Shortpod Mustard (Hirschfeldia incana) is a dicot weed in the Brassicaceae family.  In Argentina this weed first evolved multiple resistance (to 2 herbicide sites of action) in 2016 and infests Wheat.  Multiple resistance has evolved to herbicides in the Groups B/2, and O/4.  These particular biotypes are known to have resistance to 2,4-D, and metsulfuron-methyl and they may be cross-resistant to other herbicides in the Groups B/2, and O/4.

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 Sep 14, 2017 )

Common NameShortpod Mustard
SpeciesHirschfeldia incana
GroupALS inhibitors (B/2)
Synthetic Auxins (O/4)
Herbicides2,4-D, and metsulfuron-methyl
LocationArgentina, Buenos Aires province
Contributors - (Alphabetically)Mario Raul Vigna 
Edit this Case  |  Add New Case of Resistance  |  Add Note


Confirmation Tests

Greenhouse trials comparing a known susceptible Shortpod Mustard biotype with this Shortpod 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, O/2, 4 resistant Shortpod 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 multiple resistant Shortpod Mustard from Argentina please update the database.
Edit Case  |  Add Note  |  Add Article  |  Add New Case  |  


Inta (instituto Nacional De Tecnología Agropecuaria)
Estación Experimental Agropecuaria Bordenave
Ruta Prov. 76 km 36.5
Bordenave, 8187, Buenos Aires
Email Mario Raul Vigna
Web   : Web Site Link


The Herbicide Resistance Action Committee, The Weed Science Society of America, and weed scientists in Argentina have been instrumental in providing you this information. Particular thanks is given to Mario Raul Vigna for providing detailed information.
Herbicide Resistant Shortpod Mustard Globally
(Hirschfeldia incana)
Herbicide Resistant Shortpod Mustard Globally
(Hirschfeldia incana)
Drag a column header and drop it here to group by that column
Herbicide Resistant Shortpod Mustard Globally
(Hirschfeldia incana)
#CountryFirstYearSituationActive IngredientsSite of Action
1 ArgentinaArgentina 2013 Wheat, and Winter barley metsulfuron-methyl 48 ALS inhibitors (B/2)
328Hirschfeldia incanaShortpod Mustard11008
2 ArgentinaArgentina 2016 Wheat 2,4-D, and metsulfuron-methyl 48 Multiple Resistance: 2 Sites of Action
ALS inhibitors (B/2)
Synthetic Auxins (O/4)
328Hirschfeldia incanaShortpod Mustard17103
Literature about Similar Cases

Page size:
Page: of 1
Items 1 to 4 of 4

Page size:
Page: of 1
Items 1 to 4 of 4

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.  Monday, September 21, 2020 .  Available Copyright © 1993- 2020 All rights reserved. Fair use of this material is encouraged. Proper citation is requested.