» Weeds in the News

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Palmer Amaranth Threatens Midwest Farm Economy, Researchers Report

An invasive weed that has put some southern cotton farmers out of business is now finding its way across the Midwest -and many corn and soybean growers don’t yet appreciate the threat, researchers report. Palmer amaranth germinates throughout much of the growing season more »

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Weeds grow bigger among corn; Weeds influence gene expression, growth in corn

The axiom, “growing like a weed,” takes on new meaning in light of changes in gene expression that occur when weeds interact with the crops they infest, according to a plant scientist. Using sophisticated genetic-mapping techniques, the research team is documenting how corn and weeds influence one another. more »

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Weed of the Week: Dandelions

Dandelions were brought to the new world as a medicinal herb and were considered a resilient, perennial forage plant. It is known mostly as a problem weed on urban lawns, but it can also cause big headaches for farmers. more »

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Understanding Plant-Soil Interaction Could Lead to New Ways to Combat Weeds

Using high-powered DNA-based tools, a recent study identified soil microbes that negatively affect ragweed and provided a new understanding of the complex relationships going on beneath the soil surface between plants and microorganisms. more »

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Yield or Weed Control: What’s the Trade-Off?

With the threat of a major glyphosate-resistant pigweed infestation lurking around the next corner, many anxious farmers are asking themselves, “How much yield can I sacrifice for better weed control?” more »

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Advice From Weed Resistance Expert: Try Diversity

Renowned weed scientist Steve Powles, having had to find solutions and work-arounds in resistant weed-infested crops in his native Australia, has tried to prepare American producers for their own burgeoning resistance problems. more »

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The Three Stages of Weed Resistance Awareness, a simple warning

The biggest mistake farmers make in the battle against weed resistance is to simply wait too long to do anything about it. The one-more-year farmer tries to make another round with his current one-thing-fits-all herbicide management program, and it ends up being a costly decision. more »

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Managing Herbicide Drift is the Law

Keeping herbicides from drifting off target is the law and “it’s the neighborly thing to do,” says a University of Georgia weed specialist. more »

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Palmer Amaranth Resistant to Atrazine Confirmed in Georgia

Plants from a recently collected Palmer amaranth seed sample submitted by Berrien County, Ga., University of Georgia Extension agent Eddie Beasley have been confirmed to be resistant to atrazine. This population was more »

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Weeds Warrant Urgent Conservation

Faced with climate change, plant breeders are increasingly turning to the genomes of the wild, weedy relatives of crops for traits such as drought tolerance and disease resistance. But a global analysis of 455 crop wild relatives has found that 54% are underrepresented more »

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