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<lom:string language="fre">&lt;p&gt;Le carburant représente 30 % du coût horaire d’un tracteur et soulève le problème de la « fragilité énergétique » de l'agriculture moderne entièrement dépendante de l'approvisionnement en pétrole. Avec la réduction programmée des ressources pétrolières, le développement d'une filière carburant spécifique pour les engins agricoles devient donc incontournable. Dans cet article, les auteurs nous présentent le potentiel et l'intérêt environnemental de quatre filières de production de biocarburants agricoles.&lt;/p&gt;</lom:string>
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