Bondi Junction NSW, Australia
Fact Sheets
2021-09-08T03:10:54.4217241Z
   2
Cabbage ring spot (286)
Pacific Pests, Pathogens and Weeds
Pacific Pests, Pathogens and Weeds

Summary

  • Worldwide distribution. In sub-tropics and temperate areas. On cabbage and other brassicas. An important disease.
  • Spots, angular, dark with light centres up to 20 mm, with yellow halos, and black spore bodies. Early death of leaves; layers of leaves removed in storage.
  • Spread as spores, blown in wind and rain.
  • Cultural control: nursery far from production areas; nursery hygiene, soilless or pasteurised soil; 2-3-year crop rotation; avoid overlapping crops; weed; collect and burn trash after harvest.
  • Chemical control: chlorothalonil, mancozeb, copper. Treat seed: thiram or hot water (50°C for 30 mins.).

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