English, Article edition: 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 Coléno, F.C.; Angevin, F.; Lécroart, B.

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Bookmark: http://trove.nla.gov.au/version/11395
Physical Description
  • article
Language
  • English

Edition details

Title
  • 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
Author
  • Coléno, F.C.
  • Angevin, F.
  • Lécroart, B.
Physical Description
  • article
Notes
  • 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.
  • GMO Co-existence Decision model Landscape Farming system
  • RePEc:eee:agisys:v:101:y:2009:i:1-2:p:49-56
Language
  • English
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