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Image Number K8882-1 |
Plant pathologist William Bruckart examines a yellow starthistle weed
for rust symptoms. The purple-flowered cornflower plants are a close relative
of the weed and are used to evaluate whether potential biological control
pathogens attack nontarget plants.
Photo by Keith Weller.
640 pixels wide: (k8882-1.jpg)
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Last Modified: 05/23/2006
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