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In the pursuit for a sustainable agricultural production respecting ecological, social and economic values, modern farmers are well aware of the importance of a correct and precise fertiliser application. Indeed, non-uniform spread patterns can cause extra pressure on the environment and might result in economic losses for the farmer. Because of the higher price of pneumatic fertiliser spreaders and the limited working width of pendulum spreaders, centrifugal spreaders are most commonly used in Europe. Although the centrifugal spreading mechanism is simple, the process is hard to control and can lead to a deviation between the desired and the actual fertiliser distribution in the field. This non-uniform application can have several causes: the behavior of the operator, the properties of the fertiliser, the settings of the machinery and external conditions like the unevenness of the field or the wind.Even though farmers realize the importance of a precise fertilising, most of them cannot adapt the settings of the spreader to improve the pattern uniformity.

Évaluation des technologies --- Technology assessment --- Distributeur d'engrais --- Fertilizer distributors --- Fertilisation --- Fertilizer application --- Matériel de fertilisation --- Fertilizer equipment --- Modèle de simulation --- Simulation models --- Academic collection --- Theses