• Ecophyto
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Symptoms squashs


  • Organs attacked :


Leaves Fruits Rods


  • Symptoms :
    • All aerial organs can be affected.
    • Spots with moist, circular to angular lesions, gradually browning before becoming necrotic (Figures 1 and 2). Their center is duller eventually. Some of them seem to have started from ribs.
    • Presence of a rather marked yellow halo around the lesions (figure 2).
    • Longitudinal cankerous lesions on stems and petioles, slightly sunken, beigeish in color (Figure 3), sometimes with the presence of brown exudates.
    • Zucchini fruits do not seem very susceptible to this fungus.
  • Signs : presence of numerous black pits, stroma, and salmon pink gelatinous masses, acervuli producing numerous spores and materializing the asexual reproduction of Gloeosporium orbiculare . Note that these fructifications are sometimes arranged in concentric circles, that a white mycelial felting is sometimes visible on the lesions, and that they can be observed on all the affected organs.
  • Possible confusion :
  • >>> More pictures


  • Affected production areas :
Reunion Guyana New Caledonia


  •  Colletotrichum spp. reported on squash : Gloeosporium orbiculare
Last change : 04/28/22
Figure 1
Figure 2
Figure 3