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Tests show dicamba's volatility

UA researchers say newest herbicides capable of drifting

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Photographs by Stephen Steed

Farmers and agriculture industry workers walk through a Mississippi County soybean field Tuesday at the University of Arkansas’ Northeast Research and Extension Center in Keiser during UA’s annual “field day.”

The newest dicamba herbicides on the market -- approved by federal regulators less than a year ago -- are volatile, but less volatile than the older formulations that have always been illegal for in-crop use, according to recent tests by scientists with the University of Arkansas Agriculture Division.

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Jason Norsworthy, a University of Arkansas weed scientist, talked to field day visitors in Keiser about the tendency of the h... + Enlarge

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