Pollution durable des sols par la chlordécone aux Antilles : comment la gérer ? - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Access content directly
Conference Papers Year : 2011

Long term pollution of soils in French West Indies: how to manage chlordecone contamination?

Pollution durable des sols par la chlordécone aux Antilles : comment la gérer ?

Abstract

Chlordecone, an organochlorine insecticide, has been used in banana fields before 1993. Nowadays, it is still polluting water resources, food and aquatic biota. Agronomic research has been working very early to answer to how to manage this environmental and sanitary crisis: where are the polluted soils? Is the pollution a long term pollution? The molecule is not mobile. Risk maps, based on the past banana fields, resulted in the diffuse pollution of 1/5th of cultivated area in Guadeloupe and 2/5th in Martinique. Soils with a high content of organic matter are fixing chlordecone molecule. It has not been observed degradation in aerated soil conditions, thus natural soil leaching is the only way to decrease soil pollution which is highly persistent, from one to several centuries according to soil type. Efficient depollution is not operational at the moment. Thus, pollution has to be managed. To reduce population exposure and food contamination, producers need sustainable cropping systems because polluted soil stays productive and fertile. A decision tool is now available, it takes in account the soil pollution level of the field and potential crop contamination: some crops are highly contaminated (roots and tubers), others are chlordecone free (fruits, banana, pineapple, tomato).
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Dates and versions

hal-02750073 , version 1 (17-02-2022)

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Attribution - NonCommercial - NoDerivatives

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  • HAL Id : hal-02750073 , version 1
  • PRODINRA : 168643

Cite

Yves-Marie Cabidoche, Magalie Lesueur-Jannoyer. Pollution durable des sols par la chlordécone aux Antilles : comment la gérer ?. CIAG 2011 Carrefours de l’innovation agronomique, INRA, Nov 2011, Lamentin, Guadeloupe, France. 220 p. ⟨hal-02750073⟩
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