Bondi Junction NSW, Australia
Fact Sheets
2021-09-08T03:10:53.3228907Z
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Cabbage (mustard) aphid (332)
Pacific Pests, Pathogens and Weeds
Pacific Pests, Pathogens and Weeds

Summary

  • Worldwide distribution. On plants in cabbage family and related weeds. An important pest.
  • Infestations cause: (i) curling, yellowing and stunting, especially mustards; (ii) honeydew that spoils quality; and (iii) spread of viruses.
  • Adults 1.7 mm long. Wingless - greenish-yellow, covered in fine wax, with green bands along top of the body, and dark antennae. Winged - shiny black heads and prothorax (segment behind head), and green abdomen. In tropics, females give birth to living young without mating.
  • Spread by winged forms in wind currents.
  • Natural enemies: many predators and parasitoid wasps (e.g., Diaeretiella, Aphidius, Aphelinus).
  • Cultural control: nursery hygiene: clean trays, pasteurise soil or use soilless mixes; avoid planting next to, or down-wind from infested crops; weed; remove infested leaves; destroy ant colonies with boiling water (or insecticides); collect and destroy debris after harvest.
  • Chemical control: (i) PDPs (derris, chilli, garlic, neem, pyrethrum); (ii) soap solution, horticultural or white oils (see Fact Sheet no. 56). Avoid broad-spectrum products. Only use e.g., synthetic pyrethroids to kill ants.

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