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Soft Rot

Common Plant Bacterial Disease

Pathogen Information

Soft rot is a bacterial infection most commonly cause by Pectobacterium and Dickeya species. It will enter the plant through wounds such as cuts and insect damage. Symptoms include:

  • water-soaked, mushy tissue
  • discoloration and sunken fruit
  • A foul odor
  • an ozzy liquid from rotten areas
Microscopic view of powdery mildew

Environmental Conditions

  • Temperature: 70-80°F
  • Humidity: 90%+
  • Most effected species: Amaranthaceae, Brassicaceae, and Solanaceous
Environmental conditions diagram

Disease Progression

Early Stage

Water-soaked spots that rapidly enlarge

Disease progression stages

Mid Stage

Effected area become soft and a slimy liquid will leak out of the wound

Disease progression stages

Late Stage

As the rot blackens a fouls oder will become present

Disease progression stages

Prevention Methods

  • Avoid overhead irrigation
  • Maintain proper plant spacing
  • Remove and destroy infected plant debris
  • Use disease-free seeds and resistant varieties
  • Rotate crops with non-susceptible plants
  • Keep leaves dry and improve air circulation
  • harvest during a dry period to prevent post harvest spoilage
Prevention methods illustration

Treatment Options

  • No treatment is available
Treatment methods