Analyse du fonctionnement d'une association de blé d'hiver (Triticum aestivum L.) et d'une plante de couverture sur une échelle annuelle par modélisation et expérimentation

Abstract : The introduction of a living cover crop during a cash crop growth cycle (relay intercropping) and its maintenance after the cash crop harvest may help to preserve biodiversity, increase soil organic matter content and carbon sequestration and provide other ecosystem services, such as increasing useful biotic interactions within the agroecosystem. We studied the impact of various approaches to managing a cover crop (red-fescue (Festuca rubra L.) or Lucerne (Medicago sativa L.)) intercropped with a winter wheat crop (Triticum aestivum L.) during an annual scale in terms of light, water and nitrogen competition, using both modeling and experimental approaches. Modelling and experimental results showing that the use of a leguminous as a cover crop in a wheat intercropping system can therefore improve environmental performances by favoring certain biotic processes such as the production of primary biomass, the interception of radiation, which might otherwise reach weeds, and nitrate leaching at the end of growth cycle. These positives effects where observed during intercropping period and especially after the harvest of wheat, when the cover crop is maintained alive. Whatever the experiment, soil tillage had a very little effect on these processes
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Agronomy. AgroParisTech, 2009. French. <NNT : 2009AGPT0082>


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Inès Shili-Touzi. Analyse du fonctionnement d'une association de blé d'hiver (Triticum aestivum L.) et d'une plante de couverture sur une échelle annuelle par modélisation et expérimentation. Agronomy. AgroParisTech, 2009. French. <NNT : 2009AGPT0082>. <pastel-00606113>

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