ECONOMIC EFFECTS OF CO-EXISTENCE MEASURES IN MAIZE CROP AND SEED PRODUCTION - A CASE STUDY OF FRANCE

The paper analyses the economic effects of specific co-existence measures (like e.g. increasing isolation distances between GM and non-GM plants, changing flowering time between varieties, non-GM buffer zones) in maize crop and seed production in selected regions in France. The results are based on simulations of agronomic measures and corresponding cost calculations for specific measures and landscape simulations. In maize grain production levels of adventitious presence below 0.9 % can be achieved without any co-operation between farmers in neighbouring clusters. In case fields are located in the same cluster, additional measures have to be taken with very differing cost effects depending on the specific characteristic of the measure. Additional measures should also be taken (either by the seed company or by the commercial GM grower) for ensuring co-existence between commercial GM fields and non-GM seed production clusters, while current practices would be sufficient for ensuring co-existence between GM and non-GM maize seed production plots for a threshold of 0.5 % adventitious presence.


Issue Date:
2005-11
Publication Type:
Conference Paper/ Presentation
DOI and Other Identifiers:
Record Identifier:
https://ageconsearch.umn.edu/record/91124
PURL Identifier:
http://purl.umn.edu/91124
Total Pages:
7
JEL Codes:
L51; O32
Note:
Paper prepared for presentation at the Second International Conference on Coexistence between Genetically Modified (GM) and non-GM based Agricultural Supply Chains (GMCC) Montpellier (France), 14th and 15th November 2005




 Record created 2017-04-01, last modified 2020-10-28

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