Skip to main content Accessibility help
×
Home

A Survey in the Southern Grain Belt of Western Australia Did Not Find Conyza Spp. Resistant to Glyphosate

  • Mechelle J. Owen (a1), Roslyn K. Owen (a1) and Stephen B. Powles (a1)

Abstract

Glyphosate-resistant crops will be grown for the first time in Western Australia in 2009. A survey was conducted across 150,000 km2 of the southeastern part of the Western Australian grain belt in 2007 to determine whether glyphosate-resistant Conyza populations were present. Sixty-eight Conyza populations were collected from various fields and roadside locations. These populations were collected from areas where Conyza was known to exist. Populations were screened with glyphosate and all populations were found to be glyphosate-susceptible. While no glyphosate-resistant Conyza populations were found in the southeastern grain belt of Western Australia, it provides baseline data prior to the introduction of glyphosate-resistant crops in this region. It is important to monitor the efficacy of glyphosate as resistance becomes more prevalent in weeds of various cropping systems worldwide.

Copyright

Corresponding author

Corresponding author's E-mail: mowen@cyllene.uwa.edu.au.

References

Hide All
Bhowmik, P. C. and Bekech, M. M. 1993. Horseweed (Conyza canadensis) seed production, emergence, and distribution in no-tillage and conventional-tillage corn (Zea mays). Agron. Trends Agric. Sci 1:6771.
Brown, S. M. and Whitwell, T. 1988. Influence of tillage on horseweed, Conyza canadensis . Weed Technol 2:269270.
Buhler, D. D. 1992. Population dynamics and control of annual weeds in corn (Zea mays) as influenced by tillage systems. Weed Sci 40:241248.
Dauer, J. T., Mortensen, D. A., and VanGessel, M. J. 2006. Temporal and spatial dynamics of long distance Conyza canadensis seed dispersal. J. Appl. Ecol 44:105114.
Hashem, A. and Borger, C. 2009. More glyphosate-resistant annual ryegrass populations within Western Australia. Pages 276277. in. Proceedings of Agribusiness Crop Updates 2009. Perth, Western Australia: Department of Agriculture and Food.
Kempen, H. M. and Graf, J. 1981. Weed seed production. Proc. West. Soc. Weed Sci 34:7881.
Michael, P. W. 1977. Some weedy species of Amaranthus (amaranths) and Conyza/Erigeron (fleabanes) naturalised in the Asian-Pacific region. Pages 8795. in. Proceedings of the 6th Asian-Pacific Weed Science Society Conference. Jakarta, Indonesia Asian-Pacific Weed Science Society.
Neve, P., Sadler, J., and Powles, S. B. 2004. Multiple herbicide resistance in a glyphosate-resistant rigid ryegrass (Lolium rigidum) population. Weed Sci 52:920928.
Powles, S. B. 2008. Evolved glyphosate-resistant weeds around the world: lessons to be learnt. Pest Manage. Sci 64:360365.
Preston, C. 2008. Australian Glyphosate Resistance Register. National Glyphosate Sustainability Working Group. http://www.weedscrc.org.au/glyphosate. Accessed: November 5, 2008.
Prieur-Richard, A. H., Lavorel, S., Grigulis, K., and Dos Santos, A. 2000. Plant community diversity and invasibility by exotics: invasion of Mediterranean old fields by Conyza bonariensis and Conyza canadensis . Ecol. Lett 3:412422.
Shields, E. J., Dauer, J. T., VanGessel, M. J., and Neumann, G. 2006. Horseweed (Conyza canadensis) seed collected in the planetary boundary layer. Weed Sci 54:10631067.
VanGessel, M. J. 2001. Glyphosate-resistant horseweed from Delaware. Weed Sci 49:703705.
Widderick, M. and Wu, H. 2008. Weed 10. Fleabane. Pages 178180. in. Section 6. Weeds. CRC for Australian Weed Management, IWM Manual. Adelaide, Australia: Cooperative Research Centre, Weed Management, University of Adelaide.
Wu, H., Walker, S., Rollin, M. J., Tan, D. K. Y., Robinson, G., and Werth, J. 2007. Germination, persistence, and emergence of flaxleaf fleabane [Conyza bonariensis (L.) Cronquist]. Weed Biol. Manage 7:192199.

Keywords

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed