Abstract
Since the 1990s, agri-biotech multinationals have introduced a radical innovation in the form of seeds derived from genetically modified plant varieties or GMVs. However, on the basis of the ‘precautionary principle’ that advocates ensuring a higher environmental protection through preventative decision-taking, many countries have banned the cultivation of GMVs within their territories. Thus, the objective of the present paper is to attempt to explore the rationale for application of the precautionary principle. This is done through development of an evolutionary model of farmers’ technology choice incorporating intrinsic features of agriculture such as the technological obsolescence of seed varieties, impact of environmental degradation engendered by new seed technology adoption and farmers’ compliance choice vis-à-vis sustainability guidelines. Further, instead of a unique representative farmer, two types of farmers are considered. The first type is driven by short term profit maximization, while the second type aims to be sustainable, by maximizing profit over the life time of the technology. Integrating the above elements and considering two possible rules for application of the precautionary principle, the paper explores the conditions under which the precautionary principle can be implemented. It demonstrates that, even under complete and perfect information the need to exercise such caution depends principally on four factors: the economic gains from GMVs, the possibilities for sustaining the production of the conventional variety in the post-GMV period via compliance, the distribution of farmers over types and the compliance-contamination burden.
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Notes
The Green Revolution was a technology package involving improved quality seeds, controlled irrigation and measured doses of fertilizers. Created by the agricultural scientist Norman Borlaug, these modern variety seeds were a new dwarf variety of wheat, with “short legs” that could support a greater amount of wheat grains on any stalk. The hybrid dwarf variety clearly yielded more than the conventional varieties of wheat of that time. While the Green Revolution heralded a veritable increase in yields with respect to cereals, and saved developing countries, especially India, from famine, it led to very intensified use of water and application of agro-chemicals causing soil degradation and groundwater depletion.
Interested readers can obtain examples of precise functional forms of the profit and payoff functions that satisfy these properties from the authors.
Following the World Bank Country Classification by Income https://datahelpdesk.worldbank.org/knowledgebase/articles/906519-world-bank-country-and-lending-groups
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We would like to thank the editor and the anonymous referees enormously for their useful comments and patience, which have greatly contributed to the improvement of this paper.
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Ramani, S.V., El-Aroui, MA. On application of the precautionary principle to ban GMVs: an evolutionary model of new seed technology integration. J Evol Econ 30, 1243–1266 (2020). https://doi.org/10.1007/s00191-020-00694-4
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DOI: https://doi.org/10.1007/s00191-020-00694-4
Keywords
- GMV seed
- Farmer heterogeneity
- Technology obsolescence
- Irreversibility
- Evolutionary model
- Precautionary principle
- Ecology