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Clubroot in Pak Choi

How to identify and treat clubroot in Pak Choi.

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Pak Choi care requirements

water
Consistent moisture; water deeply 1–2 times per week; keep soil evenly moist but not waterlogged
soil
Rich, well-draining soil with high organic matter; pH 6.0–7.5
light
Full sun to partial shade; 6 hours of direct sun optimal; can tolerate shade in warm seasons
symptoms

Symptoms to look for in Pak Choi

  • fiber_manual_recordSwollen, distorted roots
  • fiber_manual_recordWilting in warm weather
  • fiber_manual_recordStunted, yellowing plants
help

Common causes in Pak Choi

Caused by Plasmodiophora brassicae. Persists in soil for 20+ years. Favoured by acidic, wet soils.

healing

How to treat clubroot in Pak Choi

No chemical cure. Remove all affected plants and roots. Lime soil to raise pH above 7.2.

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Preventing clubroot in Pak Choi

Crop rotation (7+ years). Liming soil. Resistant varieties. Good drainage.