Variety traits
Herbicide tolerance is the genetically determined ability of a crop variety to withstand the phytotoxic effects of chemical agents, allowing for the application of herbicides to growing crops without suppressing the crop.
Mentioned in descriptions 5 668 varieties reference book.
The herbicide tolerance of a variety is the genetically determined ability of a cultivated plant to withstand the phytotoxic effects of a specific chemical agent. In practice, this allows for the application of broad-spectrum herbicides directly to the growing crop without the risk of damage or loss of the stand, which significantly simplifies weed control.
This trait is evaluated within the framework of state variety testing using field and laboratory test methods. In field conditions, plots subjected to chemical treatment are compared with control samples, where plant density preservation, the absence of phytotoxicity signs (chlorosis, necrosis), and growth rates are recorded. Laboratory methods include dose-response analysis to determine survival rates at various application rates of the chemical.
Tolerance indicators are expressed in visual damage scores, percentage of stand density preservation, or productivity levels relative to an untreated standard. High tolerance is characterized by the preservation of full productivity when the recommended full dose of herbicide is applied. With low tolerance, even reduced doses cause growth retardation and yield loss; therefore, an important parameter for variety selection is its compatibility with the specific mode of action of the applied chemical.
Selection based on the description text, not official resistance ratings: such data is not available in registers. Mention indicates that the trait is discussed in the variety's sources; see the variety's profile for details on what is specifically stated.
Helianthus annuus L. · Sunflower
Euralis Semences, Mondonville FR
Helianthus annuus L. · Sunflower
Tankszon Shandor, Medovarski Zoltan, Selumne Frank Zilvia, Au Zoltan, Duruhzne Oksko Edit, Nahin Katni Rozalia,
Helianthus annuus L. · Sunflower
Limagrain Europe SA (FR)
Zea mays L. · Maize
Syngenta Seeds
Helianthus annuus L. · Sunflower
Steve Thompson
Helianthus annuus L. · Sunflower
Steve Thompson
Helianthus annuus L. · Sunflower
Prograin Genetique (FR)
Helianthus annuus L. · Sunflower
Steve Thompson
Helianthus annuus L. · Sunflower
LABOULET SEMENCES
Helianthus annuus L. · Sunflower
Semences Cargill SA (FR)
Helianthus annuus L. · Sunflower
Ragt 2n, F
Secale cereale L. · Rye
PHP PETERSEN
Helianthus annuus L. · Sunflower
Pablo Bergada
Helianthus annuus L. · Sunflower
Syngenta Participations,CH
Helianthus annuus L. · Sunflower
Mohan Bentur
Helianthus annuus L. · Sunflower
Amelia Bertero
Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon
Syngenta Seeds
Helianthus annuus L. · Sunflower
SC Quality Crops Genetics SRL
Helianthus annuus L. · Sunflower
Amelia Bertero
Helianthus annuus L. · Sunflower
PIONEER OVERSEAS CORPORATION
Triticum aestivum L. · Bread wheat
Secobra Recherches, F
Helianthus annuus L. · Sunflower
Institut za ratarstvo i povrtarstvo, Novi Sad (RS)
Helianthus annuus L. · Sunflower
Pioneer Overseas Cor, USA
Triticum aestivum L. · Bread wheat
Roothaan, M.E.