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United States Department of Agriculture

Agricultural Research Service


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Image Number D2402-1

Subsurface drainage water from individual field plots is routed to this sump where flow is measured and samples are prepared for nitrate testing. Here, soil microbiologist Tom Moorman takes a water sample for nitrate analysis.

 

Photo by Peggy Greb.


640 pixels wide: (d2402-1.jpg)




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Last Modified: 8/13/2016
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