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D. dipsaci is a microscopic worm about 1.5 mm long. It penetrates plants from either the soil or infested planting material and occasionally from seeds. They live between the cells of onion or garlic leaves and between the scales of the bulbs where they feed on cell sap and multiply.
The larvae damage bulbs of onions, garlic, chives, shallots, leeks, and flowering plants. The first generation of larvae is the most harmful because it extends over a long period owing to the females' longevity and occurs when the host plants are small. Seedlings of onion and leek can be severely affected as can thinned-out onions and shallots. [3]
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 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).
Thyme, nasturtiums, and onion showed good resistance to cabbage worm, weevil and cabbage looper. [28] Broccoli: Brassica oleracea: Lettuce: Beets, dill, onions, [6] tomato, [31] turnip, [32] clover [31] Broccoli as a main crop intercropped with lettuce was shown to be more profitable than either crop alone. Turnip acts as a trap crop. [32]
Here's how to grow onions in your own garden, including growing onions from seed and growing from food scraps, and when to pick them in the spring.
This worm might not look any different than a common one wriggling in the soil, but this pest − often given nicknames "crazy worms, snake worms, Alabama jumpers, Jersey wrigglers" for their ...
The pest was first detected in China in the southwest province of Yunnan in January 2019 [24] (or June 2019). [22] Through 2019, the pest infested a total of 26 provinces. The armyworm is expected in 2020 to hit China's Northeast wheat belt. A report issued by the Ministry of Agriculture and Rural Affairs rates the situation as "very grave". [25]
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