International Survey of Herbicide-Resistant Weeds

Countries Weeds Herbicides Mutations Graphs References Researchers
HRAC GROUP 5 (LEGACY C1 C2) RESISTANT GIANT GREEN FOXTAIL
(Setaria viridis var. major (=var. robusta-alba, var. robustapurpurea))


PSII inhibitors - Serine 264 Binders HRAC Group 5 (Legacy C1 C2)

France
INTRODUCTION GIANT GREEN FOXTAIL
Giant Green Foxtail (Setaria viridis var. major (=var. robusta-alba, var. robustapurpurea)) is a monocot weed in the Poaceae family.  In France this weed first evolved resistance to Group 5 (Legacy C1 C2) herbicides in 1982 and infests Corn (maize).   Group 5 (Legacy C1 C2) herbicides are known as PSII inhibitors - Serine 264 Binders (Inhbition of Photosynthesis at PSll - Serine 264 Binders ).  Research has shown that these particular biotypes are resistant to atrazine and they may be cross-resistant to other Group 5 (Legacy C1 C2) 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 Sep 15, 2000 )

Common NameGiant Green Foxtail
SpeciesSetaria viridis var. major (=var. robusta-alba, var. robustapurpurea)
GroupPSII inhibitors - Serine 264 Binders HRAC Group 5 (Legacy C1 C2)
Herbicidesatrazine
LocationFrance
Year1982
Situation(s)Corn (maize)
Contributors - (Alphabetically)Jacques Gasquez 
Edit this Case  |  Add New Case of Resistance  |  Add Note

NOTES ABOUT THIS BIOTYPE

GENERAL

Jacques Gasquez
Homer LeBaron. 1991. Distribution and Seriousness of Herbicide-Resistant Weed Infestations Worldwide. In: Herbicide Resistance in Weeds and Crops.

Edit this Note  |  Add New Note
 

ACADEMIC ASPECTS

Confirmation Tests

Greenhouse trials comparing a known susceptible Giant Green Foxtail biotype with this Giant Green Foxtail 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 5 resistant Giant Green Foxtail 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 5 (Legacy C1 C2) resistant Giant Green Foxtail from France please update the database.
 
Edit Case  |  Add Note  |  Add Article  |  Add New Case  |  Help

CONTRIBUTING WEED SCIENTISTS

JACQUES GASQUEZ
Inra
Laboratoire De Malherbologie
702 Hickory Ct
Dijon, 21034, Cedex
France
Email Jacques Gasquez

ACKNOWLEDGEMENTS

The Herbicide Resistance Action Committee, The Weed Science Society of America, and weed scientists in France have been instrumental in providing you this information. Particular thanks is given to Jacques Gasquez for providing detailed information.
Herbicide Resistant Giant Green Foxtail Globally
(Setaria viridis var. major (=var. robusta-alba, var. robustapurpurea))
Herbicide Resistant Giant Green Foxtail Globally
(Setaria viridis var. major (=var. robusta-alba, var. robustapurpurea))
Drag a column header and drop it here to group by that column
Herbicide Resistant Giant Green Foxtail Globally
(Setaria viridis var. major (=var. robusta-alba, var. robustapurpurea))
#CountryFirstYearSituationActive IngredientsSite of Action
1 FranceFrance 1982 Corn (maize) atrazine 17 PSII inhibitors - Serine 264 Binders (C1 C2/5)
155Setaria viridis var. major (=var. robusta-alba, var. robustapurpurea)Giant Green Foxtail471
2 United States (Minnesota) United StatesMinnesota1996 Corn (maize), and Soybean imazethapyr, nicosulfuron, and primisulfuron-methyl 45 Inhibition of Acetolactate Synthase (B/2)
155Setaria viridis var. major (=var. robusta-alba, var. robustapurpurea)Giant Green Foxtail504
3 United States (Minnesota) United StatesMinnesota1999 Soybean fenoxaprop-ethyl, and fluazifop-butyl 45 Inhibition of Acetyl CoA Carboxylase (A/1)
155Setaria viridis var. major (=var. robusta-alba, var. robustapurpurea)Giant Green Foxtail5167
4 United States (Minnesota) United StatesMinnesota1999 Soybean fenoxaprop-ethyl, fluazifop-butyl, and sethoxydim 45 Inhibition of Acetyl CoA Carboxylase (A/1)
155Setaria viridis var. major (=var. robusta-alba, var. robustapurpurea)Giant Green Foxtail5168
Literature about Similar Cases

Page size:
select
Page: of 14
Items 1 to 5 of 70

Page size:
select
Page: of 14
Items 1 to 5 of 70
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.  Wednesday, December 8, 2021 .  Available  www.weedscience.org
Copyright © 1993- 2021 WeedScience.org All rights reserved. Fair use of this material is encouraged. Proper citation is requested.