Cultivation

Open-field cultivation of Welsh onion

Allium fistulosum L.

The cultivation of Welsh onion in open-field conditions is aimed at stimulating vegetative growth and preventing bolting. The crop is characterized by high frost resistance and sensitivity to waterlogging, requiring protection from soil compaction and intense sunlight.

In the reference 13 varieties crop Welsh onion, where this is mentioned in the description.

When cultivating Welsh onion in the open field, site selection must exclude flooding and water stagnation, as the crop is extremely sensitive to waterlogging. Unlike many vegetables, Welsh onion develops better in partial shade, as bright sunlight contributes to the coarsening of the leaves and triggers premature bolting. It is important to avoid planting after other onion species to prevent the spread of common pathogens.

In open-field conditions, agronomic practices are focused on extending the vegetative cycle. To obtain marketable green onions, methods for bolting prevention are applied, including early sowing dates, as well as hilling techniques in furrows to form a blanched pseudostem. Perennial cultivation requires regular rejuvenation of the clumps through division, as excessive growth leads to a decline in yield.

General information about the subject — on the page Open field.

Sources7

Varieties of Welsh onion mentioned in the description

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.