International Survey of Herbicide-Resistant Weeds

Countries Weeds Herbicides Mutations Graphs References Researchers
HRAC GROUP 5 (LEGACY C1 C2) RESISTANT FIGLEAVED GOOSEFOOT
(Chenopodium ficifolium)


PSII inhibitors - Serine 264 Binders HRAC Group 5 (Legacy C1 C2)

Switzerland, Valais
INTRODUCTION FIGLEAVED GOOSEFOOT
Figleaved Goosefoot (Chenopodium ficifolium) is a dicot weed in the Chenopodiaceae family.  In Switzerland this weed first evolved resistance to Group 5 (Legacy C1 C2) herbicides in 1986 and infests Vegetables.   Group 5 (Legacy C1 C2) herbicides are known as PSII inhibitors - Serine 264 Binders (Inhbition of Photosynthesis at PSll - Serine 264 Binders ).  Research has shown that these particular biotypes are resistant to simazine and they may be cross-resistant to other Group 5 (Legacy C1 C2) herbicides.

The 'Group' letters/numbers that you see throughout this web site refer to the classification of herbicides by their site of action. To see a full list of herbicides and HRAC herbicide classifications click here.

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QUIK STATS (last updated Sep 15, 2000 )

Common NameFigleaved Goosefoot
SpeciesChenopodium ficifolium
GroupPSII inhibitors - Serine 264 Binders HRAC Group 5 (Legacy C1 C2)
Herbicidessimazine
LocationSwitzerland, Valais
Year1986
Situation(s)Vegetables
Contributors - (Alphabetically)Jean Mayor 
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NOTES ABOUT THIS BIOTYPE

AREAS FOUND

Jean Mayor
State of Valais.

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ACADEMIC ASPECTS

Confirmation Tests

Greenhouse, and Laboratory trials comparing a known susceptible Figleaved Goosefoot biotype with this Figleaved Goosefoot biotype have been used to confirm resistance. For further information on the tests conducted please contact the local weed scientists that provided this information.
 
Genetics

Genetic studies on HRAC Group 5 resistant Figleaved Goosefoot have not been reported to the site.  There may be a note below or an article discussing the genetics of this biotype in the Fact Sheets and Other Literature
 
Mechanism of Resistance

The mechanism of resistance for this biotype is either unknown or has not been entered in the database.  If you know anything about the mechanism of resistance for this biotype then please update the database.
 
Relative Fitness

There is no record of differences in fitness or competitiveness of these resistant biotypes when compared to that of normal susceptible biotypes.  If you have any information pertaining to the fitness of Group 5 (Legacy C1 C2) resistant Figleaved Goosefoot from Switzerland please update the database.
 
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CONTRIBUTING WEED SCIENTISTS

JEAN MAYOR
St. Federal De Recherches, Agronomy De Changins
Service De Malherbologie
Weed Mgmt Program Lead - Horticulture
120 Main St, PO Box 400
Nyon, CH-1260
Switzerland

ACKNOWLEDGEMENTS

The Herbicide Resistance Action Committee, The Weed Science Society of America, and weed scientists in Switzerland have been instrumental in providing you this information. Particular thanks is given to Jean Mayor for providing detailed information.
Herbicide Resistant Figleaved Goosefoot Globally
(Chenopodium ficifolium)
Herbicide Resistant Figleaved Goosefoot Globally
(Chenopodium ficifolium)
Drag a column header and drop it here to group by that column
Herbicide Resistant Figleaved Goosefoot Globally
(Chenopodium ficifolium)
#CountryFirstYearSituationActive IngredientsSite of Action
1 GermanyGermany 1980 Corn (maize) atrazine 18 PSII inhibitors - Serine 264 Binders (C1 C2/5)
48Chenopodium ficifoliumFigleaved Goosefoot443
2 SwitzerlandSwitzerland 1986 Vegetables simazine 41 PSII inhibitors - Serine 264 Binders (C1 C2/5)
48Chenopodium ficifoliumFigleaved Goosefoot201
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Cite this site as: Heap, I.  The International Survey of Herbicide Resistant Weeds.  Online.  Internet.  Saturday, December 4, 2021 .  Available  www.weedscience.org
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