Pests in Wheat - In Crop
Russian wheat aphid
Constraint – Russian wheat aphid
Russian wheat aphid is a 2 mm long, slender bodied aphid
It is usually covered in a waxy white coating, and varies in colour from pale yellowish-green to grey-green
Leaves infested with Russian wheat aphid develop continuous white, yellowish and red streaks along the length of leaf
Toxins injected by the aphid during feeding destroy chlorophyll and prevent carbohydrate formation, with heavy infestations killing the plant
If not controlled Russian wheat aphid can cause up to 80% yield loss in wheat
Russian wheat aphid has not yet been found in Australia, but poses a major threat to the Australian grains industry. The global distribution of Russian wheat aphid continues to expand, aided by the ease of international travel.
Links and Resources
DPI NSW - Russian wheat aphid
Information on detection, identification, and damage caused, as well as the threat to the Australian grain industry. Published 2011.
I Spy Manual - Russian wheat aphid
Page 84. Description, confused with/similar to, distribution and means of spread, host range, damage, surveillance, and reporting protocol. Published 2012.