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Bacterial Spot - Xanthomonas campestris
  Clemson University - USDA
Cooperative Extension Slide Series, www.ipmimages.org
 HOSTS: Tomatoes and peppers. DESCRIPTION:
Leaves,
stems, and fruit develop brown, circular spots without concentric zones
as for Early Blight. LIFE
CYCLE: The
bacterium overwinters on plant debris and seed. It is favored by wet
conditions and temperatures of 75 – 86° F. CONTROLS: Keep water off of leaves.
Use a 3 year rotation. Treat seed with hot (122° F.) water or
bleach. Spray copper during wet, warm (>75° F.) weather. |
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