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RESEARCH ARTICLE

Weed management practices in glyphosate-tolerant and conventional cotton fields in Australia

J. A. Werth A B F , C. Preston A , G. N. Roberts C D and I. N. Taylor B E
+ Author Affiliations
- Author Affiliations

A School of Wine and Agriculture, University of Adelaide and CRC for Australian Weed Management, PMB 1, Waite Campus, Glen Osmond, SA 5064, Australia.

B Cotton Catchment Communities Cooperative Research Centre, Locked Bag 1001, Narrabri, NSW 2390, Australia.

C CSIRO Plant Industry, Locked Bag 59, Narrabri, NSW 2390, Australia.

D Current address: ‘Stradbrooke Park’, PO Box 207, Clare, SA 5453, Australia.

E Cotton Research and Developent Corporation, PO Box 282, Narrabri, NSW 2390, Australia.

F Corresponding author: Email: jeff.werth@dpi.qld.gov.au

Australian Journal of Experimental Agriculture 46(9) 1177-1183 https://doi.org/10.1071/EA05163
Submitted: 17 June 2005  Accepted: 2 November 2005   Published: 4 August 2006

Abstract

Forty growers in 4 major cotton-growing regions in Australia were surveyed in 2003 to investigate how the adoption of glyphosate-tolerant cotton (Roundup Ready) had influenced herbicide use, weed management techniques, and whether changes to the weed spectrum could be identified. The 10 most common weeds reported on cotton fields were the same in glyphosate-tolerant and conventional fields in this survey. Herbicide use patterns were altered by the adoption of glyphosate-tolerant cotton with up to 6 times more glyphosate usage, but 21% fewer growers applying pre-emergence herbicides in glyphosate-tolerant fields. Other weed control practices such as the use of post-emergence herbicides, inter-row cultivation and hand hoeing were only reduced marginally. However, growers indicated that management practices are likely to change over time, especially with the introduction of enhanced glyphosate tolerance technology (Roundup Ready Flex), and anticipate a 32% decrease in the number of growers using alternative weed management practices. To date, management practices other than glyphosate use have not changed markedly in glyphosate-tolerant cotton indicating a conservative approach by growers adopting this technology and reflecting the narrow window of herbicide application. The range of weed control options still being employed in glyphosate-tolerant cotton would not increase the risk of glyphosate resistance development.

Additional keywords: integrated weed management, resistance, survey, Roundup Ready.


Acknowledgments

We thank the growers who participated in this survey for their time and willingness to have their farm records examined. Assistance from Greg Constable and Lewis Wilson was also appreciated. This research was funded by the Cooperative Research Centre (CRC) for Australian Weed Management and the Australian Cotton CRC.


References


Bariuan JV, Reddy KN, Wills GD (1999) Glyphosate injury, rainfastness, absorption, and translocation in purple nutsedge (Cyperus rotundus). Weed Technology 13, 112–119.

Betts KJ, Ehlke NJ, Wyse DL, Gronwald JW, Somers DA (1991) Mechanism of inheritance of diclofop resistance in Italian ryegrass (Lolium multiflorum). Weed Science 40, 184–189.

Charles GW (1991) A grower survey of weeds and herbicide use in the New South Wales cotton industry. Australian Journal of Experimental Agriculture 31, 387–392.
CrossRef |

Charles GW, Constable GA, Kennedy IR (1995) Current and future weed control practices in cotton: the potential use of transgenic herbicide resistance. In ‘Herbicide-resistant crops and pastures in Australian farming systems’. (Eds GD Mclean, G Evans) pp. 89–100. (Bureau of Resource Sciences: Parkes, ACT)

Crop Life Australia (2006) Herbicide resistance management strategies. Available at http://www.croplifeaustralia.org.au/files/managingresistance/Herbicide%20Resistance%20Management%20Strategies.pdf (verified 11 July 2006)

Doyle B, Reeve I, Bock K (2003) The performance of Roundup Ready cotton in the 2001–2002 Australian cotton season. A report prepared for the Cotton Research and Development Corporation. The Institute for Rural Futures, University of New England, Armidale, NSW.

Dowling D (2003) 2002–03 cotton season. p. 4. In ‘Cotton Yearbook 2003’. (The Australian Cotton Grower: Toowoomba, Qld)

Faircloth WH, Patterson MG, Dale Monks C, Goodman WR (2001) Weed management programs for glyphosate-tolerant cotton. Weed Technology 15, 544–551.
CrossRef |


Jasieniuk M, Brule-Babel AL, Morrison IN (1996) The evolution and genetics of herbicide resistance in weeds. Weed Science 44, 176–193.

Jones MA, Snipes CE (1999) Tolerance of transgenic cotton to topical applications of glyphosate. Journal of Cotton Science 3, 19–26.

Lin W, Price GK, Fernandez-Cornejo J (2001) Estimating farm-level effects of adopting herbicide-tolerant soybeans. Oil crops situation and outlook. Economic Research Service, USDA. Available at http://www.ers.usda.gov/briefing/soybeansoilcrops/pdf/HerbTolSoybeansOCSOct2001.pdf (verified 20 June 2006)

May OL, Culpepper AS, Cerny RE, Coots CB, Corken CB , et al. (2004) Transgenic cotton with improved resistance to glyphosate herbicide. Crop Science 44, 234–240.

Pline WA, Wilcut JW, Duke SO, Edmisten KL, Wells R (2002) Tolerance and accumulation of shikimic acid in response to glyphosate applications in glyphosate-resistant and nonglyphosate-resistant cotton (Gossypium hirsutum L.). Journal of Agricultural and Food Chemistry 50, 506–512.
CrossRef | PubMed |

Preston C, Rieger MA (2000) Managing herbicide resistance in weeds from use of herbicide tolerant crops. Plant Protection Quarterly 15, 77–79.

Preston C, Roush RT (1998) Variation in herbicide dose rates: risks associated with herbicide resistance. In ‘Precision weed management in crops and pastures. Proceedings of workshop at Wagga Wagga, NSW’. (Eds RW Medd, JE Pratley) pp. 128–137. (CRC for Weed Management Systems: Glen Osmond, SA)

Roberts GN (1998) Developing integrated weed management systems for cotton. In ‘Proceedings of the 2nd world cotton conference’.

Roberts GN (1999) Herbicide tolerant cotton — preparing for change. In ‘Proceedings of the 12th Australian weeds conference’. pp. 618–622.

Serecon Management Consulting Inc. and Koch Paul Associates (2001) An agronomic and economic assessment of transgenic canola. Canola Council of Canada. Available at http://www.canola-council.org/report_gmo.html (verified 27 May 2006)

Stanley M (2006) Triazine tolerant canola. Primary Industries and Resources. Available at http://www.pir.sa.gov.au/byteserve/agriculture/agfactsheets/fieldcrops/tricanla.pdf (verified 18 July 2006)

VanGessel MJ (2001) Glyphosate-resistant horseweed from Delaware. Weed Science 49, 703–705.
CrossRef |


Walker SR, Taylor IN, Milne G, Osten VA, Hoque Z, Farquharson RJ (2005) A survey of management and economic impact of weeds in dryland cotton cropping systems of subtropical Australia. Australian Journal of Experimental Agriculture 45, 79–91.
CrossRef |








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