Bondi Junction NSW, Australia
Fact Sheets
2021-09-08T03:17:13.6828030Z
   7
Tomato early blight (211)
Pacific Pests, Pathogens and Weeds
Pacific Pests, Pathogens and Weeds

Summary

  • Worldwide distribution. On tomato, and many others in the same family, including potato, capsicum, eggplant, and some wild hosts in the potato family. An important disease.
  • Brown spots on the older leaves with yellow margins, and dark brown rings. Leaves dry up and fall. Sunken spots on the fruit.
  • Wind and rain spread spores; survival in debris and seed.
  • Cultural control: 2-3-year rotation, avoid planting near old crops; save seed only from disease-free plants; remove 'volunteers', and weeds; check seedlings for disease; space plants (60-90cm); avoid overhead irrigation; ensure good nutrition; collect and burn debris after harvest; check for tolerant varieties.
  • Chemical control: protectants - copper, mancozeb, or chlorothalonil (protectants); or strobilurins (systemics).

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