Bondi Junction NSW, Australia
Fact Sheets
2021-09-08T03:16:30.1471412Z
   3
Sweetpotato little leaf (055)
Pacific Pests, Pathogens and Weeds
Pacific Pests, Pathogens and Weeds

Summary

  • Widespread distribution. Asia, Africa, Oceania. On sweetpotato and relatives. Occasionally, an important disease.
  • Veins on young leaves show clearly, side shoots grow, becoming bushy, erect, with small leaves.
  • Caused by bacteria-like organism in phloem tubes.
  • Spread by leafhoppers that feed on diseased plants then infect others after 20 days. More important in dry times. Storage root yields absent or very low.
  • Cultural control: plant only disease-free vines; do not plant near infected crops; remove affected plants when seen; collect and burn trash after harvest.
  • Chemical control: PDPs: derris, pyrethrum, or chilli; or synthetic pyrethroids.

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