Chilli Damping off: Pythium aphanidermatum
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The populations in nursery seedlings die due to this diseases
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Mycelium are hyaline and Aseptate and it has width size 5 micron
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Irregular mycelial fibres grown and thus produce irregular shape spores
Symptoms:
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Seedlings killed before emergence
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Water soaking and shrivelling of stem
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Factors favouring infection: Moist soils poordrainage 90-100% R.H soil temperature 20°C
- Impact of disease symptoms shown at after sowing of seeds in seed beds
- It will reduce the seed germination percentage
- it affects the young seedlings and their stems
- lodging of seedlings due to weakening stems
- disease affected seedling are seen light brownish colour
- diseases spread through seeds and soil.
Management:
- Soil drenching with Copper oxychloride 0.25%
- avoid shade places for nursery establishment
- use recommended seed rate
- avoid flooding type of irrigation and maintain optimum moisture level in the nursery
- use Thiram or Capton @ 4g/ kg of seeds for seed rate
Source-
- TamilNadu Agritech Portal
