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The onion thrips is thought to have originated in the Mediterranean region but is now found on all continents except Antarctica. [3] It infests a wide range of host plants that include onion, leek and garlic, brassicaceous plants such as cabbage, cauliflower and broccoli, asparagus, sugarbeet, melon, pumpkin, marrow and cucumber, strawberry, potato, tobacco, cotton and many fruiting and ...
Delia antiqua, commonly known as the onion fly, is a cosmopolitan pest of crops. The larvae or maggots feed on onions, garlic, and other bulbous plants.
Delia antiqua larvae, commonly known as the onion maggot, is a prominent agricultural pest on members of the Allium genus including onions (Allium cepa), garlics (Allium sativum), chives (Allium schoenoprasum), shallots (Allium cepa var. aggregatum), and leeks (Allium porrum). [14]
These pests commonly affect food crops like asparagus, tomatoes, and beans, but they also plague most houseplants and ornamentals, such as carnations, chrysanthemums, gladiolus, and pansies. Tips
A small proportion of the species are serious pests of commercially important crops. Some of these serve as vectors for over 20 viruses that cause plant disease, especially the Tospoviruses. Many flower-dwelling species bring benefits as pollinators, with some predatory thrips feeding on small insects or mites. In the right conditions, such as ...
Onions suffer from several pests and diseases. The most serious for the home gardener are likely to be the onion fly, stem and bulb eelworm, white rot, and neck rot. Diseases affecting the foliage include rust and smut, downy mildew, and white tip disease. The bulbs may be affected by splitting, white rot, and neck rot.
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