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Apricot Disease-Brown Rot Blossom and Twig Blight

From UC IPM Monilinia laxa and Monilinia fructicola The blossom and twig blight phase begins with the death of young blossoms and their associated spurs and leaves. Infection moves from flowers into twigs to form small cankers. Gum exudes at the base of infected flowers. Cankers on blighted twigs have tan centers with dark margins. In high humidity gray brown spore masses form on diseased flower parts and twig cankers.