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Using grassed strips to limite pesticide transfer to surface water: a review

Abstract : Grassed buffer strips are one way to reduce pesticide transfer by surface runoff from farmed fields to streams. Numerous experimental studies have demonstrated that this type of development is very effective in various conditions. The results are nevertheless very variable. This variability is partially explained by the multiplicity of processes and contributive factors and by the fact that the latter are dynamic in nature and site-specific. Several results also show that the intercepted products are not systematically immobilized within the strip but can move in the subsurface, thus affecting the overall effectiveness of the system. As a consequence of this complexity, the present guidelines for the sizing and siting of grassed strips are still only qualitative or are the result of empirical approaches. The present review analyses the available results and defines needs for further research. This concern several basic processes determining the pesticide interception by grassed strip and numerical models necessary to integrate the complexity of interacting processes and formulate reliable managing guidelines.
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Jean-Guillaume Lacas, Marc Voltz, Véronique Gouy, Nadia Carluer, J.J. Gril. Using grassed strips to limite pesticide transfer to surface water: a review. Agronomy for Sustainable Development, Springer Verlag/EDP Sciences/INRA, 2005, 25, pp.253-266. ⟨10.1051/agro:2005001⟩. ⟨hal-02587115⟩

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