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United States Department of Agriculture

Agricultural Research Service

ARS Photo Library

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Image Number K10844-1

Engineer Andy Knowlton (left) and technician Rodney Hill take a deep soil sample from the edge of a buffer system to estimate denitrification rates in the soil.

Photo by Peggy Greb.



640 pixels wide: (k10844-1.jpg)




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Last Modified: 5/23/2006
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