Potato gangrene
Phoma exigua
Desmazières describes the species as occurring on stems and dried leaves, with two varieties: one of which is found on the stems and leaves of a Polygonum species, and the other on the stems and leaves of Ranunculus.
It causes wet weather blight in cotton and it can be treated with systemic copper.
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Plant Protection Products
- ⭑⭑⭑
- N/A