Cabbage Aphid

Cabbage Aphid

 

(Brevicoryne brassicae), an insect of the family Aphididae, of the order Homoptera. Adult aphids, which measure approximately 2 mm long, are green with a grayish white waxy film. The females are winged or wingless; the males are winged. Cabbage aphids are widespread. They cause damage to cultivated cruciferous plants, particularly cabbage and rutabaga. In the USSR they are especially harmful in the south. The eggs of the cabbage aphid winter (sometimes the females and larvae as well). In the spring the larvae hatch and develop into wingless fundatrices, which produce parthenogenetically up to 40 larvae. The latter turn into wingless fundatrigeniae, which reproduce similarly until fall, yielding between eight and 20 generations. Initially, cabbage aphids live on cruciferous weeds and on cabbage and rutabaga seeds. In midsummer, in addition to the fundatrigeniae, winged migrantes develop, which fly to cabbage and other cultivated cruciferous plants. The sexual generation appears in autumn; eggs, which will winter, are laid by the fertilized females on cabbage stumps and weeds.

The cabbage aphid, by feeding on plant juices, causes leaf decolorization and curl, arresting the development of the head. Measures taken to control this insect include destroying weeds, tilling after the harvest, using phosphorous and potash fertilizers, treating plants with insecticides, and placing crucifers near the seeds of plants, such as carrot, parsnip, and fennel, which attract beneficial insects. These insects, such as the hover fly, destroy the cabbage aphid.

L. G. TER-SIMONIAN

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Positive effects of nitrogen on aphid fecundity and nymphal development rates, but not on lifespan, have been reported for the cabbage aphid, Brevicoryne brassicae L.
The feeding pace of adults on coriander aphid was maximum (100.8, 116.2, 148, 152.8 and 160.2) followed by spinach and pea aphids (on 12th to 16th day, respectively), whereas cabbage aphid was consumed less in number during all five days, respectively (Fig.
Long-term effect of insecticides on Diaeretiella rapae (M'lntosh), a parasitoid of cabbage aphid. Pestic.
Canola crop is damaged by different kinds of pests including weeds, insect pests and disease pathogens (McNairn et al., 2014; Saeed and Razaq, 2014; Jabran et al., 2010a; 2008), and cabbage aphid (Brevicoryne brassicae) is one of these pests (Saeed and Razaq, 2014; Razaq et al., 2012).
White fly and cabbage aphid can build up over the summer and survive the winter ready to move on to spring crops if the cycle is not broken.
"A strategy for combating pyrethroid resistance needs to cover all spring and early summer insecticide applications, regardless of their intended target, as pollen beetles are likely to be exposed to insecticides applied against other pests such as cabbage aphid, seed weevil, stem weevil and bladder pod midge."
They are not an easy vegetable to grow, because they take up a lot of space and can suffer attacks from cabbage root fly, cabbage white butterflies and mealy cabbage aphid.
The turnip aphid, Lipaphis erysimi, resembles the cabbage aphid, but lacks a waxy covering and is pale green.