Proceedings GRDC Update – Wagga Wagga. The most common cauliflower pests are aphids, flea beetles, slugs and snails, leaf hoppers, and several insect larva. 2012. Cabbage aphids, sometimes called mealy aphids, are small white bugs that feed on brassica crops in large numbers. Cabbage aphid are widely distributed and found in all states of Australia. Cabbage aphids are usually found on the terminal flowering spikes. Two widespread species in Australia are the cotton aphid and the cabbage aphid, and because of their wide distribution on the continent, they are also common garden pests. Monitor for cabbage aphids weekly from late winter onwards, but especially during flowering and grain fill. Damage :Cabbage aphids … Pirimicarb has little impact on beneficial insects compared with broad-spectrum chemicals. Consider adding a wetting agent to the spray mix to help the insecticide penetrate the aphid’s waxy surface. Parry HR, Macfadyen S and Kriticos DJ. Sow at recommended times; earlier sown crops usually have a greater incidence of viral infection. Other products may perform as well as or better than those specifically referred to. Crops that are not moisture stressed have a greater ability to compensate for aphid damage and will generally be able to tolerate far higher infestations than moisture stressed plants before a yield loss occurs. Department of Agriculture, Western Australia. Farmnote 440. The aphid does not infest noncruciferous crops but can survive on related weed species when cole crops are not in the field. When plants become unsuitable or overcrowding occurs, the population produces winged aphids (alates), which can migrate to other plants or crops. Rotating chemical groups and taking advantage of biological control are essential to extend the useful life of the available chemistries. The influence of water deficiency on the relationship between canola (Brassica napus L.), and two aphid species (Hemiptera: Aphididae), Lipaphis erysimi (Kaltenbach) and Brevicoryne brassicae (L.). The cabbage aphid belongs to the genus Brevicoryne. Effects of aphid feeding and associated virus injury on grain crops in Australia. Cabbage aphids are bluish-grey in colour with a pale powdery waxy coating. 2014. See, This article was compiled by Paul Umina (, PestNotes are information sheets developed through a collaboration between, http://cesaraustralia.com/assets/Uploads/wingedaphids.pdf. Turnip mosaic virus: potential for crop losses in the grain belt of New South Wales, Australia. Viruses infecting canola (Brassica napus) in south-west Australia: incidence, distribution, spread and infection reservoir in wild radish (Raphanus raphinistrum). The cabbage looper caterpillar is a light yellow-green with four white stripes running down the length of its body, and it is so named because, like an inchworm, it has legs on its front and rear ends, but none in the middle. Cabbage aphid are widely distributed and found in all states of Australia. Alternative weed hosts include mustard, wild radish and wild turnip. … The ability to transmit particular viruses differs with each aphid species and viruses may be transmitted in a persistent or non-persistent manner (see below). DAFWA. Aphids on the world’s crops: an identification and information guide. Ensure final herbicide application to control weeds is at least 10-14 days before sowing and Brassica weeds are controlled within at least 20 m of the crop. Cereal Aphids Fact Sheet (Northern Region). 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