Bondi Junction NSW, Australia
Fact Sheets
2021-09-08T03:11:11.0598275Z
   1
Cassava brown leaf spot (095)
Pacific Pests, Pathogens and Weeds
Pacific Pests, Pathogens and Weeds

Summary

  • Worldwide. Only recorded from cassava. A minor disease.
  • Spots are roundish, brown with dark borders, up to 15 mm, limited by veins, often with a yellow halo. Leaves turn yellow and fall. Mostly, on lower leaves, from 5-6 months after planting. Root losses reported up to 30%, but in the Pacific the effect appears to be small, but not tested.
  • Spread in wind and rain, and on cuttings.
  • Cultural control: practice crop rotation; wide spacing; plant so that the crop matures in the drier season; do not plant new crops next to old; tolerant varieties; collect and burn trash after harvest. 
  • Chemical control: not recommended.

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