Publications des agents du Cirad

Cirad

Consequences of soil attributes on the productivity and eucalypt drought response in two climate types in Brazil

Silva V.E., Buzetti S., Laclau J.P., Montanari R., Panosso A.R., Moreira Dias S.C., da Silva J.F.. 2020. Ciência Florestal, 30 (1) : p. 117-134.

DOI: 10.5902/1980509833020

The present study aimed to evaluate the correlations between productivity and eucalyptus drought (DR) response between soil attributes in two distinct climatic types in Brazil. For this, 24 experiments were installed in Brazil with four common clones in all the experiments to obtain strong edaphoclimatic contrasts, and, thus, to measure the productivity and the response to drought and to describe its relationship with the attributes of the soils. Two climatic groups were evaluated: Wet (precipitation rate: evapotranspiration between 1.0 to 2.5) and Sub-Humid (precipitation rate: evapotranspiration between 0.5 to 1.0). The attributes of the evaluated soils were: Sand, Silt, Clay, organic matter (O.M.), cation exchange capacity (CEC). For sites located in the wet climate class, CVWB correlated negatively with O.M. and clay, and positively with the sand. For DR, the correlations were observed for the Sub-Humid climate for the CEC and Sand variables, and for the Humid climate, no correlations were observed between the attributes of soils with DR.

Mots-clés : eucalyptus; propriété physicochimique du sol; résistance à la sécheresse; réponse de la plante; productivité agricole; fertilité du sol; climat humide; climat subhumide; caractéristiques du sol; brésil

Documents associés

Article (a-revue à facteur d'impact)

Agents Cirad, auteurs de cette publication :