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.
Zea mays L. · Maize
Ludwig Feldmeier
Brassica napus L. · Rapeseed
RAGT 2n Center de Recherce, Rodez FR
Helianthus annuus L. · Sunflower
Maurizio Lottari
Beta vulgaris Sugar Beet Group · Sugar beet
Henning Friehe
Cichorium intybus L. (Industrial Chicory Group) · Chicory
S.A.S. Florimond Desprez Veuve & Fils
Glycine max (L.) Merr. · Soybean
Hendrick Seeds
Zea mays L. subsp. mays (Maize Group) · Maize
RAGT 2n
Helianthus annuus L. · Sunflower
Steve Thompson
Beta vulgaris Sugar Beet Group · Sugar beet
FLORIMONT DESPREZ VEUNE & FILS
Brassica rapa L. subsp. campestris (L.) A. R. Clapham · Field mustard
Rutger Persson
Helianthus annuus L. · Sunflower
S&W Seed Company Australia Pty Ltd
Helianthus annuus L. · Sunflower
Steve Thompson
Helianthus annuus L. · Sunflower
Steve Thompson
Beta vulgaris Sugar Beet Group · Sugar beet
KWS SAAT SE & CO.KGAA
Helianthus annuus L. · Sunflower
Euralis Semences FR
Helianthus annuus L. · Sunflower
Steve Thompson
Helianthus annuus L. · Sunflower
Steve Thompson
Helianthus annuus L. · Sunflower
PIONEER OVERSEAS CORPORATION
Helianthus annuus L. · Sunflower
NuSeed Americas
Helianthus annuus L. · Sunflower
LIMAGRAIN EUROPE S.A.
Helianthus annuus L. · Sunflower
LIMAGRAIN EUROPE S.A.
Oryza sativa L. · Rice
BILONI MASSIMO
Solanum tuberosum L. · Potato
Averis Seeds B.V.
Triticum aestivum L. · Bread wheat
APSOVSEMENTI S.P.A.