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Master Thesis

Adaptation méthodologique de l'ACV aux associations céréale-légumineuse en relais : exemple de la luzerne semée sous couvert de blé tendre d'hiver en Rhône-Alpes

Abstract : The reintegration of cereal-legume intercrops into the cereal cropping system of temperate areas may appear as one solution allowing to combine high productivity and ecological benefits. The lack of organisation of the all chain and of the environmental benefits knowledge is a brake on their development. The aim of the study is to adapt the Life Cycle Analysis (LCA) to cereal-legume relay intercrops (IR) properties into assessing the environmental impacts of relay crops (RC) in comparison to those of the corresponding sole crops (SC). The proposed methodology seizes the IR’s advantages and interactions which could allow to reduce the IR environmental impact compared to the SC. Two comparison methods were tested: the first one at crop scale and the second at cereal-legume’s succession scale (as SC or RC). Whatever the comparison scale, IRs always showed a lower environmental impact than SCs on average. At crop scale the impact’s reduction was about -10% varying between +9% and -58% depending on the impact category, the crop and the functional unit. Those reductions are more substantial with the succession scale, around -50%. Moreover RCs always exhibited lower impacts than SCs with the lowest reduction equals to -42% and the highest to -78%. Those results are promising regarding IRs however they need to be strengthen by studies with others climate and soil situations and with different crop scenarios.
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Master Thesis
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https://dumas.ccsd.cnrs.fr/dumas-01083812
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Submitted on : Tuesday, November 18, 2014 - 10:00:33 AM
Last modification on : Friday, October 23, 2020 - 4:49:42 PM
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Clara Khamvongsa. Adaptation méthodologique de l'ACV aux associations céréale-légumineuse en relais : exemple de la luzerne semée sous couvert de blé tendre d'hiver en Rhône-Alpes. Sciences agricoles. 2014. ⟨dumas-01083812⟩

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