International Survey of Herbicide-Resistant Weeds

Countries Weeds Herbicides Mutations Graphs References Researchers
GROUP D/22 RESISTANT SUMATRAN FLEABANE
(Conyza sumatrensis)


PSI Electron Diverter (D/22)

Brazil, Paraná State
INTRODUCTION SUMATRAN FLEABANE
Sumatran Fleabane (Conyza sumatrensis) is a dicot weed in the Asteraceae family.  In Brazil this weed first evolved resistance to Group D/22 herbicides in 2016 and infests Soybean.   Group D/22 herbicides are known as PSI Electron Diverter (Photosystem-I-electron diversion).  Research has shown that these particular biotypes are resistant to paraquat and they may be cross-resistant to other Group D/22 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 Jun 28, 2017 )

Common NameSumatran Fleabane
SpeciesConyza sumatrensis
GroupPSI Electron Diverter (D/22)
Herbicidesparaquat
LocationBrazil, Paraná State
Year2016
Situation(s)Soybean
Contributors - (Alphabetically)Fernando Adegas, Alfredo Junior Paiola Albrecht, Leandro Paiola Albrecht, Vinicius Gabriel Caneppele Pereira, Rogerio Rubin, and Luiz Zobiole 
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ACADEMIC ASPECTS

Confirmation Tests

Greenhouse trials comparing a known susceptible Sumatran Fleabane biotype with this Sumatran Fleabane 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 D/22 resistant Sumatran Fleabane 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 D/22 resistant Sumatran Fleabane from Brazil please update the database.
 
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CONTRIBUTING WEED SCIENTISTS

FERNANDO ADEGAS
Weed Scientist
Embrapa Soja
Weed Management
Rod. Carlos Joao Strass
Ac. Orlando Amaral. PO Box 231
Londrina, 86001-970, Paraná
Brazil
Email Fernando Adegas
Web   : Web Site Link
ALFREDO JUNIOR PAIOLA ALBRECHT
Professor and Researcher
Federal University of Paraná - UFPR
Department of Agronomic Sciences
Rua Pioneiro
2153
Palotina, 85950-000, Paraná State
Brazil
Email Alfredo Junior Paiola Albrecht
Web   : Web Site Link
LEANDRO PAIOLA ALBRECHT
Professor and Researcher
Federal University of Paraná - UFPR
Department of Agronomic Sciences
Rua Pioneiro
2153
Palotina, 85950-000 , Paraná State
Brazil
Email Leandro Paiola Albrecht
Web   : Web Site Link
VINICIUS GABRIEL CANEPPELE PEREIRA
Master's Student
Universidade Estadual Paulista "Júlio de Mesquita Filho"
Campus of Botucatu
Lageado Farm. Rua José Barbosa de Barros
nº 1780
Botucatu, 18610070, São Paulo
Brazil
Email Vinicius Gabriel Caneppele Pereira
Web   : Web Site Link
ROGERIO RUBIN
Field Scientist
Dow AgroSciences
Crop Protection R&D
Av. das Nações Unidas
São Paulo, 04794-000, São Paulo
Brazil
Email Rogerio Rubin
Web   : Web Site Link
LUIZ ZOBIOLE
Field Scientist
Corteva Agriscience™ Agriculture Division of DowDuPont ™
Crop Protection R&D
Rod. SP 147 km 71

Mogi Migim, 13800-970 , São Paulo
Brazil
Email Luiz Zobiole
Web   : Web Site Link

ACKNOWLEDGEMENTS

The Herbicide Resistance Action Committee, The Weed Science Society of America, and weed scientists in Brazil have been instrumental in providing you this information. Particular thanks is given to Fernando Adegas, Alfredo Junior Paiola Albrecht, Leandro Paiola Albrecht, Vinicius Gabriel Caneppele Pereira, Rogerio Rubin, and Luiz Zobiole for providing detailed information.
Herbicide Resistant Sumatran Fleabane Globally
(Conyza sumatrensis)
Herbicide Resistant Sumatran Fleabane Globally
(Conyza sumatrensis)
Drag a column header and drop it here to group by that column
Herbicide Resistant Sumatran Fleabane Globally
(Conyza sumatrensis)
#CountryFirstYearSituationActive IngredientsSite of Action
1 Australia (Queensland) AustraliaQueensland2018 Fallow, and Wheat paraquat 1 PSI Electron Diverter (D/22)
65Conyza sumatrensisSumatran Fleabane17148
2 BrazilBrazil 2010 Corn (maize), and Soybean glyphosate 5 EPSP synthase inhibitors (G/9)
65Conyza sumatrensisSumatran Fleabane5577
3 BrazilBrazil 2011 Soybean chlorimuron-ethyl 5 ALS inhibitors (B/2)
65Conyza sumatrensisSumatran Fleabane5647
4 BrazilBrazil 2011 Corn (maize), and Soybean chlorimuron-ethyl, and glyphosate 5 Multiple Resistance: 2 Sites of Action
ALS inhibitors (B/2)
EPSP synthase inhibitors (G/9)
65Conyza sumatrensisSumatran Fleabane5648
5 BrazilBrazil 2016 Soybean paraquat 5 PSI Electron Diverter (D/22)
65Conyza sumatrensisSumatran Fleabane16082
6 BrazilBrazil 2017 Soybean saflufenacil 5 PPO inhibitors (E/14)
65Conyza sumatrensisSumatran Fleabane17099
7 BrazilBrazil 2017 Soybean chlorimuron-ethyl, glyphosate, and paraquat 5 Multiple Resistance: 3 Sites of Action
ALS inhibitors (B/2)
PSI Electron Diverter (D/22)
EPSP synthase inhibitors (G/9)
65Conyza sumatrensisSumatran Fleabane17102
8 BrazilBrazil 2017 Soybean 2,4-D, diuron, glyphosate, paraquat, and saflufenacil 5 Multiple Resistance: 5 Sites of Action
PSII inhibitor (Ureas and amides) (C2/7)
PSI Electron Diverter (D/22)
PPO inhibitors (E/14)
EPSP synthase inhibitors (G/9)
Synthetic Auxins (O/4)
65Conyza sumatrensisSumatran Fleabane17135
9 FranceFrance 2010 Grapes glyphosate 17 EPSP synthase inhibitors (G/9)
65Conyza sumatrensisSumatran Fleabane9932
10 FranceFrance 2016 Grapes flazasulfuron, iodosulfuron-methyl-sodium, mesosulfuron-methyl, and penoxsulam 17 ALS inhibitors (B/2)
65Conyza sumatrensisSumatran Fleabane17114
11 FranceFrance 2016 Grapes flazasulfuron, glyphosate, iodosulfuron-methyl-sodium, mesosulfuron-methyl, and penoxsulam 17 Multiple Resistance: 2 Sites of Action
ALS inhibitors (B/2)
EPSP synthase inhibitors (G/9)
65Conyza sumatrensisSumatran Fleabane17115
12 GreeceGreece 2012 Grapes, Olive, and Orchards glyphosate 19 EPSP synthase inhibitors (G/9)
65Conyza sumatrensisSumatran Fleabane5691
13 JapanJapan 1986 Mulberry, Orchards, and Roadsides diquat, and paraquat 25 PSI Electron Diverter (D/22)
65Conyza sumatrensisSumatran Fleabane126
14 MalaysiaMalaysia 1990 Vegetables paraquat 28 PSI Electron Diverter (D/22)
65Conyza sumatrensisSumatran Fleabane138
15 SpainSpain 2009 Orchards glyphosate 38 EPSP synthase inhibitors (G/9)
65Conyza sumatrensisSumatran Fleabane5481
16 Sri LankaSri Lanka 1998 Tea paraquat 39 PSI Electron Diverter (D/22)
65Conyza sumatrensisSumatran Fleabane1184
17 TaiwanTaiwan 1980 Cropland, Railways, and Roadsides paraquat 42 PSI Electron Diverter (D/22)
65Conyza sumatrensisSumatran Fleabane214
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Cite this site as: Heap, I.  The International Survey of Herbicide Resistant Weeds.  Online.  Internet.  Monday, November 19, 2018 .  Available  www.weedscience.org
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