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Post Harvest Diseases:: Vegetables:: Brinjal

Anthracnose: Colletotrichum melongenae
Symptom:
  • Sunken lesions on fruits vary in size
  • Upto 1.3cm wide and may coalesce
  • Tan colored ooze of fungal spores appear on lesions
  • Fruit dries & become black – fruit drop
 
  Concentric rings Decayed fruit Severe infection
Identification of pathogen:
  • Mycelium - septate, branched & light pink to brown
  • Acervuli - simple globose and dark brown
  • Conidiophore - erect and hyaline
  • Conidia - hyaline, one celled, oval or oblong

Mode of spread and survival

  • Survives on crop debris as acervuli
  • Spores dispersed by rain splash

Epidemiology

  • RH - 100%
  • Temp - 21 to 29°C
Management:
  • Field sanitation - destruction of infected plant debris
  • Other host plant - S. torvum
  • Harvesting of fruits before they over ripe
  • Zineb or ferbam spray at 10 days interval
Source of Images:
http://www.infonet-biovision.org/default/ct/116/crops#_1793_903
http://www.extension.umn.edu/garden/diagnose/plant/vegetable/eggplant/fruitspots.html

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