<b>HRAC Group 22</b> <font size='2'> (Legacy D) </font> resistant Gamochaeta pensylvanica from Australia, Queensland

INTERNATIONAL HERBICIDE-RESISTANT WEED DATABASE

HRAC GROUP 22 (LEGACY D) RESISTANT PENNSYLVANIA EVERLASTING
(Gamochaeta pensylvanica)

PS I Electron Diversion HRAC Group 22 (Legacy D)

Australia, Queensland

INTRODUCTION		PENNSYLVANIA EVERLASTING
Pennsylvania Everlasting (Gamochaeta pensylvanica) is a dicot weed in the Asteraceae family. In Queensland this weed first evolved resistance to Group 22 (Legacy D) herbicides in 2015 and infests Sugarcane for sugar, and Vegetables. Group 22 (Legacy D) herbicides are known as PS I Electron Diversion (PSI Electron Diversion ). Research has shown that these particular biotypes are resistant to paraquat and they may be cross-resistant to other Group 22 (Legacy D) 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.

QUIK STATS (last updated Feb 08, 2016 )
Common Name	Pennsylvania Everlasting
Species	Gamochaeta pensylvanica
Group	PS I Electron Diversion HRAC Group 22 (Legacy D)
Herbicides	paraquat
Location	Australia, Queensland
Year	2015
Situation(s)	Sugarcane for sugar, and Vegetables
Contributors - (Alphabetically)	Christopher Preston
Edit this Case \| Add New Case of Resistance \| Add Note

ACADEMIC ASPECTS

Confirmation Tests

Greenhouse, and Laboratory trials comparing a known susceptible Pennsylvania Everlasting biotype with this Pennsylvania Everlasting 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 22 resistant Pennsylvania Everlasting 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 22 (Legacy D) resistant Pennsylvania Everlasting from Queensland please update the database.

Edit Case | Add Note | Add Article | Add New Case |

CONTRIBUTING WEED SCIENTISTS

CHRISTOPHER PRESTON

University Of Adelaide - Waite Campus Crc For Australian Weed Management And School Of Agriculture Box 2146 Adelaide, 5064, South Australia Australia Email Christopher Preston

ACKNOWLEDGEMENTS
The Herbicide Resistance Action Committee, The Weed Science Society of America, and weed scientists in Queensland have been instrumental in providing you this information. Particular thanks is given to Christopher Preston for providing detailed information.

Drag a column header and drop it here to group by that column

Herbicide Resistant Pennsylvania Everlasting Globally
(Gamochaeta pensylvanica)

Country

FirstYear

Situation

Active Ingredients

Site of Action

Australia (Queensland)

2015

Sugarcane for sugar, and Vegetables

paraquat

PS I Electron Diversion ( HRAC Group 22 (Legacy D)

Japan

1991

Mulberry

paraquat

PS I Electron Diversion ( HRAC Group 22 (Legacy D)

Literature about Similar Cases

Page size:

select

Page: of 0

Items 0 to 0 of 0

Page size:

select

Page: of 0

Items 0 to 0 of 0

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. Saturday, November 23, 2024 . Available www.weedscience.org Copyright © 1993- 2024 WeedScience.org All rights reserved. Fair use of this material is encouraged. Proper citation is requested.