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Gum oozing from dead bark of grapefruit (cv. Star Ruby) tree due to bot gummosis, caused by the canker pathogen Neoscytalidium spp.

Grapefruit tree branch with oozing sap from what appears to be loose bark on part of the branch. Credit: Themis J. Michailides, Kearney Agricultural Research and Extension Center, Parlier — Credit: Themis J. Michailides, Kearney Agricultural Research and Extension Center, Parlier

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