International Survey of Herbicide-Resistant Weeds

Countries Weeds Herbicides Mutations Graphs References Researchers
(Sinapis alba)

ALS inhibitors (B/2)

White Mustard (Sinapis alba) is a dicot weed in the Brassicaceae family.  In Spain this weed first evolved resistance to Group B/2 herbicides in 2007 and infests Winter wheat.   Group B/2 herbicides are known as ALS inhibitors (Inhibition of acetolactate synthase ALS (acetohydroxyacid synthase AHAS)).  Research has shown that these particular biotypes are resistant to iodosulfuron-methyl-sodium, and tribenuron-methyl and they may be cross-resistant to other Group B/2 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 Oct 21, 2008 )

Common NameWhite Mustard
SpeciesSinapis alba
GroupALS inhibitors (B/2)
Herbicidesiodosulfuron-methyl-sodium, and tribenuron-methyl
Situation(s)Winter wheat
Contributors - (Alphabetically)Hugo Cruz-Hipólito, and Rafael De Prado 
Edit this Case  |  Add New Case of Resistance  |  Add Note


Confirmation Tests

Greenhouse trials comparing a known susceptible White Mustard biotype with this White Mustard biotype have been used to confirm resistance. For further information on the tests conducted please contact the local weed scientists that provided this information.

Genetic studies on Group B/2 resistant White Mustard 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 B/2 resistant White Mustard from Spain please update the database.
Edit Case  |  Add Note  |  Add Article  |  Add New Case  |  Help


Research Asociate
Universidad De Córdoba
Química Agrícola Y Edafología
Campus Universitario De Rabanales Edif. C-3 3ª Planta
Córdoba, 14002
Email Hugo Cruz-Hipólito
Research Asociate
Universidad De Cordoba
Qvimica Agricola Y Edafologa
E T S Ingenieros Agronomos
PO Box 119
Cordoba, E-14080, Andalusia
Email Rafael De Prado


The Herbicide Resistance Action Committee, The Weed Science Society of America, and weed scientists in Spain have been instrumental in providing you this information. Particular thanks is given to Hugo Cruz-Hipólito, and Rafael De Prado for providing detailed information.
Herbicide Resistant White Mustard Globally
(Sinapis alba)
Herbicide Resistant White Mustard Globally
(Sinapis alba)
Drag a column header and drop it here to group by that column
Herbicide Resistant White Mustard Globally
(Sinapis alba)
#CountryFirstYearSituationActive IngredientsSite of Action
1 CyprusCyprus 2012 Cereals tribenuron-methyl 53 ALS inhibitors (B/2)
241Sinapis albaWhite Mustard6751
2 SpainSpain 2007 Winter wheat iodosulfuron-methyl-sodium, and tribenuron-methyl 38 ALS inhibitors (B/2)
241Sinapis albaWhite Mustard5368
Literature about Similar Cases

Page size:
Page: of 2
Items 1 to 5 of 7

Page size:
Page: of 2
Items 1 to 5 of 7
PERMISSION MUST BE OBTAINED FIRST if you intend to base a significant portion of a scientific paper on data derived from this site.
Cite this site as: Heap, I.  The International Survey of Herbicide Resistant Weeds.  Online.  Internet.  Tuesday, January 19, 2021 .  Available
Copyright © 1993- 2021 All rights reserved. Fair use of this material is encouraged. Proper citation is requested.