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Apricot Disease-Verticillium Wilt

From UC IPM Verticillium dahliae Verticillium wilt becomes apparent when leaves on one or more branches, often on only one side of the tree, turn yellow and/or wilt early in the growing season. The symptoms progress until the infected shoots die and dry in a curled position often called a "shepherd's crook". When shoot, branch, or trunk tissue of infected trees is dissected, the vascular ring and often much of the heartwood will display dark discoloration. Foliar symptoms usually appear only on young trees (2nd to 4th leaf). Older trees do not normally present symptoms of Verticillium wilt.

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