Copper Spot

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Copper Spot
  • Pathogen: Gloeocercospora sorghi Bain & Edgerton ex. Deighton


  • Common Names: Copper Spot


  • Climatic Zone: Temperate


  • Geographic Distribution: North America (temperate), Europe, Australia (temperate)


  • Favorable Conditions: Occurs in warm 70's to 85 F (21 to 30 C) wet weather, with periods of wet leaf tissue.



  • Symptoms: Symptoms initially appear as 1 to 3 inches (2.5 to 7 cm) diameter spots that can coelesce causing relatively large areas of decline. Once spots coelesce causing areas of decline the symptoms are sometimes confused with anthracnose.
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