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Associer le colza avec des légumineuses pour contribuer à la réduction des intrants dans un système de cultures diversifié en Champagne

Authors: Rochepeau, Pierre; Tauvel, Paul;

Associer le colza avec des légumineuses pour contribuer à la réduction des intrants dans un système de cultures diversifié en Champagne

Abstract

Problème Traditionnellement, les rotations dans la région sont composées de 5 séquences de culture en 4 ans (blé tendre-orge de printemps-betterave-blé tendre-colza). Ce système est assez gourmand en azote et peut souffrir de fortes pressions adventices (comme les renouées et chénopodes, gaillet et vulpins) dont certaines sont résistantes et entraînent une forte dépendance aux herbicides. Le colza est bien adapté à cette région en raison des températures hivernales douces mais ces dernières années des ravageurs comme les larves d'altises et le charançon du bourgeon terminal sont devenus de plus en plus dommageables pour cette culture. Solution On considère qu'une rotation diversifiée de 10 ans qui incorpore des légumineuses (Figure 1) fournit des services environnementaux et permet la réduction d’intrants. Dans ce système, l'introduction d'un colza associé à des légumineuses telles que les lentilles et la féverole a permis de maintenir les rendements tout en réduisant les apports d'azote ainsi que l’IFT.

Keywords

Système de cultures, DiverIMPACTSPA, Évaluation, Cultures associées, Services écosystémiques

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This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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