Cabbage Maggot (Delia radicum) Pest Information Damage:

The sequence of female meiosis was investigated in two populations of the cabbage root fly (Delia radicum) and three populations of the onion fly (D. antiqua).

These results are compared with those for Mamestra configurata Wlk., Delia radicum (L.), and Athrycia cinerea Coq., which have similar overwintering habits.

Destructive soil insects include the cabbage root fly (Delia radicum) and the cabbage maggot (Hylemya brassicae), whose larvae can burrow into the part of plant consumed by humans.

It also helps defend the plant from leaf-chewing insects such as the red-legged grasshopper (Melanoplus femurrubrum) and the moth Evergestis rimosalis, and root-feeding insects like the cabbage maggot (Delia radicum).

The three species considered to be the main pests, (Delia radicum, D. floralis, and D. planipalpis), over-winter as pupae in the soil, emerging in the spring as adults which appear as small flies.

Delia floralis, commonly known as the turnip root fly or summer cabbage fly, is a cosmopolitan pest of crops.

The turnip is prone to clubroot and black rot (fungus diseases) and is attacked by such parasites as the plant louse, flea beetle and cabbage fly.

The larvae of the cabbage root fly sometimes attack the roots.

But along comes a cabbage root fly, whose larvae feed on the roots.

He then used a strong fleece to discourage cabbage root fly and pigeons.

Less susceptible than other brassicas to club root and cabbage root fly.

One scientific study said that simply having clover growing nearby cut the odds of cabbage root flies hitting the right plant from 36% to 7%.

This helps to stop attack from the notorious cabbage root fly that lays eggs at the base of brassicas.

This species resembles the closely related cabbage root fly in appearance though it is slightly larger at seven to eight millimetres long.

Sprinkle 4% calomel dust in each hole as a protection against club root disease and cabbage root fly.

Place a collar of felt around the stems of cabbage when planting out to protect from cabbage root fly.

The best method to sort them out, together with pigeons and cabbage root fly, is to net them with Environmesh (agralan.co.uk).

Provide solitary plants with individual defences, such as snail-proof rings of soot or grit, or brassica collars to foil cabbage root fly.

Horticultural fleece can protect brassicas from insects pests such as aphids, cabbage root fly carrot fly, flea beetle, onion fly and whitefly.

Delia radicum, known variously as the cabbage fly, cabbage root fly, root fly or turnip fly, is a pest of crops.

The sequence of female meiosis was investigated in two populations of the cabbage root fly (Delia radicum) and three populations of the onion fly (D. antiqua).

Destructive soil insects include the cabbage root fly (Delia radicum) and the cabbage maggot (Hylemya brassicae), whose larvae can burrow into the part of plant consumed by humans.

There’s also a range of traps and barriers, from sticky tapes for greenhouses to Enviromesh, a fabric hooped over vegetables to prevent flying pests such as cabbage root fly and onion fly getting to the leaves.

Fleece or fine netting can be used to cover crops to prevent flying pests, such as cabbage root fly, carrot fly, white fly, onion fly, flea beetle, vine weevil and aphids from reaching them.

An experiment showed that 36% of cabbage root flies laid eggs beside cabbages growing in bare soil (which resulted in no crop), compared to only 7% beside cabbages growing in clover (which allowed a good crop).

A new formula called Grow Your Own is also available, designed to control common pests including carrot root fly, cabbage root fly, leatherjackets, cutworms, onion fly, ants, sciarid fly, caterpillars, gooseberry sawfly, thrips, and codling moth.

An environmentally benign garlic-derived polysulfide product is approved for use in the European Union (under Annex 1 of 91/414) and the UK as a nematicide and insecticide, including for use for control of cabbage root fly and red mite in poultry.

Delia radicum, known variously as the cabbage fly, cabbage root fly, root fly or turnip fly, is a pest of crops.

The feeding spout was so arranged as to carry one half of the seed backwards after the earth had fallen into the channel ; a harrow was pinned to the beam; and by this arrangement one half of the seed would spring up sooner than the other, and so part of it escape the turnip fly.