Skip to Main content Skip to Navigation
Journal articles

Do changes in the azimuthal distribution of maize leaves over time affect canopy light absorption?

Abstract : In maize canopies, when modelling the architecture and light regime one usually assumes leaf azimuths are distributed uniformly. Once we had demonstrated azimuthal re-orientation of maize leaves during the vegetative phase, we tested the weight of this hypothesis on the light absorbed daily by the canopy. We thus modelled the three-dimensional (3D) geometry of maize canopies with various plant densities and at different developmental stages using plant digitizing under field conditions. We simulated radiative transfer using a volume-based approach within actual and hypothetical canopies, obtained by simply rearranging leaf azimuths. Simulations indicated that changes to horizontal heterogeneity have little effect on daily light absorption efficiency. It is concluded that changes in leaf azimuths do not have to be taken into account in crop-functioning models. (© Inra/Elsevier, Paris.)
Mots-clés : MODELE DE SIMULATION:
Document type :
Journal articles
Complete list of metadata

Cited literature [46 references]  Display  Hide  Download

https://hal.inrae.fr/hal-02688939
Contributor : Migration Prodinra Connect in order to contact the contributor
Submitted on : Monday, June 1, 2020 - 5:51:32 AM
Last modification on : Tuesday, September 7, 2021 - 3:37:07 PM
Long-term archiving on: : Thursday, September 24, 2020 - 9:49:47 PM

File

140332_20100107100332096_1.pdf
Publisher files allowed on an open archive

Identifiers

  • HAL Id : hal-02688939, version 1
  • PRODINRA : 140332

Collections

Citation

Jean-Louis Drouet, Bruno Moulia, Raymond Bonhomme. Do changes in the azimuthal distribution of maize leaves over time affect canopy light absorption?. Agronomie, EDP Sciences, 1999, 19 (3-4), pp.281-294. ⟨hal-02688939⟩

Share

Metrics

Record views

17

Files downloads

57