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Embedded risk management in dryland sheep systems II. Risk analysis

Author

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  • Gicheha, M.G.
  • Edwards, G.R.
  • Bell, S.T.
  • Burtt, E.S.
  • Bywater, A.C.

Abstract

Climatic variability is a major constraint to improved productivity and profitability in dryland grazing systems. This paper reports the physical and economic benefits obtained from incorporating tactical responses in risk management strategies for dryland sheep production systems constrained by climatic variability. A total of 112 potential risk management strategy:response combinations were evaluated using the simulation model LincFarm. The strategies differed in stocking rate (SR; stock units (SU) ha−1), pasture type (legume or grass-based system), and stock classes. All strategies were evaluated at 10, 12, 14 or 16 SR, first without tactical responses and then with responses triggered when soil moisture levels fell to 10.0%, 12.5% or 15.0% in the top 25cm soil. The results show that all strategies including tactical adjustments to management and marketing were economically superior to those that did not vary tactically. The difference in average returns between the best strategy with tactical responses and the best without is $336.04ha−1 year−1, an increase of 40%. The value of including tactical responses in corresponding strategies ranged between 2.98% and 37.32%. This was in addition to tactical responses decreasing the variability of returns by between 19.74% and 67.38%. The combination of risk and return defines a risk-efficient frontier on which any individual farmer should find an optimal strategy which reflects their risk attitude. By including tactical adjustments additional strategies become risk-efficient and the number on the frontier increased from 5 to 11. Comparing the two sets of strategies showed that failure to incorporate tactical adjustments may result in sub-optimal risk management strategies being chosen whereas failure to accommodate risk attitude may change the strategy chosen, but not necessarily to one that is sub-optimal. The results suggest conventional ryegrass:clover pastures are risk efficient when management is aggressive (high stocking rate and later climate response) and that either conventional pasture systems or those with high nutritive value species are superior when management is more conservative. In all cases, retaining a proportion of flexible stock classes such as 2year old cattle or a mob of older ewes is essential. The results also emphasise the importance of maintaining high pasture quality to ensure fast lamb growth rates and early drafting.

Suggested Citation

  • Gicheha, M.G. & Edwards, G.R. & Bell, S.T. & Burtt, E.S. & Bywater, A.C., 2014. "Embedded risk management in dryland sheep systems II. Risk analysis," Agricultural Systems, Elsevier, vol. 124(C), pages 1-11.
  • Handle: RePEc:eee:agisys:v:124:y:2014:i:c:p:1-11
    DOI: 10.1016/j.agsy.2013.05.001
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    References listed on IDEAS

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    1. Dorward, Andrew, 1999. "Modelling embedded risk in peasant agriculture: methodological insights from northern Malawi," Agricultural Economics, Blackwell, vol. 21(2), pages 191-203, October.
    2. Diaz-Solis, H. & Kothmann, M.M. & Grant, W.E. & De Luna-Villarreal, R., 2006. "Use of irrigated pastures in semi-arid grazinglands: A dynamic model for stocking rate decisions," Agricultural Systems, Elsevier, vol. 88(2-3), pages 316-331, June.
    3. Cacho, O. J. & Bywater, A. C. & Dillon, J. L., 1999. "Assessment of production risk in grazing models," Agricultural Systems, Elsevier, vol. 60(2), pages 87-98, May.
    4. Mjelde, James W. & Dixon, Bruce L. & Sonka, Steven T., 1989. "Estimating The Value Of Sequential Updating Solutions For Intrayear Crop Management," Western Journal of Agricultural Economics, Western Agricultural Economics Association, vol. 0(Number 1), pages 1-8, July.
    5. Cacho, O. J. & Finlayson, J. D. & Bywater, A. C., 1995. "A simulation model of grazing sheep: II. Whole farm model," Agricultural Systems, Elsevier, vol. 48(1), pages 27-50.
    6. Hardaker, J. Brian & Lien, Gudbrand D., 2003. "Stochastic Efficiency Analysis With Risk Aversion Bounds: A Simplified Approach," Working Papers 12954, University of New England, School of Economics.
    7. Dorward, Andrew, 1999. "Modelling embedded risk in peasant agriculture: methodological insights from northern Malawi," Agricultural Economics, Blackwell, vol. 21(2), pages 191-203, October.
    8. Diaz-Solis, H. & Kothmann, M. M. & Hamilton, W. T. & Grant, W. E., 2003. "A simple ecological sustainability simulator (SESS) for stocking rate management on semi-arid grazinglands," Agricultural Systems, Elsevier, vol. 76(2), pages 655-680, May.
    9. Finlayson, J. D. & Cacho, O. J. & Bywater, A. C., 1995. "A simulation model of grazing sheep: I. Animal growth and intake," Agricultural Systems, Elsevier, vol. 48(1), pages 1-25.
    10. Marshall, Graham R. & Jones, Randall E. & Wall, Lisa M., 1997. "Tactical Opportunities, Risk Attitude and Choice of Farming Strategy: an Application of the Distribution Method," Australian Journal of Agricultural and Resource Economics, Australian Agricultural and Resource Economics Society, vol. 0(Issue 4), pages 1-21.
    11. 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.
    12. Kingwell, Ross S. & Pannell, David J. & Robinson, Stephen D., 1993. "Tactical responses to seasonal conditions in whole-farm planning in Western Australia," Agricultural Economics, Blackwell, vol. 8(3), pages 211-226, March.
    13. Kingwell, R. S., 1994. "Risk attitude and dryland farm management," Agricultural Systems, Elsevier, vol. 45(2), pages 191-202.
    14. Kay, Ronald D. & Edwards, William M., 1999. "Farm Management," Staff General Research Papers Archive 1374, Iowa State University, Department of Economics.
    15. Dorward, Andrew, 1994. "Farm Planning with Resource Uncertainty: A Semi-sequential Approach," European Review of Agricultural Economics, Foundation for the European Review of Agricultural Economics, vol. 21(2), pages 309-324.
    16. Jolly, Robert W., 1983. "Risk Management in Agricultural Production," Staff General Research Papers Archive 11459, Iowa State University, Department of Economics.
    17. Hardaker, J. Brian & Pandey, Sushil & Patten, Louise H., 1991. "Farm Planning under Uncertainty: A Review of Alternative Programming Models," Review of Marketing and Agricultural Economics, Australian Agricultural and Resource Economics Society, vol. 0(Number 01), pages 1-14, April.
    18. Kay, Ronald D. & Edwards, William M., 1999. "Farm Management: Instructor's Manual," Staff General Research Papers Archive 1373, Iowa State University, Department of Economics.
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