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United States Department of Agriculture

Agricultural Research Service

Image Number D2992-1

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Image Number D2992-1

In Fort Collins, Colorado, plant physiologist Dale Shaner uses a dye test to detect the compound shikimate in plant leaves. Measuring this compound can determine whether a weed will resist the herbicide glyphosate.


Photo by Rod Pentico.

640 pixels wide: (d2992-1.jpg)

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Last Modified: 8/29/2013
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