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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.

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.

MAS 97 A

Active

Helianthus annuus L. · Sunflower

Oliv"ie Ladsus

BG ES FR HR HU IT +1
19 records

LG 56.65 M

Active

Helianthus annuus L. · Sunflower

Tuson Jean-Mark

BG FR HR IT RO SK +1
18 records

LG 5485

Active

Helianthus annuus L. · Sunflower

Remy ROUANET

BG ES FR IT SK UA
15 records

LG 5633 CL

Active

Helianthus annuus L. · Sunflower

Remy ROUANET

AT BG CZ RO SK UA
13 records

LG 56.35

Active

Helianthus annuus L. · Sunflower

LIMAGRAIN VERNEUIL HOLDING S.A.

BG IT RO SK UA
13 records

PR 64 A 89

Active

Helianthus annuus L. · Sunflower

Pioneer Overseas Corporation US (USA)

BG CZ HR IT RO UA
15 records

MAS 84 E

Active

Helianthus annuus L. · Sunflower

MAS Seeds,FR

AT BG CZ HR IT
13 records

LG 55.80

Active

Helianthus annuus L. · Sunflower

Limagrain Verneuil Holding (FR)

BG IT SK UA
13 records

LG 5550

Active

Helianthus annuus L. · Sunflower

Limagrain-Advanta Nederland B.V.

BG ES RO UA
11 records

MAS 92 CP

Active

Helianthus annuus L. · Sunflower

Maisadour Semences, F

ES RO SK UA
10 records

LG50545 CLP

Active

Helianthus annuus L. · Sunflower

LIMAGRAIN EUROPE S.A.

HU IT SK UA
11 records

LG 5555 CLP

Active

Helianthus annuus L. · Sunflower

Remy ROUANET

BG IT RO UA
12 records

N 5LM307

Active

Helianthus annuus L. · Sunflower

NUSEED EUROPE

IT RO SK UA
11 records

LG5451 HO CL

Active

Helianthus annuus L. · Sunflower

LIMAGRAIN VERNEUIL HOLDING S.A.

AT HU IT SK UA
11 records

LG 5452 HO CL

Active

Helianthus annuus L. · Sunflower

Remy ROUANET

SK UA
11 records

PR 64 H45

Application submitted

Helianthus annuus L. · Sunflower

Pioneer Hi-Bred International, INC., US

BG HR IT SK UA
9 records

PR 64 A 15

Active

Helianthus annuus L. · Sunflower

PIONEER OVERSEAS CORPORATION

HR IT UA
10 records

LG 5661CL

Active

Helianthus annuus L. · Sunflower

Remy ROUANET

BG IT SK UA
8 records

LG 5626 HO

Active

Helianthus annuus L. · Sunflower

LIMAGRAIN EUROPE S.A.

FR IT
8 records

MAS 95 OL

Active

Helianthus annuus L. · Sunflower

Zhoel` Meun`er

HR RO UA
6 records

LG50455 CLP

Active

Helianthus annuus L. · Sunflower

Remy ROUANET

BG IT UA
9 records

MAS 93 CP

Active

Helianthus annuus L. · Sunflower

MAS SEEDS

IT UA
6 records

N4h302 E

Active

Helianthus annuus L. · Sunflower

NUSEED EUROPE

IT RO UA
8 records

LG 5654 CL

Protection expired

Helianthus annuus L. · Sunflower

LIMAGRAIN VERNEUIL HOLDING S.A.

IT SK UA
5 records