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Variety traits

Herbicide tolerance

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.

Sources10

Breakdown by crop

Found in these crops

Varieties that feature this in their description

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.

Ambrose

Active

Festuca rubra L. · Red fescue

PROSEEDS MARKETING

IT
3 records

Oryza sativa L. · Rice

Sardo Piemontese Sementi Soc. Coop. Società Agricola

IT
4 records

Abraxas

Terminated

Zea mays L. · Maize

Südwestdeutsche Saatzucht GmbH&Co.KG

DE
4 records

7Ppzg02r

Active

Helianthus annuus L. · Sunflower

PIONEER OVERSEAS CORPORATION

UA
3 records

7Pgcu58b

Active

Helianthus annuus L. · Sunflower

PIONEER OVERSEAS CORPORATION

UA
3 records

8H463CL

Active

Helianthus annuus L. · Sunflower

DOW AgroSciences

IT
5 records

845F

Active

Sorghum bicolor (L.) Moench · Sorghum

PIONEER HI-BRED INT

IT
4 records

Festuca ovina L. · Sheep's fescue

ABERYSTWYTH UNIVERSITY

NL
6 records

7Pzsj18r

Active

Helianthus annuus L. · Sunflower

PIONEER OVERSEAS CORPORATION

UA
4 records

7Pyhf53b

Active

Helianthus annuus L. · Sunflower

PIONEER OVERSEAS CORPORATION

UA
3 records

7Pqcf52r

Active

Helianthus annuus L. · Sunflower

PIONEER OVERSEAS CORPORATION

UA
3 records

Spitfire

Active

Brassica napus var. napus · Rapeseed

FORAGE INNOVATIONS LTD

4 records

Phtfe

Active

Zea mays L. · Maize

PIONEER HI-BRED INTERNATIONAL

3 records

PH1B5

Active

Zea mays L. · Maize

PIONEER HI-BRED INTERNATIONAL

3 records

IR180DMR

Active

Helianthus annuus L. · Sunflower

Nidera S.A.

3 records

IR179DMR

Active

Helianthus annuus L. · Sunflower

Nidera S.A.

3 records

Helianthus annuus L. · Sunflower

Nidera S.A.

3 records

Conti CL

Application submitted

Brassica napus L. · Rapeseed

Norddeutsche Pflanzenzucht Hans-Georg Lembke KG

EE LT LV
3 records

Brassica napus L. · Rapeseed

Norddeutsche Pflanzenzucht Hans-Georg Lembke KG

EE LT
3 records

Shimshek

Active

Oryza sativa L. · Rice

KADIR HAN TEKCAN

BG UA
4 records

Zea mays L. · Maize

Institut za ratarstvo i povrtarstvo, Novi Sad

SI
3 records

Ampara

Active

Triticum aestivum L. · Bread wheat

APSOVSEMENTI S.P.A.

IT
4 records

Alagir

Active

Triticum aestivum L. · Bread wheat

APSOVSEMENTI S.P.A.

IT
4 records

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