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A model to evaluate the consequences of GM and non-GM segregation scenarios on GM crop placement in the landscape and cross-pollination risk management

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  • Coléno, F.C.
  • Angevin, F.
  • Lécroart, B.

Abstract

Under European regulations, a product is labelled as GM (genetically modified) if more than 0.9% of one of its ingredients originates from GM material. During collection, crops from many fields are combined to fill a silo. To avoid the risk of mixing GM and non-GM harvests, it is possible to dedicate a silo to a given crop or to define specific times for GM and non-GM product delivery to silos. To evaluate these scenarios for the maize supply chain, we propose a combination of a model of farmers' varietal choice (based on profit evaluation at the field level, taking into account transport costs as well as price and cost differences between GM and non-GM products) and a spatially-explicit gene flow model. Consequences of different segregation strategies for collection zone organization can therefore be compared while using the percentage of GM grain in non-GM crops due to cross-pollination. The 'temporal' strategy leads to a uniform area of GM or non-GM maize, depending on the prices and the weather risks. The 'spatial' strategy leads to areas of either GM or non-GM crops surrounding the corresponding collection silo. GM presence in non-GM batches depends on the size of the non-GM zone and on the prevailing wind. We show how divergent commercial strategies of grain merchants could have consequences on GM presence in non-GM batches.

Suggested Citation

  • Coléno, F.C. & Angevin, F. & Lécroart, B., 2009. "A model to evaluate the consequences of GM and non-GM segregation scenarios on GM crop placement in the landscape and cross-pollination risk management," Agricultural Systems, Elsevier, vol. 101(1-2), pages 49-56, June.
    • Handle: RePEc:eee:agisys:v:101:y:2009:i:1-2:p:49-56
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    References listed on IDEAS

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    1. Les Levidow & Susan Carr & David Wield, 2000. "Genetically modified crops in the European Union: regulatory conflicts as precautionary opportunities," Journal of Risk Research, Taylor & Francis Journals, vol. 3(3), pages 189-208, July.
    2. Demont, Matty & Daems, Wim & Dillen, Koen & Mathijs, Erik & Sausse, Christophe & Tollens, Eric, 2008. "Regulating coexistence in Europe: Beware of the domino-effect!," Ecological Economics, Elsevier, vol. 64(4), pages 683-689, February.
    3. Bullock, D. S. & Desquilbet, M., 2002. "The economics of non-GMO segregation and identity preservation," Food Policy, Elsevier, vol. 27(1), pages 81-99, February.
    4. Volker Beckmann & Claudio Soregaroli & Justus Wesseler, 2006. "Coexistence Rules and Regulations in the European Union," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 88(5), pages 1193-1199.
    5. D.S. Bullock & Marion Desquilbet, 2002. "The economics of non-GMO segregation and identity preservation," Post-Print hal-02364321, HAL.
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    Cited by:

    1. Mourad Hannachi & Francois-Christophe Coleno, 2015. "The Virtues of the Vice of Cooperation between Rival Firms: A Simulation Model to Evaluate the Performance of Coopetition Strategy in the Grain Merchant Industry," Journal of Management and Strategy, Journal of Management and Strategy, Sciedu Press, vol. 6(1), pages 62-75, February.
    2. Mourad Hannachi & François Coléno, 2015. "The virtues of the vice of cooperation between rival firms : a simulation model to evaluate the performance of coopetition strategy in the grain merchant industry," Post-Print hal-01123186, HAL.
    3. François Coléno & Mourad Hannachi, 2015. "A Simulation model to evaluate the effect of cooperation between grain merchants in managing GM and non-GM segregation for maize," Post-Print hal-01198228, HAL.
    4. Hossard, Laure & Gosme, Marie & Souchère, Véronique & Jeuffroy, Marie-Hélène, 2015. "Linking cropping system mosaics to disease resistance durability," Ecological Modelling, Elsevier, vol. 307(C), pages 1-9.
    5. Gabriel Andreas & Menrad Klaus, 2014. "The Costs of GM and Non-GM Co-existence in Processed Food Systems – Demonstrated for the Cases of the German Supply Chains of Chocolate and Frozen Pizza," Journal of Agricultural & Food Industrial Organization, De Gruyter, vol. 12(1), pages 141-158, January.

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