Skip to main content
×
×
Home

Population Ecology and Management of Rigid Brome (Bromus rigidus) in Australian Cropping Systems

  • Samuel G. L. Kleemann (a1) and Gurjeet S. Gill (a1)
Abstract

Rigid brome is a problematic weed of southern Australian cropping systems. Increased knowledge about the ecology of rigid brome and the influence of management strategies on its seedbank dynamics could facilitate development of more effective weed control programs. A field study was undertaken to investigate seedbank persistence and the influence of different management strategies on rigid brome control at Lock in South Australia during 2003 to 2005. Seeds of rigid brome were found to persist in the soil for up to 3 yr, with > 20% of the seedbank persisting from one season to the next. Therefore, a single year management program against this weed species is likely to be ineffective and could result in rapid buildup in weed infestations. However, management strategies that combined effective herbicides (ClearfieldTM technology) and crop competition over consecutive years provided effective control of this troublesome weed. Such cropping systems reduced rigid brome density (1 to 10 plants m−2) and seed production (8 to 160 seeds m−2) in the final crop of the 3-yr cropping sequence as compared to common grower practice of trifluralin and triasulfuron mixtures (138 plants m−2; 1,866 seeds m−2). These treatment combinations were able to deplete the initial seedbank (1,748 seeds m−2) to manageable levels (< 5 seeds m−2) within 3 yr. The results of this study should provide growers with confidence that severe rigid brome infestations can be managed effectively without compromising crop productivity.

Copyright
Corresponding author
Corresponding author's E-mail: samuel.kleemann@adelaide.edu.au
References
Hide All
Boutsalis P. and Preston C. 2006. Resistance to acetyl-coenzyme A carboxylase (ACCase)-inhibiting herbicides in Bromus spp. in Australia. Pages 538540. in Preston C., Watts J. H., and Crossman N. D. Proceedings of the 15th Australian Weeds Conference. Adelaide, Australia: Weed Management Society of South Australia.
Buhler D. D., Kohler K. A., and Thompson R. L. 2001. Weed seed bank dynamics during a five-year crop rotation. Weed Technol. 15:170176.
Cheam A. H. 1987. Longevity of Bromus diandrus Roth. seed in soil at three sites in Western Australia. Plant Prot. Q. 2:137139.
D'Emden F. H. and Llewellyn R. S. 2004. No-till adoption and the weed management challenge. Pages 597600. in Sindel B. M. and Johnson S. B. Proceedings of the 14th Australian Weeds Conference. Wagga Wagga, Australia: Weed Society of New South Wales.
Farhoodi A., Unkovich M., and Bartolome M. 2004. A strategic approach to incorporating non-cereal crops in low rainfall regions of southern Australia: a preliminary analysis of probable yields. in Fischer T. Proceedings of the 4th International Crop Science Congress. Brisbane, Australia: The Australian Society of Agronomy. Available at http://www.cropscience.org.au.
Gill G. S. and Carstairs S. A. 1988. Morphological, cytological and ecological discrimination of Bromus rigidus from Bromus diandrus . Weed Res. 28:399405.
Gill G. S. and Davidson R. M. 2000. Weed interference. Pages 6180. in Sindel B. Australian Weed Management Systems. Meredith, Australia Cooperative Research Centre for Weed Management Systems. R.G. and F.J. Richardson.
Gill G. S., Poole M. L., and Holmes J. E. 1987. Competition between wheat and brome grass in Western Australia. Aust. J. Exp. Agric. 27:291294.
Gleichsner J. A. and Appleby A. P. 1989. Effect of depth and duration of seed burial on ripgut brome (Bromus rigidus). Weed Sci. 37:6872.
Hashem A., Douglas A., and Borger C. 2006. ClearfieldTM wheat to control hard-to-kill weeds. Pages 367370. in Preston C., Watts J. H., and Crossman N. D. Proceedings of the 15th Australian Weeds Conference. Adelaide, Australia: Weed Management Society of South Australia.
Heap I. 2008. The International Survey of Herbicide Resistant Weeds. www.weedscience.com.
Kleemann S. G. L. and Gill G. S. 2006. Differences in the distribution and seed germination behaviour of populations of Bromus rigidus and Bromus diandrus in South Australia: adaptations to habitat and implications for weed management. Aust. J. Agric. Res. 57:213219.
Kon K. F. and Blacklow W. M. 1988a. Bromus diandrus Roth and B. rigidus Roth. Pages 1327. in Groves R., Shepherd R., and Richardson R. The Biology of Australian Weeds, Volume 1. Melbourne, Australia R.G. and F.J. Richardson.
Kon K. F. and Blacklow W. M. 1988b. Identification, distribution and population variability of great brome (Bromus diandrus Roth) and rigid brome (Bromus rigidus Roth). Aust. J. Agric. Res. 39:10391050.
Lemerle D., Verbeek B., Cousens R. D., and Coombes N. E. 1996. The potential for selecting wheat varieties strongly competitive against weeds. Weed Res. 36:505513.
Maxwell B. D., Smith R. G., and Brelsford M. 2007. Wild oat (Avena fatua) seed bank dynamics in transition to organic wheat production systems. Weed Sci. 55 (3):212217.
Mock I. T. 1987. Distribution and severity of brome grass in barley crops in the Victorian Mallee. Plant Prot. Q. 2:135136.
SILO 2008. SILO-Meteorology for the Land, Australian Government Bureau of Meteorlogy. www.bom.gov.au/silo/.
Steadman K. J., Bignell G. P., and Ellery A. J. 2003. Field assessment of thermal after-ripening time for dormancy release prediction in Lolium rigidum seeds. Weed Res. 43:458465.
Stump W. L. and Westra P. 2000. The seedbank dynamics of feral rye (Secale cereale). Weed Technol. 14 (1):714.
Vandeleur R. K. and Gill G. S. 2004. The impact of plant breeding on the grain yield and competitive ability of wheat in Australia. Aust. J. Agric. Res. 55:855861.
Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

Weed Science
  • ISSN: 0043-1745
  • EISSN: 1550-2759
  • URL: /core/journals/weed-science
Please enter your name
Please enter a valid email address
Who would you like to send this to? *
×

Keywords:

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 6 *
Loading metrics...

Abstract views

Total abstract views: 50 *
Loading metrics...

* Views captured on Cambridge Core between 20th January 2017 - 18th February 2018. This data will be updated every 24 hours.