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USDA / Agricultural Research Service |
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Invasive Weed Management Unit |
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Soybeans
Glyphosate and glyphosate-tolerant soybean quickly became a nearly exclusive weed management approach in the last decade. Recently, effectiveness has declined markedly, characterized by a proliferation of weeds resistant to glyphosate and other herbicides.
· IWMU scientists quantified progress of invasion by glyphosate-resistant common waterhemp from its origin in Illinois and verified models to predict spread.
· IWMU research provided answers to troublesome behaviors of herbicides used to manage weeds in soybean rotations, such as inactivation of trifluralin in wet soils and persistence of the corn herbicide, prosulfuron, which causes serious crop damage. |
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A soybean field infested with waterhemp. |