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A grape leaf with irregular, red and yellow lesions due to downy mildew, Plasmopara viticola.

A grape leaf with irregular, red and yellow lesions due to downy mildew. Credit: Jerzy Opiola<br />Licensed under a <a href=" https://creativecommons.org/licenses/by-sa/4.0/deed.en ">Creative Commons Attribution-ShareAlike 4.0 International License</a>
Credit: Jerzy Opiola
Licensed under a Creative Commons Attribution-ShareAlike 4.0 International License
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