International Survey of Herbicide-Resistant Weeds

Countries Weeds Herbicides Mutations Graphs References Researchers
GROUP B/2 RESISTANT FIELD DODDER
(Cuscuta pentagona (=C. campestris))


ALS inhibitors (B/2)

Israel
INTRODUCTION FIELD DODDER
Field Dodder (Cuscuta pentagona (=C. campestris)) is a dicot weed in the Cuscutaceae family.  In Israel this weed first evolved resistance to Group B/2 herbicides in 1994 and infests Forests.   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 chlorsulfuron, and sulfometuron-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 Jun 06, 2000 )

Common NameField Dodder
SpeciesCuscuta pentagona (=C. campestris)
GroupALS inhibitors (B/2)
Herbicideschlorsulfuron, and sulfometuron-methyl
LocationIsrael
Year1994
Situation(s)Forests
Contributors - (Alphabetically)Baruch Rubin 
Edit this Case  |  Add New Case of Resistance  |  Add Note

NOTES ABOUT THIS BIOTYPE

AREAS FOUND

Baruch Rubin
Ganot Junction.

Edit this Note  |  Add New Note
 
GENERAL

Baruch Rubin
Parasitic weed found on resistant Amaranthus blitoides.

Rubin, B. 1995. Herbicide resistance outside north America and Europe : Causes and Significance. Proc. Int. Symp. on Weed & Crop Resistance to Herbicides. Cordoba, Spain. April 1995.

Edit this Note  |  Add New Note
 

ACADEMIC ASPECTS

Confirmation Tests

Field, Greenhouse, and Laboratory trials comparing a known susceptible Field Dodder biotype with this Field Dodder 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 B/2 resistant Field Dodder 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 Field Dodder from Israel please update the database.
 
Edit Case  |  Add Note  |  Add Article  |  Add New Case  |  Help

CONTRIBUTING WEED SCIENTISTS

BARUCH RUBIN
Professor
Hebrew University Of Jerusalem
Inst. Plant Sci. & Genetics In Agriculture
Faculty Of Agric.
Food & Environm.
Rehovot, 76100, Israel
Israel
Email Baruch Rubin

ACKNOWLEDGEMENTS

The Herbicide Resistance Action Committee, The Weed Science Society of America, and weed scientists in Israel have been instrumental in providing you this information. Particular thanks is given to Baruch Rubin for providing detailed information.
Herbicide Resistant Field Dodder Globally
(Cuscuta pentagona (=C. campestris))
Herbicide Resistant Field Dodder Globally
(Cuscuta pentagona (=C. campestris))
Drag a column header and drop it here to group by that column
Herbicide Resistant Field Dodder Globally
(Cuscuta pentagona (=C. campestris))
#CountryFirstYearSituationActive IngredientsSite of Action
1 IsraelIsrael 1994 Forests chlorsulfuron, and sulfometuron-methyl 23 ALS inhibitors (B/2)
69Cuscuta pentagona (=C. campestris)Field Dodder104
Literature about Similar Cases

1
Page size:
select
Page: of 1
Items 1 to 1 of 1

1
Page size:
select
Page: of 1
Items 1 to 1 of 1
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.  Friday, December 13, 2019 .  Available  www.weedscience.org
Copyright © 1993- 2019 WeedScience.org All rights reserved. Fair use of this material is encouraged. Proper citation is requested.