Czerniakowska
ActiveAllium cepa L. · Onion
KARPIN'SKA STANISLAV
UA
2 records
Variety traits
Keeping quality — onion
Allium cepa L.
The keeping quality of onions is defined as the marketable yield expressed as a percentage of the initial mass after a storage period. A key indicator of suitability for long-term storage is the dry matter content in the bulb, with an optimal level of 17–22%.
In the reference 147 varieties crop Onion, where this is mentioned in the description.
The evaluation of keeping quality in the variety testing system is conducted on a five-point scale, where high keeping quality corresponds to a marketable yield of more than 90%, and low — less than 75%. The genetic potential of a variety determines the limits of suitability: southern cultivar types usually have a shorter dormancy period compared to varieties specialized for winter storage.
The most important agrotechnical condition for ensuring keeping quality is balanced mineral nutrition. Excess nitrogen in the second half of the growing season prevents the full maturation of the bulb neck, promoting the development of rots, while potassium fertilizers contribute to the formation of dry outer scales.
Technological maturity, necessary for successful storage, occurs at mass lodging of the tops (about 70%). Subsequent high-quality drying of the bulbs is a mandatory step that minimizes the risk of infection with neck and bacterial rots and ensures the preservation of marketable qualities until spring.
General information about the subject — on the page Keeping quality.
Varieties of 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.
Kira
ActiveAllium cepa L. · Onion
ISI SEMENTI SPA
IT
2 records
PX 07713119
ActiveAllium cepa L. · Onion
Scott Hendricks
UA
3 records
Cassiopea
ActiveAllium cepa L. · Onion
Lydon Lewis
UA
2 records
SV6646NW
ActiveAllium cepa L. · Onion
Scott Hendricks
UA
5 records
Akado
ActiveAllium cepa L. · Onion
Neil Alcock
UA
3 records
Preset
ActiveAllium cepa L. · Onion
HAZERA SEEDS B.V. / HAZERA SEEDS B.V.
UA
4 records
The Kelsae
ActiveAllium cepa L. · Onion
I.C.I.UNITED KINGDOM LTD
DE
2 records
Goliat
ActiveAllium cepa L. · Onion
(Martinovics Laszone), ( Gubicza Jozsefne),
HU
UA
3 records
Fasto
ActiveAllium cepa L. · Onion
Sheila Adimargono
UA
3 records
Pocono
ActiveAllium cepa L. · Onion
Scott Hendricks
UA
3 records
Dormo
ActiveAllium cepa L. · Onion
Willem van Haerke
UA
3 records
Centurion F1
ActiveAllium cepa L. · Onion
Ger Bimsdeboer
SI
UA
2 records
Lamyca
ActiveAllium cepa L. · Onion
MAURIZIO BACCHI
UA
3 records
Bolero
ActiveAllium cepa L. · Onion
Petr Klapste
UA
2 records
Copper star
ActiveAllium cepa L. · Onion
United Genetics, I
PT
3 records
Tosca
ActiveAllium cepa L. · Onion
Petr Klapste
UA
2 records
Retano
ActiveAllium cepa L. · Onion
HAZERA SEEDS B.V.
UA
2 records
Attika
ActiveAllium cepa L. · Onion
Cora Seeds SRL, I
HU
2 records
Kaptiva
ActiveAllium cepa L. · Onion
CORA SEEDS S.R.L
HU
UA
2 records
Albachiara
ActiveAllium cepa L. · Onion
MARALDI DANIELE
IT
2 records
Snowball
ActiveAllium cepa L. · Onion
John Constable
UA
3 records
Valenciana
TerminatedAllium cepa L. · Onion
Zuhair Bibi
UA
2 records
Redrover
ActiveAllium cepa L. · Onion
HAZERA SEEDS B.V.
UA
2 records