Pests
Allium fistulosum L.
The main pest of Welsh onion is the onion thrips, which causes tissue damage and reduces the marketability of the greens. The pest is particularly dangerous in regions with hot and dry climates.
In the reference 4 varieties crop Welsh onion, where this is mentioned in the description.
Onion thrips damage Welsh onion by sucking sap from the cells of the epidermal tissues. Characteristic whitish spots, silvery streaks, and dashes appear on the leaves of the crop, accompanied by the secretion of excrement in the form of a sticky coating.
During mass reproduction of the pest, deformation, curling, and subsequent drying of the leaves occur, which is critical for produce grown for greens. Thrips also act as vectors for viral diseases, which exacerbates the severity of the damage.
No specific resistance genes to this pest have been identified in Welsh onion breeding. Variety tolerance is more often associated with morphological traits, such as the presence of a dense waxy bloom on the leaf surface.
General information about the subject — on the page Thrips.
Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.
Allium fistulosum L. · Welsh onion
SEMINIS VEGETABLE SEEDS, NL
Allium fistulosum L. · Welsh onion
Allium fistulosum L. · Welsh onion
Kaneko Seed CO.Ltd (JP)
Allium fistulosum L. · Welsh onion