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Image Number D1325-1

Soil scientist Martin Shipitalo checks the placement of a compost-filled filter sock in a grassed waterway. When runoff occurs from the cornfield (in background), it must pass through the sock. Automated samplers upstream and downstream from the sock determine its effect on nutrient and herbicide concentrations in the runoff.


Photo by Phyllis Dieter.

640 pixels wide: (d1325-1.jpg)

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