- Worldwide distribution. On fruit trees, and many vegetables. An important pest.
- Damage: (i) feeds on sap causing distortions and wilts; (ii) produces honeydew leading to sooty moulds; and (iii) spreads more than 100 viruses.
- Adults, 2 mm long, greenish-yellow, sometimes with brown tinge, winged or wingless, giving birth without fertilisation (in the tropics). No males.
- Spread by winged forms, and also in wind and storms, and trade in plants.
- Natural enemies: predators and wasp parasitoids (Aphidius and Aphelinus).
- Cultural control: weed; certified seed (beans); avoid planting down-wind from infested crops; remove volunteers; grow flowering plants to attract wasps; inspect crops often - remove infested plants or leaves (or spray); use plastic mulches, row covers; control ants with boiling water; collect and destroy debris after harvest.
- Chemical control: PDPs (chilli, derris, neem, pyrethrum); soap solution, white or horticultural oils. Note, synthetic pyrethroids will kill predators and parasitoids (but useful against ants).
Pacific Pests, Pathogens, Weeds & Pesticides
Green peach aphid (350)
Photo 1. Adult, wingless, green peach aphid; the white remains of the skin of the last moult remain attached to two aphids.
Green peach aphid
AUTHOR Grahame Jackson
1Information from Swaine G (1971) Agricultural Zoology in Fiji. Her Majesty's Stationery Office. London; and CABI (2016) Myzus persicae (green peach aphid) Crop Protection Compendium (https://www.cabi.org/cpc/datasheet/35642); and Waterhouse DE, Sands DPA (2001) Classical biological control of arthropods in Australia, ACIAR Monograph no. 77, 560pp.; and from Capinera JL (2020) Myzus persicae (Sulzer). Featured Creatures. Entomology & Nematology. UF/IFAS, University of Florida. (http://entnemdept.ufl.edu/creatures/veg/aphid/green_peach_aphid.htm). Photos 1-6 Mani Mua, Sigatoka Research Station, Fiji.
Produced with support from the Australian Centre for International Agricultural Research under project PC/2010/090: Strengthening integrated crop management research in the Pacific Islands in support of sustainable intensification of high-value crop production, implemented by the University of Queensland and the Secretariat of the Pacific Community.