Variety traits
Helianthus annuus L.
Sunflower lodging is the loss of plant stability, leading to yield reduction and difficulties in mechanical harvesting. A distinction is made between root lodging, due to weakened root anchorage in the soil, and stem lodging, resulting from stem breakage or bending.
In the reference 1 035 varieties crop Sunflower, where this is mentioned in the description.
In the state variety testing system, sunflower lodging resistance is evaluated on a 5-point scale. The assessment is conducted visually up to harvest, taking into account the plants' ability to straighten. A score of 5 is assigned to non-lodging varieties, while 1 point corresponds to severe lodging that makes mechanical harvesting impossible.
In addition to the point score, specialists record the type of damage, the plant development stage, and the conditions that triggered the phenomenon, such as stand density, weather conditions, or disease infection. The risk of sunflower lodging increases significantly with pathologies that weaken stem and root tissues, for example, Phoma infection.
Key agrotechnical factors for preventing lodging are the optimization of sowing density and balanced nitrogen nutrition, which prevents the formation of excessively thin stems. Morphological features of the plants, including the high windage of the flower head, also play a significant role in resistance to wind loads.
General information about the subject — on the page Lodging.
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
Roberto Reid V'iacheslav Baranenko
Helianthus annuus L. · Sunflower
Syngenta Crop Protection AG
Helianthus annuus L. · Sunflower
Rene Baratin
Helianthus annuus L. · Sunflower
Euralis Semences, Mondonville FR
Helianthus annuus L. · Sunflower
Pioneer Overseas Corporation US (USA)
Helianthus annuus L. · Sunflower
SYNGENTA SEEDS AG, CH
Helianthus annuus L. · Sunflower
Tierry Andre
Helianthus annuus L. · Sunflower
SYNGENTA FRANCE S.A.S.
Helianthus annuus L. · Sunflower
RAGT 2N S.A.S
Helianthus annuus L. · Sunflower
Syngenta Participations,CH
Helianthus annuus L. · Sunflower
SYNGENTA SEEDS AG, CH
Helianthus annuus L. · Sunflower
Euralis Semences, Mondonville FR
Helianthus annuus L. · Sunflower
Euralis Semences, Mondoville (FR)
Helianthus annuus L. · Sunflower
Syngenta Seeds LTD (UK)
Helianthus annuus L. · Sunflower
Syngenta Crop Protection,CH
Helianthus annuus L. · Sunflower
Ragt 2n, F
Helianthus annuus L. · Sunflower
NOVARTIS SEEDS
Helianthus annuus L. · Sunflower
SYNGENTA SEEDS AG, CH
Helianthus annuus L. · Sunflower
SYNGENTA SEEDS AG, CH
Helianthus annuus L. · Sunflower
Caussade Semences, F
Helianthus annuus L. · Sunflower
LIDEA FRANCE SAS
Helianthus annuus L. · Sunflower
Thierry Andre
Helianthus annuus L. · Sunflower
Syngenta Crop Protection AG, CH
Helianthus annuus L. · Sunflower
Syngenta Crop Protection AG Seeds Divison