Symptoms of Choanephora cucurbitacearum on spring onion

• Organs attacked :

• Symptoms :
  • amplification of lesions and drying out occurring at the end of the leaves (figures 1 and 2) or elsewhere on the leaf blade (figure 3).

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• Signs : a blackish and airy mold more or less covers the rotten fabrics. Fruiting bodies in the shape of small pinheads are visible (figure 2).
• Possible confusion :

• Production areas affected :