Iregi Szurke Csikos
ActiveHelianthus annuus L. · Sunflower
HU
3 records
Cultivation
Sunflower Plant Density
Helianthus annuus L.
A critical factor in sunflower yield that determines plant access to moisture and nutrients. Optimal seeding density depends on hybrid characteristics, moisture levels, and planned agronomic practices.
In the reference 247 varieties crop Sunflower, where this is mentioned in the description.
Excessive sunflower plant density leads to a decrease in 1000-seed weight, as well as a reduction in head diameter and oil content. Overly high plant density results in plant deformation, "stretching," uneven ripening, an increased risk of disease development, and damage to the crop during harvesting.
The seeding rate varies depending on regional moisture levels: from 35–45 thousand plants per hectare in arid zones to 50–60 thousand plants per hectare in conditions with sufficient moisture or on irrigated plots. When calculating the field rate, an adjustment for field emergence is taken into account, which is usually 10–25% lower than laboratory germination, as well as an 8–10% adjustment needed when planning mechanical harrowing after emergence.
General information about the subject — on the page Planting density.
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.
Demetra
ActiveHelianthus annuus L. · Sunflower
RO
3 records
MAS 880L
ActiveHelianthus annuus L. · Sunflower
SK
2 records
M0822
TerminatedHelianthus annuus L. · Sunflower
HU
2 records
G-101
ActiveHelianthus annuus L. · Sunflower
POWERSUN
ActiveHelianthus annuus L. · Sunflower
UA
2 records
Zaporiz`kyi 32
TerminatedHelianthus 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
Sirena (MS)
ActiveHelianthus annuus L. · Sunflower
David Morgford
UA
2 records
RA 1004049
TerminatedHelianthus annuus L. · Sunflower
RAGT 2N S.A.S
IT
1 record
NKARMONY
Protection expiredHelianthus annuus L. · Sunflower
SYNGENTA SEEDS AG, CH
FR
1 record
Mir
TerminatedHelianthus annuus L. · Sunflower
Pacific Seeds Pty Ltd
IT
1 record
LHA 364/42
ActiveHelianthus annuus L. · Sunflower
LIMAGRAIN EUROPE S.A.
IT
1 record
LHA6269/34
ActiveHelianthus annuus L. · Sunflower
LIMAGRAIN EUROPE S.A.
IT
1 record
Kubans`kyi -930
Application submittedHelianthus annuus L. · Sunflower
Shapovalova Liubov Hennadiivna, Honcharov Serhii Volodymyrovych, Holovin Anatolii Vasyl`ovych, Bochkar`ov Mykola Ivanovych, Sliusar Emiliia L`vivna, Hrydniev Oleksii Kuz`mich, Sharyhina Mariana L`vivna, Savchenko Valentyna Dem'ianivna, Bochkovoi Anatolii
UA
1 record
Kh 503 B
TerminatedHelianthus annuus L. · Sunflower
Shepilov Borys Petrovych, Popova Ol`ha Andriivna, Petrenkova Vira Pavlivna, Veselyi Vitalii Oleksandrovych, Kuzmyshena Nadiia Viktorivna, Syvenko Valentyna Ivanivna, Alad`ina Zoia Kyrylivna, Makliak Kateryna Mykolaivna, Kyrychenko Viktor Vasylovych,
UA
2 records
IS 7116
TerminatedHelianthus annuus L. · Sunflower
Interstate Seed Co.
ES
1 record
Inra 4701
Protection expiredHelianthus annuus L. · Sunflower
INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR
FR
1 record
HYSUN232 HO
WithdrawnHelianthus annuus L. · Sunflower
Advanta Seed International
PT
1 record
Dozor
TerminatedHelianthus annuus L. · Sunflower
Kusch V"iacheslav Stepanovych, Pershyna Liliia Vasylivna, Kutischeva Nataliia Mykolaivna, Chekhov Anatolii Vasyl`ovych, Dymytrov Heorhii Dem"ianovych, Skakun Vadym Mykhailovych,
UA
2 records
Asedo
ActiveHelianthus annuus L. · Sunflower
Tovarystvo z obmezhenoiu vidpovidalnistiu "KMK AHRO"
UA
2 records
Astun
ActiveHelianthus annuus L. · Sunflower
Skakunenko, Vladyslava
UA
2 records
8Kh463KL
TerminatedHelianthus annuus L. · Sunflower
Steve Thompson
UA
2 records
SULIKO 777
ActiveHelianthus annuus L. · Sunflower
Karpenko Oleksandr Oleksandrovych, Luk'ianchyk IUrii Ivanovych,
UA
2 records
TORDILLO
WithdrawnHelianthus annuus L. · Sunflower
NORTHRUP KING
ES
1 record