant subsequent summer annuals between mid-May to mid-June for optimizing yields.

Pasture and Forage Minute: Wheat Grazing vs. Grain Value, Choosing Summer Forage

May 16, 2023
This week — Recommendations for producers considering wheat for forage, including varieties and planting timelines for summer annual grasses, plus tips on control measures for poison hemlock.

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