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The role and value of eastern star clover in managing herbicide-resistant crop weeds: A whole-farm analysis

  • Gibson, Lauren
  • Kingwell, Ross
  • Doole, Graeme

In the broadacre dryland farming system of Western Australia herbicide resistance in major crop weeds is an increasingly serious problem. A new option to combat herbicide resistance involves growing eastern star clover (Trifolium dasyurum). This is a new pasture legume with a unique delayed germination that allows control of weeds using various chemical and non-chemical strategies, without unduly compromising the pasture's subsequent production. This study assesses the role and value of eastern star clover in managing herbicide-resistant weeds on various farms. The study employs the farming system model known as MIDAS, a whole-farm, bioeconomic model. Key scenarios of different degrees of severity of herbicide resistance for three farm types are examined. The main findings of the analysis are that as the severity of herbicide resistance increases, eastern star clover becomes an increasingly attractive option. Although the introduction of eastern star clover does reduce a farm's capacity to carry sheep, and thereby lessens profits generated by the sheep enterprise, it enables longer, more profitable sequences of crops to be grown with fewer weed problems. Sensitivity analysis suggests that reduced cost of eastern star clover seed, cheap supplementary feed, and higher grain prices will further increase the profitability of eastern star clover.

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File URL: http://www.sciencedirect.com/science/article/B6T3W-4T9BXNV-1/2/9e50591108b1ff2846478c7d7bed06c4
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Article provided by Elsevier in its journal Agricultural Systems.

Volume (Year): 98 (2008)
Issue (Month): 3 (October)
Pages: 199-207

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Handle: RePEc:eee:agisys:v:98:y:2008:i:3:p:199-207
Contact details of provider: Web page: http://www.elsevier.com/locate/agsy

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  1. Pannell, David J. & Malcolm, Bill & Kingwell, Ross S., 2000. "Are we risking too much? Perspectives on risk in farm modelling," Agricultural Economics, Blackwell, vol. 23(1), pages 69-78, June.
  2. Marsh, Sally P. & Pannell, David J. & Lindner, Robert K., 2004. "Does agricultural extension pay? A case study for a new crop, lupins, in Western Australia," Agricultural Economics of Agricultural Economists, International Association of Agricultural Economists, vol. 30(1), January.
  3. 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.
  4. Kingwell, R., 2002. "Sheep animal welfare in a low rainfall Mediterranean environment: a profitable investment?," Agricultural Systems, Elsevier, vol. 74(2), pages 221-240, November.
  5. Abadi Ghadim, Amir K. & Pannell, David J., 1991. "Economic trade-off between pasture production and crop weed control," Agricultural Systems, Elsevier, vol. 36(1), pages 1-15.
  6. O'Connell, Michael & Young, John & Kingwell, Ross, 2006. "The economic value of saltland pastures in a mixed farming system in Western Australia," Agricultural Systems, Elsevier, vol. 89(2-3), pages 371-389, September.
  7. Marra, Michele & Pannell, David J. & Abadi Ghadim, Amir, 2003. "The economics of risk, uncertainty and learning in the adoption of new agricultural technologies: where are we on the learning curve?," Agricultural Systems, Elsevier, vol. 75(2-3), pages 215-234.
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