The Potential Cost to New Zealand Dairy Farmers from the Introduction of Nitrate-Based Stocking Rate Restrictions
AbstractIntroducing a stocking rate restriction is one possible course of action for regulators to improve water quality where it is affected by nitrate pollution. To determine the impact of a stocking rate restriction on a range of New Zealand dairy farms, a whole-farm model was optimised with and without a maximum stocking rate of 2.5 cows per hectare. Three farm systems, which differ by their level of feed-related capital, were examined for the changes to the optimal stocking rate and optimal level of animal milk production genetics when utility was maximised. The whole-farm model was optimised through the use of an evolutionary algorithm called differential evolution. The introduction of a stocking rate restriction would have a very large impact on the optimally organised high feed-related capital farm systems, reducing their certainty equivalent by almost half. However, there was no impact on the certainty equivalent of low feed-related capital systems.
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Bibliographic InfoPaper provided by International Association of Agricultural Economists in its series 2006 Annual Meeting, August 12-18, 2006, Queensland, Australia with number 25620.
Date of creation: 2006
Date of revision:
environmental regulation; dairy farms; whole-farm model; evolutionary algorithm; Environmental Economics and Policy; Livestock Production/Industries; Q12; Q52; C61;
Other versions of this item:
- Mark Neal, 2005. "The potential cost to New Zealand dairy farmers from the introduction of nitrate-based stocking rate restrictions," Murray-Darling Program Working Papers WP8M05, Risk and Sustainable Management Group, University of Queensland.
- Q12 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Agriculture - - - Micro Analysis of Farm Firms, Farm Households, and Farm Input Markets
- Q52 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics - - - Pollution Control Costs; Distributional Effects; Employment Effects
- C61 - Mathematical and Quantitative Methods - - Mathematical Methods; Programming Models; Mathematical and Simulation Modeling - - - Optimization Techniques; Programming Models; Dynamic Analysis
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- Mayer, D. G. & Kinghorn, B. P. & Archer, A. A., 2005. "Differential evolution - an easy and efficient evolutionary algorithm for model optimisation," Agricultural Systems, Elsevier, vol. 83(3), pages 315-328, March.
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