Variety traits
Allium cepa L.
The vegetation period of onion is calculated from mass emergence to the lodging of 75–85% of the leaves. This indicator determines maturity dates, potential yield, bulb storability, and the planning of agrotechnical practices.
In the reference 109 varieties crop Onion, where this is mentioned in the description.
The duration of onion vegetation varies depending on varietal characteristics and growing conditions. Early-maturing varieties complete their development cycle in 93–105 days, while mid-season and mid-late hybrids may require 116 to 135 days for full maturity.
The length of the period directly affects bulb weight: longer growth promotes nutrient accumulation and increased harvest size. However, prolonged vegetation due to excess nitrogen fertilizers hinders neck maturation, which reduces storability. Onion growth rates are significantly influenced by photoperiodism, planting density, and climatic conditions, which determine the intensity of foliage formation and the transition to bulb development.
General information about the subject — on the page Vegetation period.
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 cepa L. · Onion
ISI Sementi, I
Allium cepa L. · Onion
NICKERSON-ZWAAN B.V., NL
Allium cepa L. · Onion
ENZA ZADEN
Allium cepa L. · Onion
Seminis SVS Holland, NL
Allium cepa L. · Onion
Ger Beemsterboer
Allium cepa L. · Onion
WIJNKER THAAM
Allium cepa L. · Onion
Scott Hendricks
Allium cepa L. · Onion
Public domain
Allium cepa L. · Onion
Syngenta Seeds B. V.
Allium cepa L. · Onion
Skott Hendrics
Allium cepa L. · Onion
ISI SEMENTI S.P.A
Allium cepa L. · Onion
Daniel Maraldi
Allium cepa L. · Onion
Semo, CZ
Allium cepa L. · Onion
UNITED GENETICS SEEDS CO
Allium cepa L. · Onion
WIJNKER THAAM
Allium cepa L. · Onion
SYNGENTA SEEDS B.V.
Allium cepa L. · Onion
MAURIZIO BACCHI
Allium cepa L. · Onion
Bram van Staalduinen
Allium cepa L. · Onion
Paul Degreef
Allium cepa L. · Onion
MAURIZIO BACCHI
Allium cepa L. · Onion
ALLIUM SEEDS UK LTD
Allium cepa L. · Onion
MARALDI DANIELE
Allium cepa L. · Onion
NASRULLAEV NIYaZI MEH'EDDIN / ZOTOV MIHAIL VLADIMIROVICh / KIRSANOVA EKATERINA ALEKSEEVNA
Allium cepa L. · Onion
Petr Klapste