REGIONAL AGRICULTURAL PRODUCTION SYSTEMS: ESTIMATES FOR WESTERN AUSTRALIA

A regional model, be it computable general equilibrium or partial equilibrium in construct, which is based on the national parameters would certainly provide misleading results if the regional economy or sector is significantly different from its national counterpart. For a credible and useful quantitative analysis of the regional impacts of changes in, say, government policies or international events, one thus needs an empirically based economic model that reflects the key features of the regional economy or sector concerned. This is the motivation for this paper, which estimates a disaggregated agricultural production system for Western Australia (WA): a key farming State of Australia. The paper uses a profit function approach that explicitly recognizes jointness in agricultural production and various climatic zones in WA, and an estimation procedure that involves the Diewert–Wales decomposition technique. It presents estimates of elasticities of supply responses and input demands in WA agriculture, and compares these with the national estimates.