Limit the threat of giant ragweed and kochia early in the soybean growing season with a one-two punch of chemical and cultural practices. Kochia and giant ragweed are formidable broadleaf soybean ...

AMES, Iowa (AP) -- Over the past few years, Iowa weed populations have changed to adapt to farmers' management changes. Giant ragweed is one of the weeds that has evolved to survive current practices, ...

If you struggle with seasonal allergies and hay fever, chances are the mere mention of ragweed can give you the sniffles. Not only is the native weed notorious for causing allergy symptoms, but there ...

Purdue scientists found that soil microbes may play a role in how those weeds react to the popular herbicide glyphosate. Here, glyphosate-susceptible biotypes of giant ragweed react differently to the ...

From left: Felipe Faleco, University of Wisconsin-Madison, hands a bag of PPO-resistant giant ragweed seeds to Pat Tranel, University of Illinois Urbana-Champaign. The team identified the first cases ...

WEST LAFAYETTE, Ind. - Farmers who spot giant ragweed in their fields should apply a post-emergent herbicide before the infestation becomes unmanageable, even if no other weeds have appeared, two ...

When giant ragweed takes hold in a crop field, the towering weed reduces yield and sends plumes of its famously allergy-inducing pollen into the air. There are few tools available to thwart the menace ...