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Un état de coexistence du soja transgénique et conventionnel au Paraná, Brésil


  • Michel Fok

    () (SCA - Systèmes de cultures annuelles - CIRAD - Centre de Coopération Internationale en Recherche Agronomique pour le Développement)

  • Jean-Louis Le Guerroué

    () (Faculdade Planatina - UnB - Universidade de Brasilia [Brasília])

  • Pasquale Lubello

    () (CREDAL - CREDAL - Centre de recherche et de documentation de l'Amérique latine - UMR 7169 - Université Sorbonne Nouvelle - Paris 3 - CNRS - Centre National de la Recherche Scientifique)


In Brazil, soybean production has increased with an annual growth of 7.2% since 1996. The adoption of transgenic soybean, rendered tolerant to glyphosate herbicide, has contributed to this remarkable increase. After the presentation of soybean production in Brazil, this article introduces the results of a survey conducted to capture the use of transgenic soybean, during the 200708 campaign in Paraná, one of the main producing States. The survey indicates that producers may show no, partial or total adoption of glyphosate-tolerant varieties of transgenic soybean. The allocation of transgenic soybean to most weedy plots is one reason of the coexistence of transgenic and non-transgenic soybean within the same farm holding. The continuation of the observed coexistence depends particularly on the evolution of royalties on transgenic soybean, and on the measures to ensure the non-transgenic purity of conventional soybean seeds.

Suggested Citation

  • Michel Fok & Jean-Louis Le Guerroué & Pasquale Lubello, 2010. "Un état de coexistence du soja transgénique et conventionnel au Paraná, Brésil," Post-Print halshs-00540820, HAL.
  • Handle: RePEc:hal:journl:halshs-00540820
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    References listed on IDEAS

    1. Bhavani Shankar & Colin Thirtle, 2005. "Pesticide Productivity and Transgenic Cotton Technology: The South African Smallholder Case," Journal of Agricultural Economics, Wiley Blackwell, vol. 56(1), pages 97-116.
    2. Patricio Mendez del Villar & Carlos Magri Ferreira & Juliana Galvarros Bueno Lobo Ribeiro & Josema Xavier de Madeiros & Pasquale Lubello & Jean-Louis Le Guerroué & Michel Fok, 2007. "Private governance in royalty collection: Effectiveness and limitations in tracing GM soybean in Brazil," Post-Print halshs-00176585, HAL.
    3. S. Narayan, 2009. "India," Chapters,in: The Political Economy of Trade Reform in Emerging Markets, chapter 7 Edward Elgar Publishing.
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