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Almond - Bacterial Canker

Direct copy from UC IPM website to word document Statewide IPM Program, Agriculture and Natural Resources, University of California All contents copyright © 2009 The Regents of the University of California. All rights reserved. Symptoms are most obvious in spring and include limb dieback with rough cankers and amber colored gum and/or total tree collapse. There may also be leaf spot and blast of young flowers and shoots. The sour sap phase of bacterial canker may not show gum and cankers, but the inner bark is brown, fermented, and sour smelling. Flecks and pockets of bacterial invasion in bark occur outside canker margins. Frequently, trees sucker from near ground level; cankers do not extend below ground....

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