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Master Thesis

Typology of the uses and non uses of glyphosate in fields crops and mixed crops/stock farming in Pays de la Loire

Abstract : Glyphosate is a total systemic herbicide whose marketing authorization is currently being questioned if credible alternatives with no environmental impact and no major economic impact are identified. The uses and non-uses of glyphosate is the subject of this study, based on two sources of data; the cultural management tool Mes Parcelles and surveys of farmers. In Pays de la Loire, 18.67% of farmers in fields crops/ mixed crops sectors use glyphosate. In a sample representing 28.61% of the COP (cereals, protein oilseeds) surfaces, 10.64% of these surfaces received before sowing a glyphosate treatment, at an average dose of 2.22 l / ha (concentration of 360 g / l ). Doses between types of crops before sowing vary very little. According to farm surveys, the dose of glyphosate varies in trend between types of use (control of perennial weeds: average of 2.73l / ha, destruction of grasslands: average 2.12l / ha, destruction of plant cover and pre-plant cleanings: average of 1.47l / ha), however, variability is important between farms. The proportion of grassland in the UAA and the type of tillage are the two factors that have a significant effect on the% of UAA treated. The lower the tillage, the higher the% of treated surfaces. Although the cost of replacing glyphosate is the first obstacle cited by farmers, combining different agronomic levers can reduce the use of glyphosate.
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Master Thesis
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Submitted on : Wednesday, November 20, 2019 - 10:51:08 AM
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  • HAL Id : dumas-02371976, version 1



Mathilde Roignant. Typology of the uses and non uses of glyphosate in fields crops and mixed crops/stock farming in Pays de la Loire. Life Sciences [q-bio]. 2019. ⟨dumas-02371976⟩



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