Assessing pesticide pollution risk: From field to watershed

Houdart Marie, Tixier Philippe, Lassoudière André, Saudubray Frédéric. 2009. Assessing pesticide pollution risk: From field to watershed. Agronomy for Sustainable Development, 29 (2) : 321-327.

Résumé : Pesticides used for intensive agricultural production threaten the water resources of the French West Indies. For example, the pesticide chlordecone was used until the nineties in banana fields. Operational and simple tools are needed to assess the potential risk of pollution by pesticides. Here, we propose a method to assess the spatial variability of pollution risk on a watershed scale. This method proceeds in four steps: (1) surveying practices; (2) determining the pesticide load for each field in the watershed; (3) establishing an indicator of pollution contribution for each field based on the load of pesticide per year weighted by the toxicity and solubility of each molecule; and (4) spatializing the indicator. We applied this method to an agricultural watershed in the north of Martinique, French West Indies. The results showed detailed information of pesticide dose spread and the distribution of the pollution risk, highlighting risk areas. Specifically designed for the volcanic and tropical areas of the French West Indies, our method could be adapted by integrating other data on soil-climate conditions and the topography.

Mots-clés Agrovoc : pesticide, évaluation du risque, méthode, Musa, chlordécone, pratique culturale, pollution par l'agriculture

Mots-clés géographiques Agrovoc : Martinique, Antilles françaises, France

Classification Agris : H01 - Protection des végétaux - Considérations générales
P02 - Pollution
U30 - Méthodes de recherche

Champ stratégique Cirad : Axe 1 (2005-2013) - Intensification écologique

Auteurs et affiliations

• Houdart Marie, CEMAGREF (FRA)
• Tixier Philippe, CIRAD-PERSYST-UPR Systèmes bananes et ananas (MTQ) ORCID: 0000-0001-5147-9777
• Lassoudière André, CIRAD-PERSYST-UPR Systèmes bananes et ananas (FRA)
• Saudubray Frédéric, CEMAGREF (FRA)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/549468/)

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