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Variety traits

Sunflower growing season

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.

Sources8

Varieties of Sunflower 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.

Santos

Active

Helianthus annuus L. · Sunflower

NOVARTIS SEEDS

ES FR IT UA
7 records

MAS 85T

Protection expired

Helianthus annuus L. · Sunflower

MAS SEEDS

IT RO SK
6 records

MAS 817P

Active

Helianthus annuus L. · Sunflower

MAS SEEDS

IT RO UA
6 records

LG50550 CLP

Active

Helianthus annuus L. · Sunflower

Remy ROUANET

BG IT UA
7 records

LG5582

Active

Helianthus annuus L. · Sunflower

Remy ROUANET

IT UA
7 records

N4h471 Cl

Active

Helianthus annuus L. · Sunflower

NUSEED EUROPE

FR IT UA
7 records

Hysun 162 IT

Active

Helianthus annuus L. · Sunflower

PHILIPPE JOUVE

PT SK UA
6 records

Victory CL

Active

Helianthus annuus L. · Sunflower

Saaten Union, RO

RO UA
8 records

Tunca

Active

Helianthus annuus L. · Sunflower

LIMAGRAIN VERNEUIL HOLD.

ES UA
6 records

Stelaris CLP

Active

Helianthus annuus L. · Sunflower

Saaten Union Romania, RO

RO UA
6 records

NS Goliat

Active

Helianthus annuus L. · Sunflower

Institut za ratarstvo i povrtarstvo, Novi Sad

SK UA
7 records

MAS 85IR

Active

Helianthus annuus L. · Sunflower

MAS SEEDS

ES FR IT SK
4 records

ES Amis CL

Protection expired

Helianthus annuus L. · Sunflower

Tierry Andre

CZ IT SK UA
5 records

P64he117

Active

Helianthus annuus L. · Sunflower

PIONEER OVERSEAS CORPORATION

IT SK
6 records

Sunbrela

Terminated

Helianthus annuus L. · Sunflower

RAGT 2N S.A.S

IT UA
5 records

Rapid

Active

Helianthus annuus L. · Sunflower

Tsevma Volodymyr Mykolaiovych, Doroshevskyi Oleksandr Volodymyrovych,

IT UA
6 records

LG50486

Active

Helianthus annuus L. · Sunflower

Remy ROUANET

IT UA
5 records

Fortera

Active

Helianthus annuus L. · Sunflower

TRUESEEDS FRANCE

IT UA
4 records

LS Rugby

Active

Helianthus annuus L. · Sunflower

LABOULET SEMENCES

IT UA
4 records

Bonasol JMR

Active

Helianthus annuus L. · Sunflower

SEMILLAS BATLLE S.A.

IT UA
4 records

ES Alkora

Terminated

Helianthus annuus L. · Sunflower

Euralis Semences FR

FR IT
5 records

Meridies CL

Active

Helianthus annuus L. · Sunflower

SAATEN UNION ROMANIA S.R.L.

IT PT UA
4 records

M94S35

Active

Helianthus annuus L. · Sunflower

Mehmet Ali Keceli

BG IT UA
6 records

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