International Survey of Herbicide-Resistant Weeds

Countries Weeds Herbicides Mutations Graphs References Researchers
HRAC GROUP 0 (LEGACY Z) RESISTANT GIANT PARRAMATTA GRASS
(Sporobolus fertilis)

UnknownHRAC Group 0 (Legacy Z)

Australia, New South Wales
INTRODUCTION GIANT PARRAMATTA GRASS
Giant Parramatta grass (Sporobolus fertilis) is a monocot weed in the Poaceae family.  In New South Wales this weed first evolved resistance to Group 0 (Legacy Z) herbicides in 2004 and infests Pastures.   Group 0 (Legacy Z) herbicides are known as Unknown (Unknown).  Research has shown that these particular biotypes are resistant to dalapon, and flupropanate and they may be cross-resistant to other Group 0 (Legacy Z) 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.

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QUIK STATS (last updated Feb 03, 2015 )

Common NameGiant Parramatta grass
SpeciesSporobolus fertilis
GroupUnknown HRAC Group 0 (Legacy Z)
Herbicidesdalapon, and flupropanate
LocationAustralia, New South Wales
Year2004
Situation(s)Pastures
Contributors - (Alphabetically)David Officer 
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NOTES ABOUT THIS BIOTYPE

GENERAL

David Officer

Ramasamy, S., Pritchard, G., Officer, D., Preston, C., Lawrie, A. C., McLaren, D.A. and Bonilla, J. (2007). Flupropanate Resistance in Giant Parramatta Grass (Sporobolus fertilis). Proc. of Resistance 2007 [Abstract Book]. 16th-18th April Rothamsted Research, Hertfordshire, UK pp.53.  

 

Ramasamy, S., McLaren D.A., Pritchard, G., Officer, D., Bonilla, J., Preston, C. and Lawrie, A.C. (2008). 2, 2 DPA resistance in Giant Parramatta Grass (Sporobolus fertilis). Proceedings of the 16th Australian Weeds Conference, eds R.D.  van Klinken, R.D., V.A. Osten, F.D. Panetta and J.C.   Scanlan. (Queensland Weeds Society, Brisbane) pp. 71-73.

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ACADEMIC ASPECTS

Confirmation Tests

Greenhouse trials comparing a known susceptible Giant Parramatta grass biotype with this Giant Parramatta grass 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 0 resistant Giant Parramatta grass 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 0 (Legacy Z) resistant Giant Parramatta grass from New South Wales please update the database.
 
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CONTRIBUTING WEED SCIENTISTS

DAVID OFFICER
Weed Scientist
NSW Department of Primary Industries,
PMB 2
Grafton , 2480, New South Wales
Australia
Email David Officer

ACKNOWLEDGEMENTS

The Herbicide Resistance Action Committee, The Weed Science Society of America, and weed scientists in New South Wales have been instrumental in providing you this information. Particular thanks is given to David Officer for providing detailed information.
Herbicide Resistant Giant Parramatta grass Globally
(Sporobolus fertilis)
Herbicide Resistant Giant Parramatta grass Globally
(Sporobolus fertilis)
Drag a column header and drop it here to group by that column
Herbicide Resistant Giant Parramatta grass Globally
(Sporobolus fertilis)
#CountryFirstYearSituationActive IngredientsSite of Action
1 Australia (New South Wales ) AustraliaNew South Wales 2004 Pastures dalapon, and flupropanate 1 Unknown ( HRAC Group 0 (Legacy Z)
 		325Sporobolus fertilisGiant Parramatta grass10965
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