Damping-off diseases

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McKenzie, LandCare Ltd., Courtesy of EcoPort
Is this a Minor Pest?
Minor Pest Title

Damping-off diseases (Pythium spp., Rhizoctonia solani, Fusarium spp.)

Minor Pest Description

In crucifers, several fungi (e.g. Pythium spp., Rhizoctonia solani, Fusarium spp.) can cause damping-off diseases.


Characteristic is wirestem of seedlings caused by Rhizoctonia solani in the seedbed, bottom rot and head rot in the field, and storage and root rot of horseradish, radish, rutabaga and turnip.


Damping-off diseases are favoured by cool, wet soil conditions.

Minor Pest What to do.
  • Use certified disease-free seeds. If using own seed, treat seeds with hot-water. For more information on Hot-water seed treatment click here.
  • Practise proper irrigation, avoid planting in wet, cold soils
  • Plant on raised beds to reduce moisture content in the root zone and provide the appropriate drainage in the field to prevent waterlogged conditions
  • Practise crop rotation: seedbeds and production fields should not have had crucifers for at least 3 years. All seedlings with wirestem symptoms should be discarded. During cultivation, take care to avoid throwing soil into plant heads.
Minor Pest Position
Minor Pest Firstcontent
Pest Type
Common names; Wilt, Damping-off, Seedling blight, Root rot, Rhizoctonia damping-off, Rhizoctonia
Host Plants
Cabbage,Kales,other Brassicas- Revised
Minor Pest secondContent