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United States Department of Agriculture

Agricultural Research Service

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Image Number D1303-3

Soil scientist Dong Wang (left) records soil moisture data with a probe as technician Matt Gonzales (right) and agricultural engineer Jim Gartung record grape canopy cover with a spectral camera. Manually collecting data on the ground is necessary for calibrating satellite imagery.


Photo by Stephen Ausmus.

640 pixels wide: (d1303-3.jpg)

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Last Modified: 8/13/2016
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