"Transgenic treadmill": Responses to the emergence and spread of glyphosate-resistant johnsongrass in Argentina

Rosa Binimelis, Walter Pengue, Iliana Monterroso

    Research output: Contribution to journalArticleResearchpeer-review

    98 Citations (Scopus)

    Abstract

    The broad-spectrum herbicide glyphosate has become the largest-selling crop-protection product worldwide. The increased use of glyphosate is associated with the appearance of a growing number of tolerant or resistant weeds, with socio-environmental consequences apart from the loss of productivity. In 2002, a glyphosate-resistant biotype of johnsongrass (Sorghum halepense (L.)) appeared in Argentina and now covers at least 10,000 ha. This paper analyzes the driving forces behind the emergence and spread of this weed and also examines management responses and their implications. Preventive strategies against glyphosate-resistant johnsongrass fail because of the institutional setting. Reactive measures, however, transfer the risks to the society and the environment through the introduction of novel genetically modified crops that allow the use of yet more herbicide. This in turn reinforces the emergence of herbicide-resistant weeds, constituting a new phenomenon of intensification, the "transgenic treadmill". © 2009 Elsevier Ltd. All rights reserved.
    Original languageEnglish
    Pages (from-to)623-633
    JournalGeoforum
    Volume40
    Issue number4
    DOIs
    Publication statusPublished - 1 Jul 2009

    Keywords

    • Argentina
    • Economics of bioinvasions
    • Genetically modified soybean
    • Glyphosate-resistant weeds
    • Herbicide treadmill
    • Sorghum halepense
    • Transgenic treadmill

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