Practical improvements in soil redox potential (Eh) measurement for characterisation of soil properties. Application for comparison of conventional and conservation agriculture cropping systems
Type de document
journalArticle
Langue source
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Titre
Practical improvements in soil redox potential (Eh) measurement for characterisation of soil properties. Application for comparison of conventional and conservation agriculture cropping systems
Titre français
Titre anglais
Auteur(s)
- HUSSON Olivier
- HUSSON Benoit
- BRUNET Alexandre
- BABRE Daniel
- ALARY Karine
- SARTHOU Jean-Pierre
- CHARPENTIER Hubert
- DURAND Michel
- BENADA Jaroslav
- HENRY Marc
Editeur(s)
Autre(s)
Id
3WF2DXGE
Version
3792
Date ajout
6 mai 2021 09:53
Date modification
6 mai 2021 09:53
Résumé
The soil redox potential (Eh) can provide essential information to characterise soil conditions. In practice, however, numerous problems may arise regarding: (i) Eh determination in soils, especially aerobic soils, e.g. variations in the instrumentation and methodology for Eh measurement, high spatial and temporal Eh variability in soils, irreversibility of the redox reaction at the surface electrode, chemical disequilibrium; and (ii) measurement interpretation. This study aimed at developing a standardised method for redox potential measurement in soils, in order to use Eh as a soil quality indicator. This paper presents practical improvements in soil Eh measurement, especially regarding the control of electromagnetic perturbations, electrode choice and preparation, soil sample preparation (drying procedure) and soil:water extraction rate. The repeatability and reproducibility of the measurement method developed are highlighted. The use of Eh corrected at pH7, pe+pH or rH2, which are equivalent notions, is proposed to facilitate interpretation of the results. The application of this Eh measurement method allows characterisation of soil conditions with sufficient repeatability, reproducibility and accuracy to demonstrate that conservation agriculture systems positively alter the protonic and electronic balance of soil as compared to conventional systems.
Note
None
CRAW tags
- AB - Utile à l'AB
- FREDO biologie et travail du sol
- GEO France
WEB tags
- accuracy
- indicator
- method
- redox potential
- repeatability
- reproducibility
Titre de la publication
Analytica Chimica Acta
Volume
906
Pages
98-109
Date caractères
February 4, 2016
Doi
10.1016/j.aca.2015.11.052
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Issn
0003-2670
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