The bane of peach and nectarine growers in the eastern United States, bacterial spot can lead to significant and sometimes total fruit loss, especially during the wet and warm conditions that the disease-causing bacteriafavor. Growers can, however, fight back with a management program that incorporates the active winter pruning of twig cankers, which can harbor large concentrations of the bacteria, called Xanthomonas arboricola pv. pruni. ("or Xap).
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