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Grayish canker in cross-section of grapefruit branch (cv. Star Ruby) due to bot gummosis, caused by the pathogen Neoscytalidium spp.

Cross section of tree branch with large darker spot extending through the cross section. Leaves surrounding the branch display dried white spray. 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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