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High Levels of Herbicide Resistance in Rigid Ryegrass (Lolium rigidum) in the Wheat Belt of Western Australia

Published online by Cambridge University Press:  20 January 2017

Rick S. Llewellyn  and
Stephen B. Powles
Rick S. Llewellyn*
Affiliation:
Western Australian Herbicide Resistance Initiative and Agricultural and Resource Economics Group, Faculty of Agriculture, University of Western Australia, Nedlands, WA 6907
Stephen B. Powles
Affiliation:
Western Australian Herbicide Resistance Initiative, Faculty of Agriculture, University of Western Australia, Nedlands, WA 6907
*
Corresponding author's E-mail: [email protected].
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Abstract

A random survey of 264 cropping fields in the Western Australian wheat belt was conducted to determine the extent of rigid ryegrass resistance to commonly used acetolactate synthase- and acetyl-CoA carboxylase-inhibiting herbicides. Rigid ryegrass infestation density was assessed and seed samples collected and subsequently tested for resistance to diclofop-methyl, clethodim, chlorsulfuron, and sulfometuron. Of these randomly collected populations, 46% exhibited resistance to diclofop-methyl and 64% to chlorsulfuron, with 37% exhibiting multiple resistance to both herbicides. Only 28% of tested populations were classified as susceptible to both diclofop-methyl and chlorsulfuron, although all but one population were susceptible to clethodim. Large differences in the proportion of fields containing resistant populations were found between agronomic areas, reflecting different cropping and, therefore, herbicide use history. There was no significant association between resistance status and the density at which rigid ryegrass was present. Herbicide-resistant rigid ryegrass populations are now more common than susceptible populations across much of the Western Australian wheat belt.

Keywords

Chlorsulfuronclethodimdiclofop-methylsulfometuronrigid ryegrass, Lolium rigidum Gaud. #3LOLRIWeed densityACCase, acetyl-CoA carboxylaseALS, acetolactate synthase
Type
Research
Information
Weed Technology , Volume 15 , Issue 2 , June 2001 , pp. 242 - 248
Copyright
Copyright © Weed Science Society of America 

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References

Literature Cited

Anonymous. 1999a. Australian Crop Report. Australian Bureau of Agricultural and Resource Economics, Canberra.Google Scholar
Anonymous. 1999b. Australian Farm Surveys Report. Australian Bureau of Agricultural and Resource Economics, Canberra.Google Scholar
Beckie, H. J., Thomas, G., Legere, A., Kelner, D. J., Van Acker, R. C., and Meers, S. 1999. Nature, occurrence, and cost of herbicide resistant wild oats (Avena fatua) in small-grain production areas. Weed Technol. 13: 612–625.CrossRefGoogle Scholar
Bourgeois, L., Morrison, I. N., and Kelner, D. J. 1997. Field and producer survey of ACCase resistant wild oat in Manitoba. Can. J. Plant Sci. 77: 709–715.CrossRefGoogle Scholar
Burnet, M.W.M., Hart, Q., Holtum, J.A.M., and Powles, S. B. 1994. Resistance to nine herbicide classes in a population of rigid ryegrass (Lolium rigidum). Weed Sci. 42: 369–377.Google Scholar
Christopher, J. T., Powles, S. B., and Holtum, J.A.M. 1992. Resistance to acetolactate synthase-inhibiting herbicides in annual ryegrass (Lolium rigidum) involves at least two mechanisms. Plant Physiol. 100: 1909–1913.CrossRefGoogle ScholarPubMed
Gill, G. 1995. Development of herbicide resistance in annual ryegrass populations (Lolium rigidum Gaud.) in the cropping belt of Western Australia. Aust. J. Exp. Agric. 35: 67–72.CrossRefGoogle Scholar
Gorddard, R. J., Pannell, D. J., and Hertzler, G. 1995. An optimal control model for integrated weed management under herbicide resistance. Aust. J. Agric. Econ. 39: 71–87.Google Scholar
Hall, L. M., Holtum, J.A.M., and Powles, S. B. 1994. Mechanisms responsible for cross resistance and multiple resistance. In Powles, S. B. and Holtum, J. A. M., eds. Herbicide Resistance in Plants: Biology and Biochemistry. Boca Raton, FL: Lewis Publishers. pp. 243–262.Google Scholar
Heap, I. M. and Knight, R. 1990. Variation in herbicide cross-resistance among populations of annual ryegrass (Lolium rigidum) resistant to diclofop-methyl. Aust. J. Agric. Res. 41: 121–128.CrossRefGoogle Scholar
Nietschke, B. 1997. Wild Oat Management in Southern Australian Farming Systems. Ph.D. dissertation. University of Adelaide, Roseworthy, Australia.Google Scholar
Orson, J. H. 1999. The cost to the farmer of herbicide resistance. Weed Technol. 13: 607–611.CrossRefGoogle Scholar
Powles, S. B. and Bowran, D. G. 2000. Crop weed management systems. In Sindel, B. M., ed. Australian Weed Management Systems. Melbourne: R. G. and F. J. Richardson. pp. 287–306.Google Scholar
Pratley, J. E., Graham, R. J., and Leys, A. R. 1993. Determination of the extent of herbicide resistance in southern NSW. In Proc. 10th Aust. Weeds Conf. Brisbane, Australia. pp. 286–288.Google Scholar
Tardif, F. J., Preston, C., and Powles, S. B. 1997. Mechanisms of herbicide resistance in Lolium rigidum . In De Prado, R., Jorrin, J., and Garcia-Torres, L., eds. Weed and Crop Resistance to Herbicides. Dordrecht: Kluwer Academic Publishers. pp. 117–124.CrossRefGoogle Scholar
Tardif, F. J., Holton, J.A.M., and Powles, S. B. 1993. Occurrence of a herbicide resistant acetyl-coenzyme A carboxylase mutant in annual ryegrass (Lolium rigidum) selected by sethoxydim. Planta. 190: 176–181.CrossRefGoogle Scholar