Skip to Main content Skip to Navigation
Journal articles

Modelisation des transferts gazeux dans le lit de semence : application au diagnostic des conditions d'hypoxie des semences de betterave sucriere (Beta vulgaris L.) pendant la germination. I. - Presentation du modele

Abstract : A model based on gas diffusion laws (Fick’s laws) in tilled layers of soil has been developed. It allows determination of the physical characteristics of seed beds and deeper layers which may inhibit the germination of sugar beet seed by a limitation of seed oxygen uptake. Within the profile, a possible crust, the seed bed and the ploughed layer have been distinguished. The gas transfer parameters (diffusion coefficient and transfer porosity) depend on the structural and water potential characteristics of each layer; their estimations are based on experimental relationships. Oxygen uptake by the seed is neglected. Soil microbial respiration depends on soil organic status and its variations with oxygen concentration and temperature have been taken into account. The model follows oxygen concentration in the seed bed and compares it with the oxygen concentrations, experimentally determined, which limit the germination of sugar beet seed.
Document type :
Journal articles
Complete list of metadata

Cited literature [32 references]  Display  Hide  Download

https://hal.inrae.fr/hal-02727960
Contributor : Migration Prodinra <>
Submitted on : Tuesday, June 2, 2020 - 3:30:13 AM
Last modification on : Tuesday, September 7, 2021 - 3:33:03 PM
Long-term archiving on: : Friday, September 25, 2020 - 5:47:38 PM

File

82789_20090723031333742_1.pdf
Publisher files allowed on an open archive

Identifiers

  • HAL Id : hal-02727960, version 1
  • PRODINRA : 82789

Collections

Citation

Guy Richard. Modelisation des transferts gazeux dans le lit de semence : application au diagnostic des conditions d'hypoxie des semences de betterave sucriere (Beta vulgaris L.) pendant la germination. I. - Presentation du modele. Agronomie, EDP Sciences, 1988, 8 (6), pp.539-547. ⟨hal-02727960⟩

Share

Metrics

Record views

18

Files downloads

15