INTERNATIONAL HERBICIDE-RESISTANT WEED DATABASE

HRAC GROUP 14 (LEGACY E) RESISTANT HAIRY BEGGARTICKS
(Bidens pilosa)


Inhibition of Protoporphyrinogen Oxidase HRAC Group 14 (Legacy E)

Brazil, Paraná
INTRODUCTION HAIRY BEGGARTICKS
Hairy Beggarticks (Bidens pilosa) is a dicot weed in the Asteraceae family.  In Brazil this weed first evolved resistance to Group 14 (Legacy E) herbicides in 2022 and infests Soybean.   Group 14 (Legacy E) herbicides are known as Inhibition of Protoporphyrinogen Oxidase (Inhibition of Protoporphyrinogen Oxidase ).  Research has shown that these particular biotypes are resistant to fomesafen and they may be cross-resistant to other Group 14 (Legacy E) 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.

If we do not have a picture for this weed, or you can provide a better picture (scan, digital camera etc) please please e-mail it to us.

QUIK STATS (last updated May 24, 2024 )

Common NameHairy Beggarticks
SpeciesBidens pilosa
GroupInhibition of Protoporphyrinogen Oxidase HRAC Group 14 (Legacy E)
Herbicidesfomesafen
LocationBrazil, Paraná
Year2022
Situation(s)Soybean
Contributors - (Alphabetically)Denis Fernando Biffe, Rubem Oliveira, and Vanessa Vital 
Edit this Case  |  Add New Case of Resistance  |  Add Note

ACADEMIC ASPECTS

Confirmation Tests

Greenhouse trials comparing a known susceptible Hairy Beggarticks biotype with this Hairy Beggarticks 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 14 resistant Hairy Beggarticks 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 14 (Legacy E) resistant Hairy Beggarticks from Brazil please update the database.
 
Edit Case  |  Add Note  |  Add Article  |  Add New Case  |  

CONTRIBUTING WEED SCIENTISTS

DENIS FERNANDO BIFFE
Student Phd.
Universidade Estadual De Maringá
Agronomia
1540 International Court I-11
Maringá, Paraná
Brazil
Email Denis Fernando Biffe
Web   : Web Site Link
RUBEM OLIVEIRA
Associate Professor
Universidade Estadual De Maringá - Departamento De Agronomia
Núcleo De Estudos Avançados Em Ciência Das Plantas Daninhas
Av. Colombo 5790
Maringá, 87020-900, Paraná
Brazil
Email Rubem Oliveira
Web   : Web Site Link
VANESSA VITAL
Researcher
Bayer
Núcleo De Estudos Avançados Em Ciência Das Plantas Daninhas
Rodovia Dionísio Bortolotto
KM 5
Santa Cruz das Palmeiras , 13650-000, São Paulo
Brazil
Email Vanessa Vital
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 Denis Fernando Biffe, Rubem Oliveira, and Vanessa Vital for providing detailed information.
Herbicide Resistant Hairy Beggarticks Globally
(Bidens pilosa)
Herbicide Resistant Hairy Beggarticks Globally
(Bidens pilosa)
Drag a column header and drop it here to group by that column
Herbicide Resistant Hairy Beggarticks Globally
(Bidens pilosa)
#CountryFirstYearSituationActive IngredientsSite of Action
1 BrazilBrazil 1993 Soybean chlorimuron-ethyl, imazaquin, imazethapyr, nicosulfuron, and pyrithiobac-sodium 5 Inhibition of Acetolactate Synthase ( HRAC Group 2 (Legacy B)
32Bidens pilosaHairy Beggarticks42
2 BrazilBrazil 2016 Corn (maize), and Soybean atrazine, and imazethapyr 5 Multiple Resistance: 2 Sites of Action
Inhibition of Acetolactate Synthase ( HRAC Group 2 (Legacy B)
PSII inhibitors - Serine 264 Binders ( HRAC Group 5 (Legacy C1 C2)
32Bidens pilosaHairy Beggarticks14053
3 BrazilBrazil 2022 Soybean fomesafen 5 Inhibition of Protoporphyrinogen Oxidase ( HRAC Group 14 (Legacy E)
32Bidens pilosaHairy Beggarticks27288
4 KenyaKenya 1991 Coffee paraquat 26 PS I Electron Diversion ( HRAC Group 22 (Legacy D)
32Bidens pilosaHairy Beggarticks381
5 MexicoMexico 2014 Lime, and sour glyphosate 29 Inhibition of Enolpyruvyl Shikimate Phosphate Synthase ( HRAC Group 9 (Legacy G)
32Bidens pilosaHairy Beggarticks9923
Literature about Similar Cases

Page size:
select
Page: of 6
Items 1 to 5 of 28

Page size:
select
Page: of 6
Items 1 to 5 of 28

PERMISSION MUST BE OBTAINED FIRST if you intend to base a significant portion of a scientific paper on data derived from this site. Citation:
Heap, I.  The International Herbicide-Resistant Weed Database.  Online.  Thursday, June 13, 2024 .  Available  www.weedscience.org Copyright © 1993- 2024 WeedScience.org All rights reserved. Fair use of this material is encouraged. Proper citation is requested.