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Deepbark canker

(Erwinia rubefaciens)

Diseases caused by this bacteria, which attacks some more sensitive varieties such Hartley, although all are exposed. Produce wounds in the bark of the trunk, 10-15 cm, quite deep, that start at the base of the trunk and spread to the top by the sap. The development is slow but ends up killing the trees. It can be transmitted by insects but above all wounds of the vibrators used in the collection of nuts. Heavy pruning must be made because it is associated with stress problems as lack of irrigation, soil waterlogging, etc. Are unsatisfactory chemical treatments.