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Horticultural crops :: Vegetables:: Tomato

Bacterial wilt : Ralstonia solanacearum

Symptom :

  • Rapid and complete wilting of plant.
  • Lower leaves drop before wilting .
  • Yellow brown discolouration of tissues.
  • White bacterial ooze from cut ends.

Infected plant

Wilting of plants

Causal organism :

  • Ralstonia solanacearum (Smith) Yabuuchi

Survival and Mode of Spread

Survival :

  • Infected plants and soil

Primary spread:

  • Infected plants

Secondary spread:

  • Wounds, soil and implements

Favourable conditions

  • High soil moisture.

Integrated Disease Management

  • Crop rotation
  • Disease free seedlings.
  • Restriction of irrigation.
  • Drenching with bleaching powder @ 4 kg/ac
  • Soil application of neem cake @ 100 kg/acre

Source of Information

  • https:www.apsnet.org
  • Crop production guide – Horticulture 2020

Acknowledgement

  • Photo courtesy by Dr.S. Vinodkumar
  • Dr.P.Renukadevi, Professor, Department of Plant Pathology, TNAU, Coimbatore.
  • Dr.N.Indra, Associate Professor, Department of Plant Pathology, TNAU, Coimbatore.

Updated on Jun 2023


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