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Cultivation

Sunflower Sowing Date

Helianthus annuus L.

Optimal sunflower sowing is carried out when the soil at a depth of 5–8 cm warms up to +8…+12 °C, which ensures uniform emergence and efficient use of soil moisture.

In the reference 31 varieties crop Sunflower, where this is mentioned in the description.

In sunflowers, the growing point is elevated to the soil surface immediately upon germination, which determines its sensitivity to frost after the appearance of true leaves. Sowing in cold soil (below +8 °C) delays emergence for up to 3–4 weeks, leading to thinning of the crop and exposing seeds to pathogens and pests. With late sowing, when the soil temperature exceeds +15 °C, moisture loss from the seedbed occurs, leading to uneven emergence and causing critical growth stages to coincide with summer droughts.

The choice of sowing date is closely related to weed control: the optimal period should allow for pre-sowing cultivation to destroy early spring weeds, giving the crop an advantage during its slow growth stage. To prevent issues with synchronized development and pollination, it is recommended not to stretch the sowing of a single hybrid over a period exceeding 7–10 days, while taking into account regional climatic conditions and the risks of late spring frosts.

General information about the subject — on the page Sowing date.

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.

Helianthus annuus L. · Sunflower

Laboulet Semences, FR

FR
3 records

Islero

Active

Helianthus annuus L. · Sunflower

Interstate Seed Co.

ES
4 records

FD15E27

Active

Helianthus annuus L. · Sunflower

PACUREANU JOITA MARIASTANCIU DANILSTANCIU MARIA

RO
4 records

LG5650M

Terminated

Helianthus annuus L. · Sunflower

LIMAGRAIN GENETICS GRANDES CULTURES S.A.

IT
3 records

SY Levis

Active

Helianthus annuus L. · Sunflower

Syngenta Crop Protection AG, CH

FR
3 records

Zuhat

Active

Helianthus annuus L. · Sunflower

JOSE RAMON PEREZ MONREAL

UA
3 records

Veraflor

Active

Helianthus annuus L. · Sunflower

Rustica Prograin Genetique SA (FR)

FR
2 records

Atilla

Active

Helianthus annuus L. · Sunflower

Stupak Iryna IUriivna, Rusavskyi Vladyslav Leonidovych, Parii Myroslav Fedorovych, Parii IUliia Oleksandrivna, Kyryienko Serhii Oleksandrovych, Parii IAroslav Fedorovych, Parii Fedir Mykytovych,

UA
3 records

64A52

Terminated

Helianthus annuus L. · Sunflower

E.SCHWARTZ

ES
2 records

ZL-678V

Terminated

Helianthus annuus L. · Sunflower

Kutischeva Nataliia Mykolaivna, Scherban` Serhii Vasyl`ovych, Scherban` Nataliia Fedorovna, Lytovchenko Borys Kyrylovych, Riabota Oleksandr Mykolaiovych,

UA
2 records

Zaporiz`kyi 32

Terminated

Helianthus annuus L. · Sunflower

Parkhomenko Serhii Mykolaiovych, Nikitchyn Dmytro Ivanovych, Diadiura Valentyna Petrivna, Kutischeva Nataliia Mykolaivna, Scherban` Nataliia Fedorivna, Scherban` Serhii Vasyl`ovych, Riabota Oleksandr Mykolaiovych,

UA
1 record

ZL965V

Terminated

Helianthus annuus L. · Sunflower

Pershyna Liliia Vasylivna, Odynets` Serhii Ivanovych, Shudria Larysa Ivanivna, Kutischeva Nataliia Mykolaivna, Lytovchenko Borys Kyrylovych,

UA
2 records

Upsol veraflor

Protection expired

Helianthus annuus L. · Sunflower

Domaine Public (FR)

FR
1 record

SH-3322

Withdrawn

Helianthus annuus L. · Sunflower

PACIFICO

ES
1 record

Helianthus annuus L. · Sunflower

Cvejic, Sandra Dusanic, Nenad Jockovic, Milan Miklic, Vladimir Mykhno, Mykola Jocic, Sinisa

UA
2 records

FLORIMI

Active

Helianthus annuus L. · Sunflower

Burlov Viktor Vasylovych

UA
2 records

Chester

Active

Helianthus annuus L. · Sunflower

Kyrychenko Maryna Serhiivna, Babych Viktoriia Olehivna, Parii Myroslav Fedorovych, Parii IAroslav Fedorovych,

UA
2 records

Alfeo

Active

Helianthus annuus L. · Sunflower

APSOVSEMENTI S.P.A.

IT
1 record

LHA 455/44

Terminated

Helianthus annuus L. · Sunflower

LIMAGRAIN VERNEUIL HOLDING S.A.

IT
1 record

LG5047SX

Active

Helianthus annuus L. · Sunflower

1 record