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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

Sunflower herbicide resistance 726 Herbicide resistance — sugar beet 192 Maize herbicide resistance 148 Herbicide resistance in rapeseed 113 Herbicide Resistance in Rapeseed 97 Herbicide Resistance in Rice 93 Herbicide tolerance in potato 89 Herbicide resistance in soft wheat 88 Maize herbicide resistance 50 Herbicide resistance in soybean 50 Herbicide Tolerance — Sweet Corn 17 Herbicide tolerance in barley 15 Cotton Herbicide Resistance 15 Herbicide tolerance in pea 12 Herbicide Resistance in Perennial Ryegrass 12 Herbicide Tolerance in Common Bean 11 Herbicide resistance of chicory 9 Herbicide resistance — durum wheat 8 Herbicide resistance in red fescue 8 Herbicide resistance — Sheep's fescue 7 Herbicide Resistance in Sorghum 7 Herbicide resistance in tomato 5 Herbicide resistance in hard fescue 5 Chickpea herbicide tolerance 5

Found in these crops

Sunflower 725 Sugar beet 195 Maize 147 Rapeseed 111 Rapeseed 96 Rice 91 Potato 89 Bread wheat 89 Maize 49 Soybean 47 Sweet corn 17 Upland cotton 15

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.

3RI24/24

Withdrawn

Oryza sativa L. · Rice

S.I.S. SOCIETA' ITALIANA SEMENTI

IT
1 record

8Kh449KLDM

Terminated

Helianthus annuus L. · Sunflower

Steve Thompson

UA
2 records

8H358CL

Active

Helianthus annuus L. · Sunflower

DOW AgroSciences

IT
1 record

6K675

Active

Beta vulgaris Sugar Beet Group · Sugar beet

KWS SAAT SE & CO.KGAA

IT
1 record

4Ri21/39

Application submitted

Oryza sativa L. · Rice

S.I.S. SOCIETA' ITALIANA SEMENTI

IT
1 record

4114

Application submitted

Zea mays L. · Maize

Laurent Langrans

UA
2 records

9K968

Withdrawn

Beta vulgaris Sugar Beet Group · Sugar beet

KWS SAAT SE & CO.KGAA

IT
1 record

6K671

Withdrawn

Beta vulgaris Sugar Beet Group · Sugar beet

KWS SAAT SE & CO.KGAA

ES
1 record

4EN0003

Withdrawn

Brassica napus L. · Rapeseed

Jutta Kaiser

UA
3 records

05H210

Terminated

Gossypium hirsutum L. · Upland cotton

DELTA&PINE LAND HOLDING

ES
1 record

3RI24/15

Application submitted

Oryza sativa L. · Rice

S.I.S. SOCIETA' ITALIANA SEMENTI

IT
1 record

9K966

Withdrawn

Beta vulgaris Sugar Beet Group · Sugar beet

KWS SAAT SE & CO.KGAA

ES
1 record

1054L SU

Active

Helianthus annuus L. · Sunflower

Euralis Semences

IT
1 record

3RI24/87

Application submitted

Oryza sativa L. · Rice

S.I.S. SOCIETA' ITALIANA SEMENTI

IT
1 record

1K127

Withdrawn

Beta vulgaris Sugar Beet Group · Sugar beet

KWS SAAT SE & CO.KGAA

ES
1 record

Rapier

Terminated

Brassica napus var. napus · Rapeseed

KWS UK LTD

1 record

JACKLIN 501

Terminated

Lolium perenne L. · Perennial ryegrass

J.R. Simplot Company - a Nevada - USA Corporation

1 record

CL1992625B

Terminated

Brassica napus var. napus · Rapeseed

Agrigenetics Inc. D/B/A Mycogen Seeds

1 record

CL134904R

Terminated

Brassica napus var. napus · Rapeseed

Agrigenetics Inc. D/B/A Mycogen Seeds

1 record

CL215695R

Terminated

Brassica napus var. napus · Rapeseed

Agrigenetics Inc. D/B/A Mycogen Seeds

1 record

CL2231974R

Withdrawn

Brassica napus var. napus · Rapeseed

Agrigenetics Inc. D/B/A Mycogen Seeds

1 record

DLE18815S21

Active

Brassica napus L. · Rapeseed

Dieter Stelling, Martin Frauen

UA
2 records

Talmaz CL

Application submitted

Helianthus annuus L. · Sunflower

SEEDECO Semences SRL (MD)

BG
1 record

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