Interactions between the mechanical and hydraulic properties of eucalyptus trees under different environmental conditions of fertilization and water availability

Arnaud Charlène, Brancheriau Loïc, Sabatier Sylvie-Annabel, Heinz Christine, Chaix Gilles, Tomazello Filho Mario. 2019. Interactions between the mechanical and hydraulic properties of eucalyptus trees under different environmental conditions of fertilization and water availability. BioResources, 14 (3) : 7157-7168.

Url - éditeur : https://bioresources.cnr.ncsu.edu/resources/interactions-between-the-mechanical-and-hydraulic-properties-of-eucalyptus-trees-under-different-environmental-conditions-of-fertilization-and-water-availability/

Quartile : Q2, Sujet : MATERIALS SCIENCE, PAPER & WOOD

Résumé : Water and potassium are limiting factors for tree growth. Their influence on morphology and anatomy are well known, but their combined effects on tree growth remain to be clarified. A single clone of Eucalyptus grandis was analyzed under different treatments of rainfall exclusion and fertilization. Eight trees per treatment were sampled to investigate the influence of these treatments on the morphological, mechanical, and anatomical traits. The results showed that the fertilization mainly influenced the morphological and anatomical characteristics. Considering the difference between the fertilized and non-fertilized trees, the function of mechanical support was provided through increasing the diameter and the stiffness. Considering the fertilized trees, two different mechanisms occurred inducing a high stiffness: the wood density was higher for trees with rainfall exclusion; the specific modulus was higher for trees with a normal water supply.

Mots-clés Agrovoc : Eucalyptus grandis, croissance, propriété mécanique, stress dû à la sécheresse, engrais potassique

Mots-clés géographiques Agrovoc : Brésil

Classification Agris : F62 - Physiologie végétale - Croissance et développement
F04 - Fertilisation
K50 - Technologie des produits forestiers
F60 - Physiologie et biochimie végétale

Champ stratégique Cirad : CTS 2 (2019-) - Transitions agroécologiques

Auteurs et affiliations

• Arnaud Charlène, Université de Montpellier (FRA)
• Brancheriau Loïc, CIRAD-PERSYST-UPR BioWooEB (FRA) ORCID: 0000-0002-9580-7696 - auteur correspondant
• Sabatier Sylvie-Annabel, CIRAD-BIOS-UMR AMAP (FRA)
• Heinz Christine, Université de Montpellier (FRA)
• Chaix Gilles, CIRAD-BIOS-UMR AGAP (FRA) ORCID: 0000-0003-2015-0551
• Tomazello Filho Mario, ESALQ (BRA)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/593199/)

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