Évaluation de l'exposition des travailleurs de la nuciculture lors du traitement des noyers par le sulfate de cuivre

Phytosanitary treatments on walnut trees are known to lead to high exposure of operators, because of the techniques used but also because of the classical arch form in fruit tree growing (vegetation is like an arch above the tractor and can bring about some product fallout). The measurements we've made in spring 2010, during the fight against walnut tree bacteriosis, reveals a lower exposure than expected. The distance between operators and spraying systems, the air volume used and its speed, as well as a lower arch effect than expected at this time of the year could be determining factors.