Stephen Ausmus, USDA Agricultural Research Service, Bugwood.org
licensed under a Creative Commons Attribution 3.0 License.
licensed under a Creative Commons Attribution 3.0 License.
Image Number: 1355035
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Descriptor:
Biological Control
Description:
Small, rust-colored spots on starthistle leaves. The presence of these spots indicates that the first field releases of rust spores on starthistle are a success.
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Image uploaded:
Wednesday, March 16, 2005
Image last updated:
Thursday, March 17, 2005
