Bondi Junction NSW, Australia
Fact Sheets
2021-09-08T03:10:01.8207194Z
   3
Avocado sunblotch (368)
Pacific Pests, Pathogens and Weeds
Pacific Pests, Pathogens and Weeds

Summary

  • Worldwide distribution. In Australia, but NOT recorded in Pacific island countries.
  • Sunken yellow, irregular streaks on leaves and fruit - similar to sunburn, hence the name. Streaks on young stems better indicator of disease. Also, regular cracking on bark of older branches.
  • Some trees symptomless and produce 100% infected seed.
  • Damage: large fruit reduction whether trees show symptoms or not.
  • Spread: (i) natural root-to-root grafts in field; (ii) budwood from infected trees onto healthy root stocks; (iii) pruning tools; (iv) healthy scions grafted onto infected (symptomless) rootstocks.
  • Cultural control: ASBVd present (i) use root stocks and scions from registered sources; (ii) monitor for ASBVd symptoms in field; (iii) if seen, remove tree and test remainder; (iv) disinfect tools using 1.5% sodium hypochlorite (in nursery and field); (v) note, pruning height of mature trees may activate ASBVd.
  • Chemical control: Not appropriate.

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