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United States Department of Agriculture

Agricultural Research Service

Image Number D1368-4

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Image Number D1368-4

ARS soil scientist Greg McCarty (right) and Dean Hively, a physical scientist with the U.S. Geological Survey, sample plant biomass and soil nitrogen on a cover crop field in the Choptank River Watershed.


Photo by Stephen Ausmus.

640 pixels wide: (d1368-4.jpg)

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Last Modified: 7/29/2010
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