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The role and value of herbicide-resistant lupins in Western Australian agriculture

Author

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  • Schmidt, Carmel P
  • Pannell, David J.

Abstract

Herbicide resistant weeds are having a major impact on Australian agriculture. The most important of these is ryegrass (Lolium rigidum). In response to this new problem, "genetic engineering" techniques are being used to create new types of "transgenic" lupins which are resistant to non-selective herbicides to which the ryegrass is not resistant. In this study the economic value of such a herbicide-resistant lupin variety is investigated using a multiperiod bioeconomic model. The model represents a common cropping system of Western Australia in which winter crops of wheat and lupins are grown in alternate years. The ryegrass population is modelled as being completely resistant to traditionally-used selective herbicides. The net profits for a wide range of weed control measures (both chemical and non-chemical) used separately and in combination with a transgenic lupin were compared with the current options available to farmers. The best integrated strategy involving a transgenic, glufosinate, resistant lupin was found to have a similar profitability to a system based on current lupin varieties employing paraquat for in-crop spraying. However, if a glyphosate-resistant lupin were to be developed and used in conjunction with technology for physical collection or destruction of weed seeds, it was estimated that farm profits would increase by 33 percent.

Suggested Citation

  • Schmidt, Carmel P & Pannell, David J., 1996. "The role and value of herbicide-resistant lupins in Western Australian agriculture," Discussion Papers 232287, University of Western Australia, School of Agricultural and Resource Economics.
    • Handle: RePEc:ags:uwapdp:232287
    DOI: 10.22004/ag.econ.232287
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    File URL: https://ageconsearch.umn.edu/record/232287/files/uwa-discussionpapers-004-096.pdf
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    Cited by:

    1. Pannell, David J. & Stewart, Vanessa & Bennett, Anne & Monjardino, Marta & Schmidt, Carmel & Powles, Stephen B., 2004. "RIM: a bioeconomic model for integrated weed management of Lolium rigidum in Western Australia," Agricultural Systems, Elsevier, vol. 79(3), pages 305-325, March.
    2. Schmidt, Carmel P & Pannell, David J, 1996. "Economic Issues in Management of Herbicide-Resistant Weeds," Review of Marketing and Agricultural Economics, Australian Agricultural and Resource Economics Society, vol. 64(03), pages 1-8, December.
    3. Finlayson, John & Bathgate, Andrew & Nordblom, Tom & Theiveyanathan, Tivi & Farquharson, Bob & Crosbie, Russell & Mitchell, David & Hoque, Ziaul, 2010. "Balancing land use to manage river volume and salinity: Economic and hydrological consequences for the Little River catchment in Central West, New South Wales, Australia," Agricultural Systems, Elsevier, vol. 103(3), pages 161-170, March.
    4. Monjardino, Marta & Pannell, David J. & Powles, Stephen B., 2001. "A Multi-Species Bio-Economic Model For Integrated Weed Management," 2001 Conference (45th), January 23-25, 2001, Adelaide, Australia 125795, Australian Agricultural and Resource Economics Society.

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