International Survey of Herbicide-Resistant Weeds

Countries Weeds Herbicides Mutations Graphs References Researchers
GROUP C3/6 RESISTANT COMMON GROUNDSEL
(Senecio vulgaris)


PSII inhibitors (Nitriles) (C3/6)

United States, Oregon
INTRODUCTION COMMON GROUNDSEL
Common Groundsel (Senecio vulgaris) is a dicot weed in the Asteraceae family.  In Oregon this weed first evolved resistance to Group C3/6 herbicides in 1995 and infests Mint.   Group C3/6 herbicides are known as PSII inhibitors (Nitriles) (Inhibition of photosynthesis at photosystem II).  Research has shown that these particular biotypes are resistant to bromoxynil and they may be cross-resistant to other Group C3/6 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 NameCommon Groundsel
SpeciesSenecio vulgaris
GroupPSII inhibitors (Nitriles) (C3/6)
Herbicidesbromoxynil
LocationUnited States, Oregon
Year1995
Situation(s)Mint
Contributors - (Alphabetically)Ian Heap 
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ACADEMIC ASPECTS

Confirmation Tests

Greenhouse trials comparing a known susceptible Common Groundsel biotype with this Common Groundsel 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 Group C3/6 resistant Common Groundsel 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 C3/6 resistant Common Groundsel from Oregon please update the database.
 
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CONTRIBUTING WEED SCIENTISTS

IAN HEAP
Director
International Survey of Herbicide-Resistant Weeds
P.O. Box 1365
Corvallis, 97339, Oregon
United States
Email Ian Heap
Web   : Web Site Link

ACKNOWLEDGEMENTS

The Herbicide Resistance Action Committee, The Weed Science Society of America, and weed scientists in Oregon have been instrumental in providing you this information. Particular thanks is given to Ian Heap for providing detailed information.
Herbicide Resistant Common Groundsel Globally
(Senecio vulgaris)
Herbicide Resistant Common Groundsel Globally
(Senecio vulgaris)
Drag a column header and drop it here to group by that column
Herbicide Resistant Common Groundsel Globally
(Senecio vulgaris)
#CountryFirstYearSituationActive IngredientsSite of Action
1 BelgiumBelgium 1982 Corn (maize), Fruit, Nurseries, Railways, and Roadsides simazine 3 Photosystem II inhibitors (C1/5)
148Senecio vulgarisCommon Groundsel32
2 Canada (Ontario) CanadaOntario1977 Corn (maize) atrazine 7 Photosystem II inhibitors (C1/5)
148Senecio vulgarisCommon Groundsel5066
3 Czech RepublicCzech Republic 1988 Orchards, and Railways atrazine, cyanazine, lenacil, prometryn, simazine, terbuthylazine, and terbutryn 12 Photosystem II inhibitors (C1/5)
148Senecio vulgarisCommon Groundsel84
4 FranceFrance 1982 Cropland simazine 17 Photosystem II inhibitors (C1/5)
148Senecio vulgarisCommon Groundsel468
5 FranceFrance 2009 Grapes, and Wheat flazasulfuron, florasulam, imazamox, iodosulfuron-methyl-sodium, mesosulfuron-methyl, metsulfuron-methyl, prosulfuron, thiencarbazone-methyl, and tribenuron-methyl 17 ALS inhibitors (B/2)
148Senecio vulgarisCommon Groundsel11001
6 GermanyGermany 1980 Orchards atrazine 18 Photosystem II inhibitors (C1/5)
148Senecio vulgarisCommon Groundsel448
7 NetherlandsNetherlands 1982 Orchards simazine 43 Photosystem II inhibitors (C1/5)
148Senecio vulgarisCommon Groundsel220
8 NorwayNorway 1996 Nurseries simazine 31 Photosystem II inhibitors (C1/5)
148Senecio vulgarisCommon Groundsel387
9 SwitzerlandSwitzerland 1982 Grapes simazine 41 Photosystem II inhibitors (C1/5)
148Senecio vulgarisCommon Groundsel205
10 SwitzerlandSwitzerland 1987 Vegetables linuron 41 PSII inhibitor (Ureas and amides) (C2/7)
148Senecio vulgarisCommon Groundsel206
11 United KingdomUnited Kingdom 1977 Orchards metribuzin, and simazine 44 Photosystem II inhibitors (C1/5)
148Senecio vulgarisCommon Groundsel365
12 United States (Washington) United StatesWashington1970 Nurseries simazine 45 Photosystem II inhibitors (C1/5)
148Senecio vulgarisCommon Groundsel386
13 United States (California) United StatesCalifornia1981 Asparagus atrazine 45 Photosystem II inhibitors (C1/5)
148Senecio vulgarisCommon Groundsel1037
14 United States (Michigan) United StatesMichigan1990 Blueberries, and Corn (maize) atrazine 45 Photosystem II inhibitors (C1/5)
148Senecio vulgarisCommon Groundsel5180
15 United States (New York) United StatesNew York1991 Corn (maize) atrazine, and simazine 45 Photosystem II inhibitors (C1/5)
148Senecio vulgarisCommon Groundsel1056
16 United States (Oregon) United StatesOregon1995 Mint bromoxynil 45 PSII inhibitors (Nitriles) (C3/6)
148Senecio vulgarisCommon Groundsel322
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Cite this site as: Heap, I.  The International Survey of Herbicide Resistant Weeds.  Online.  Internet.  Monday, October 14, 2019 .  Available  www.weedscience.org
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