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BLACK GOO (PETRI DISEASE)



Black goo disease blocks the water conducting cells (xylem), preventing normal sap flow
Black goo disease blocks the water conducting cells (xylem), preventing normal sap flow
Photo credit: R. Balasubramaniam
Look For Look For Notes

   LOOK FOR


    Look for in leaves
  • Small leaves and signs of reduced growth especially on young vines

   CONDITIONS

  • A black goo shows in cut sections of the trunk on weak young vines

OTHER BLACK GOO (PETRI DISEASE) IMAGES

Black goo seen as black stains in this cross-section of a vine trunk Black goo decline reduces growth of vines by blocking sap flow in the trunk

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