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.
Beta vulgaris Sugar Beet Group · Sugar beet
Hendrik Tschoep
Zea mays L. · Maize
R.A.G.T. 2n SAS
Helianthus annuus L. · Sunflower
Syngenta Crop Protection AG, CH
Beta vulgaris Sugar Beet Group · Sugar beet
KWS SAAT SE & CO.KGAA
Helianthus annuus L. · Sunflower
Syngenta Crop Protection AG
Brassica napus var. napus · Rapeseed
Norddeutsche Pflanzenzucht Hans-Georg Lembke KG
Beta vulgaris Sugar Beet Group · Sugar beet
Dietrich Hauer, Ann-Katrin Muennekhoff
Brassica napus var. napus · Rapeseed
R.L.THOMAS AND ASSOCIATED (GB)
Beta vulgaris Sugar Beet Group · Sugar beet
Werner Beyer Monica Weber Maik Gertz Dietrich Hauer
Beta vulgaris Sugar Beet Group · Sugar beet
Ann-Katrin Muennekhoff, Dietrich Hauer
Beta vulgaris Sugar Beet Group · Sugar beet
KWS SAAT SE & CO.KGAA
Beta vulgaris Sugar Beet Group · Sugar beet
Hilleshog AB (SE)
Zea mays L. · Maize
Bruno Lefevre
Triticum aestivum L. · Bread wheat
RAGT 2n
Zea mays L. · Maize
R2n (FR)
Triticum aestivum L. · Bread wheat
RAGT 2n
Helianthus annuus L. · Sunflower
RAGT 2N S.A.S
Brassica napus L. · Rapeseed
Rob Wilson
Brassica napus var. napus · Rapeseed
Zea mays L. · Maize
R2n SAS
Helianthus annuus L. · Sunflower
Maisadour Semences
Beta vulgaris Sugar Beet Group · Sugar beet
Werner Beyer, Dietrich Hauer, Madlaina Peter,
Helianthus annuus L. · Sunflower
Guillaume Bellier
Beta vulgaris Sugar Beet Group · Sugar beet
KWS| KWS SAAT AG