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United States Department of Agriculture

Agricultural Research Service

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Image Number D2565-2

Horticulturist Joseph Albano (right) measures chlorophyll levels in leaves of marigolds treated with the chelating agent EDDS, and technician Chris Lasser measures iron levels in iron chelate samples.


Photo by Stephen Ausmus.

640 pixels wide: (d2565-2.jpg)

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Last Modified: 10/13/2016
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