Bondi Junction NSW, Australia
Fact Sheets
Bean Pythium cottony leak (128)
Pacific Pests, Pathogens and Weeds
Pacific Pests, Pathogens and Weeds


  • Worldwide distribution. On beans, capsicum, cucumber, tomato, and causes damping off (see Fact Sheet no. 47).
  • Grey patches on leaves; fungal growth spreading to stems causing wilts; thick cottony growth rots pods in field and storage. Cucumber touching the soil rot.
  • Usually a minor disease, except during long rains.
  • Cultural control: allow air movement; avoid wounds; stake beans and cucumbers; improve drainage; use mulch; rotate with e.g., root crops; avoid harvesting in wet weather; for damping off (see fact sheet).
  • Chemical control: treat seed with fungicides: captan, matalaxyl or thiram; damping-off (see FS above).

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