Bondi Junction NSW, Australia
Fact Sheets
2021-09-08T03:16:37.8843001Z
   2
Sweetpotato West Indian weevil (119)
Pacific Pests, Pathogens and Weeds
Pacific Pests, Pathogens and Weeds

Summary

  • Widespread distribution. Central and South America, Caribbean, parts of US and Asia. An important pest.
  • Adults lay eggs in base of stem ('crown') and in storage roots, and larvae do the damage by making tunnels. Same damage as sweetpotato weevil (Cylas).
  • Does not fly; crawls from weedy borders.
  • Spreads in cuttings and storage roots, same as Cylas.
  • Cultural control: early, deep rooting varieties; plant only tip cuttings; remove wild morning glory; hill-up, covering cracks during dry times; ideally, make one-time harvest; 3-4-year crop rotation; after harvest, collect and destroy vines and infested storage roots.
  • Chemical control: treat vines (bifenthrin); treat plants in field every 3-4 weeks (bifenthrin or fipronil).

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