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
Euralis Semences FR
Helianthus annuus L. · Sunflower
Petran Alexandru-Viorel
Helianthus annuus L. · Sunflower
Philippe Moreau
Helianthus annuus L. · Sunflower
SEEDTEC INTERNATIONAL
Helianthus annuus L. · Sunflower
SEMILLAS BATLLE
Helianthus annuus L. · Sunflower
LABOULET SEMENCES
Helianthus annuus L. · Sunflower
Jose Carlos Ramos Aguilar
Helianthus annuus L. · Sunflower
Patrick Duhigg
Helianthus annuus L. · Sunflower
JOSE RAMON PEREZ MONREAL
Helianthus annuus L. · Sunflower
SEMILLAS BATLLE S.A.
Helianthus annuus L. · Sunflower
Joel Meunier
Helianthus annuus L. · Sunflower
RAGT 2N S.A.S
Helianthus annuus L. · Sunflower
RAGT 2N S.A.S
Helianthus annuus L. · Sunflower
RAGT 2N S.A.S
Helianthus annuus L. · Sunflower
EURALIS SEMILLAS, S.A.
Helianthus annuus L. · Sunflower
Eugenio Tassinari
Helianthus annuus L. · Sunflower
Rustica Prograin Genetique
Helianthus annuus L. · Sunflower
DOW AGROSCIENCES VERTRIEBS GMBH
Helianthus annuus L. · Sunflower
Steve Thompson
Helianthus annuus L. · Sunflower
Jean Pierre Dufourcg
Helianthus annuus L. · Sunflower
Jean Pierre Dufourcq
Helianthus annuus L. · Sunflower
Shein, Steve
Helianthus annuus L. · Sunflower
MAS Seeds,FR
Helianthus annuus L. · Sunflower
Patrick Duhigg