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Chlordécone aux Antilles : évolution des systèmes de culture et leur incidence sur la dispersion de la pollution

Abstract : Chlordecone is an organochlorine insecticide and it was used to fight against the banana black weevil (Cosmopolites sordidus) from 1971 to 1993 in the French West Indies. Chlordecone is not a mobile molecule and is very slowly or almost not degradable in aerobic soils. Its persistence is a long term one and technical remediation is not operational at this time, but soils stay fertile, even if they remain the main pollution source. Thus we have to face and manage this pollution. This leads to changes among agrosystems, whether on crop choice or on practices to reduce sanitary impact. Chlordecone crop uptake varies according to the type of plant and organ: roots and tubers are highly contaminated whether fruits (banana, pineapple, tomato, citrus, etc.) are chlordecone free. A management tool is now available for farmers to choose crops according to the field pollution level and to reduce the consumers’ exposure risk. Reciprocally, cropping systems have an influence on pollution dispersion at the field and watershed scales. Chlordecone pollutes water resources and aquatic organisms through leaching water from polluted fields. This article present the existing situation and sums up the knowledge available based on results from past and in progress projects on cropping systems management and transfer processes to the environment, as well as on their impacts on aquatic ecosystems.
Mots-clés : pollution chronique
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  • HAL Id : hal-02651807, version 1
  • PRODINRA : 194343

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Magalie Lesueur-Jannoyer, Philippe Cattan, Dominique Monti, Carine Saison, Marc Voltz, et al.. Chlordécone aux Antilles : évolution des systèmes de culture et leur incidence sur la dispersion de la pollution. Agronomie, Environnement & Sociétés, Association Française d'Agronomie (Afa), 2012, 2 (1), pp.45-58. ⟨hal-02651807⟩

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