SIMBAL: A structural-functional plant model to simulate C and N dynamics andshoot-root architecture of winter oilseed rape associated with legumes
2023
Perthame, Laurène | Rees, Frédéric | Cornilleau, Xavier | Richard-Molard, Céline | Pradal, Christophe | Jullien, Alexandra | AgroParisTech | Ecologie fonctionnelle et écotoxicologie des agroécosystèmes (ECOSYS) ; AgroParisTech-Université Paris-Saclay-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) | Amélioration génétique et adaptation des plantes méditerranéennes et tropicales (UMR AGAP) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro Montpellier ; Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Université de Montpellier (UM) | Département Systèmes Biologiques (Cirad-BIOS) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad) | Scientific Data Management (ZENITH) ; Centre Inria d'Université Côte d'Azur (CRISAM) ; Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-Laboratoire d'Informatique de Robotique et de Microélectronique de Montpellier (LIRMM) ; Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM) | Tsu-Wei Chen | Andreas Fricke | Katrin Kahlen | Susann Müller | Hartmut Stützel
International audience
Show more [+] Less [-]English. Species mixtures are of great interest to promote low-input agricultural practices whilemaintaining agricultural production. For example, winter oilseed rape sown with a frostsensitive legume reduces the use of nitrogen fertilizer and herbicide while maintaining yield atlevels equivalent to pure cropping (Lorin et al., 2016). A disadvantage of such mixtures is thatthe legume might compete with the cash crop for resources and reduce yield. To optimizemanagement of these mixtures, it is necessary to better understand the ecophysiologicalprocesses that drive the sharing of resources between plants (e.g. carbon and nitrogen).Mechanistic functional-structural modeling (FSM) is particularly suitable for such studies as itallows the analysis of the processes underlying plant-plant interactions and integrates boththe architectural growth processes of the plant and its functioning (e.g. acquisition/allocationof resources) (Louarn and Song, 2020). For example, the model Virtual Grassland (Louarn etal., 2014) simulates competition for C, N and water between several herbaceous and legumespecies. However, no FSM for mixtures of annual crops with frost sensitive legume thatconsiders the feedback of the carbon/nitrogen functioning in both shoots and roots has beendeveloped so far. Such a modeling approach is shown in this study, with the aim of fillingknowledge gaps on the role of carbon-nitrogen interactions in plastic responses of plants inmixtures, by taking the case study of winter oilseed rape sown with frost sensitive fababeanat vegetative stage.
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