Agritech Archive
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Agritech Archive

Production · Protection · Nutrients · Water
In here

Mode of spread and survival

  • First phase - blight on young seedlings
  • Stem - girdled slightly above the soil line, plant topples and dies
  • Stem lesion - dark brown, becoming grey in the centre as pycnidia develops
  • Leaf - irregular brown spots
  • Fruits – soft, watery & decays
  • Finally black, mummified as pycnidia develop abundantly over the surface
  • Pycnidia - with or without beak, brown to black
  • Conidiophores - hyaline, simple or branched,
  • Conidia - hyaline, one celled and subcylindrical
  • Stylophores - filiform, curved, hyaline, septate
  • Seed borne
  • Spread by rain splashes, implements and insects
  • Survives in infected plant debris in soil

Epidemiology

  • Temp - 29 ° C (fungal growth)
  • Storage rot of fruits is maximum at 25 ° C
  • Seed treatment - hot water @ 50oC for 30 min
  • Nursery - 0.2 % difolatan or captan 0.2% @ weekly interval
  • Field - Zineb 0.2 %, Bordeaux mixture 0.8%
Soft watery massWatery decayMummified brinjal