Variety traits
Helianthus annuus L.
The time from full emergence to the onset of harvest maturity of seeds, measured in days and depending on the maturity group and the sum of active temperatures.
In the reference 678 varieties crop Sunflower, where this is mentioned in the description.
The duration of the sunflower growing season covers the period from full emergence to the stage of physiological maturity, determined by the darkening of seeds, the drying of heads, and a seed moisture content of 10–15%. Plant development is assessed by interphase periods in accordance with the international BBCH scale.
The crop is divided into maturity groups ranging from ultra-early (80–90 days) to mid-late (116–135 days or more). The biological requirement for the sum of active temperatures above +10°C correlates with the duration of the period: early-maturing varieties require about 2000°C, while mid-maturing varieties require about 2150°C.
The length of the growing season directly affects yield: varieties with a longer formation period are potentially more productive but require a greater amount of heat. Proper selection of a maturity group allows agronomists to optimize crop rotation and avoid the impact of drought or frost.
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.
Helianthus annuus L. · Sunflower
RAGT 2N S.A.S
Helianthus annuus L. · Sunflower
RAGT 2N S.A.S
Helianthus annuus L. · Sunflower
Remy ROUANET
Helianthus annuus L. · Sunflower
Maisadour Semences, FR
Helianthus annuus L. · Sunflower
SEEDTEC INTERNATIONAL
Helianthus annuus L. · Sunflower
CEREOL UNGHERIA
Helianthus annuus L. · Sunflower
KOIPESOL SEMILLAS, S.A.
Helianthus annuus L. · Sunflower
SEMILLAS FITO' S.A.
Helianthus annuus L. · Sunflower
JOSE RAMON PEREZ MONREAL
Helianthus annuus L. · Sunflower
Rustica Prograin Genetique
Helianthus annuus L. · Sunflower
RUSTICA (FR)
Helianthus annuus L. · Sunflower
Institut za ratarstvo i povrtarstvo, Novi Sad
Helianthus annuus L. · Sunflower
Institut za ratarstvo i povrtarstvo, Novi Sad
Helianthus annuus L. · Sunflower
Institut za ratarstvo i povrtarstvo, Novi Sad
Helianthus annuus L. · Sunflower
May Agro Seed Industry and Trade Corporation
Helianthus annuus L. · Sunflower
VENTUROLI SEMENTI S.R.L.
Helianthus annuus L. · Sunflower
BORODIN SERGEJ GEORGIEVICh / ILATOVSKIJ VLADIMIR PLATONOVICh / DETSYNA ALEKSANDR ALEKSANDROVICh / PIGROVA SVETLANA KUZ'MINIChNA / POLTORAKA ALEKSANDR ALEKSEEVICh / BYaTETS VIKTOR IVANOVICh
Helianthus annuus L. · Sunflower
Euralis Semences
Helianthus annuus L. · Sunflower
PIONEER OVERSEAS CORPORATION
Helianthus annuus L. · Sunflower
NuSeed Americas
Helianthus annuus L. · Sunflower
RAGT 2N S.A.S
Helianthus annuus L. · Sunflower
LABOULET SEMENCES
Helianthus annuus L. · Sunflower
Jean Pierre Dufourcq
Helianthus annuus L. · Sunflower
INTERDOR, FR