Optimal Control of Locusts in Subsistence Farming Areas
Locust swarms hit subsistence-staple-crop-growing households at random and are not privately controllable. A regional aerial-spraying scheme that supports these households’ livelihood at the least cost is proposed. The properties of this scheme are analysed and two steady states are identified. The saddle one is socio-economically superior to the stable spiral. Simulations reveal that the respective stationary probability of a household’s crop being devoured by the swarm diminishes with the number of households, yield per household, staple crop’s replacement price and spraying efficacy, but rises with the spraying cost coefficient, locusts’ multiplication rate and public planner’s discount rate.
|Date of creation:||2006|
|Date of revision:|
|Contact details of provider:|| Postal: School of Economics, University of Wollongong, Northfields Avenue, Wollongong NSW 2522 Australia|
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- Cowan, Robin & Gunby, Philip, 1996. "Sprayed to Death: Path Dependence, Lock-In and Pest Control Strategies," Economic Journal, Royal Economic Society, vol. 106(436), pages 521-42, May.
- Jean-Daniel M. Saphores, 2000. "The Economic Threshold with a Stochastic Pest Population: A Real Options Approach," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 82(3), pages 541-555.
- Carlson, Gerald A. & Zilberman, David & Miranowski, John, 1993. "Agricultural and Resource Economics," Staff General Research Papers 11104, Iowa State University, Department of Economics.
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