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 Image Number D2241-1 |
At a study site in Beltsville, Maryland, ARS researchers measure agricultural herbicides that volatilize into the air after they are applied to the field. Soil scientist Lynn McKee (foreground) works on the pesticide air sampler while micrometeorologist John Prueger (left) adjusts the controls on the manifold and soil scientist Tim Gish downloads micrometeorological data.
Photo by Peggy Greb.
