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Economic contribution of French serradella ( Ornithopus sativus Brot.) pasture to integrated weed management in Western Australian mixed-farming systems: an application of compressed annealing

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  • Doole, Graeme J.
  • Pannell, David J.
  • Revell, Clinton K.

Abstract

Sowing phases of French serradella ( Ornithopus sativus Brot.) pasture between extended cropping sequences in the Western Australian wheatbelt can sustain grain production through restoring soil fertility and reducing selective herbicide use. The objective of this article is to investigate the profitability of rotations involving this pasture under a variety of weed management scenarios to obtain greater insight into its value for mixed farming systems in this region. A stochastic search procedure, compressed annealing, is used to identify profitable sets of weed management strategies in a simulation model representing a large number of potential combinations of chemical and non-chemical forms of weed control. In contrast to a continuous-cropping sequence, the inclusion of a serradella phase in a rotation is profitable at high weed densities and with increasing levels of herbicide resistance. A single year of pasture in the rotation is optimal if resistance to Group A selective herbicides is present at the beginning of the planning horizon, but a three-year phase is required if resistance to multiple herbicide groups is observed. Sowing a serradella pasture twice over a two-year phase is also shown to be economically attractive given benefits of successive high weed kills.

Suggested Citation

  • Doole, Graeme J. & Pannell, David J. & Revell, Clinton K., 2009. "Economic contribution of French serradella ( Ornithopus sativus Brot.) pasture to integrated weed management in Western Australian mixed-farming systems: an application of compressed annealing," Australian Journal of Agricultural and Resource Economics, Australian Agricultural and Resource Economics Society, vol. 53(2), pages 1-20.
    • Handle: RePEc:ags:aareaj:161921
    DOI: 10.22004/ag.econ.161921
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    1. K. J. Arrow & M.D. Intriligator (ed.), 2000. "Handbook of Mathematical Economics," Handbook of Mathematical Economics, Elsevier, edition 4, volume 1, number 1.
    2. David J. Pannell, 2006. "Flat Earth Economics: The Far-reaching Consequences of Flat Payoff Functions in Economic Decision Making," Review of Agricultural Economics, Agricultural and Applied Economics Association, vol. 28(4), pages 553-566.
    3. Jeffrey W. Ohlmann & James C. Bean & Shane G. Henderson, 2004. "Convergence in Probability of Compressed Annealing," Mathematics of Operations Research, INFORMS, vol. 29(4), pages 837-860, November.
    4. Pannell, D. J. & Falconer, D. A., 1988. "The relative contributions to profit of fixed and applied nitrogen in a crop-livestock farm systems," Agricultural Systems, Elsevier, vol. 26(1), pages 1-17.
    5. 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.
    6. Graeme J. Doole & David J. Pannell, 2008. "Optimisation of a Large, Constrained Simulation Model using Compressed Annealing," Journal of Agricultural Economics, Wiley Blackwell, vol. 59(1), pages 188-206, February.
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    Cited by:

    1. Monjardino, Marta & Loi, Angelo & Thomas, Dean T. & Revell, Clinton K. & Flohr, Bonnie M. & Llewellyn, Rick S. & Norman, Hayley C., 2022. "Improved legume pastures increase economic value, resilience and sustainability of crop-livestock systems," Agricultural Systems, Elsevier, vol. 203(C).
    2. Doole, Graeme J. & Pannell, David J., 2013. "A process for the development and application of simulation models in applied economics," Australian Journal of Agricultural and Resource Economics, Australian Agricultural and Resource Economics Society, vol. 57(1), pages 1-25.
    3. Beltran, Jesusa C. & Pannell, David J. & Doole, Graeme J., 2011. "Economic impacts of high labour cost and herbicide resistance for the management of annual barnyardgrass (Echinochloa crus-galli) in rice production in the Philippines," Working Papers 108770, University of Western Australia, School of Agricultural and Resource Economics.
    4. Pech, Caris L. & Doole, Graeme J. & Pluske, Johanna M., 2009. "Economic management of anthelmintic resistance: model and application," Australian Journal of Agricultural and Resource Economics, Australian Agricultural and Resource Economics Society, vol. 53(4), pages 1-18.
    5. Doole, Graeme J. & Weetman, Ellen, 2009. "Tactical management of pasture fallows in Western Australian cropping systems," Agricultural Systems, Elsevier, vol. 102(1-3), pages 24-32, October.
    6. Jacobs, A. & Kingwell, R., 2016. "The Harrington Seed Destructor: Its role and value in farming systems facing the challenge of herbicide-resistant weeds," Agricultural Systems, Elsevier, vol. 142(C), pages 33-40.
    7. Caris L. Pech & Graeme J. Doole & Johanna M. Pluske, 2009. "Economic management of anthelmintic resistance: model and application ," Australian Journal of Agricultural and Resource Economics, Australian Agricultural and Resource Economics Society, vol. 53(4), pages 585-602, October.

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