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

Silva Vinicius Evangelista, Buzetti Salatier, Laclau Jean-Paul, Montanari Rafael, Panosso Alan Rodrigo, Moreira Dias Sharlles Christian, da Silva João Flávio. 2020. Consequences of soil attributes on the productivity and eucalypt drought response in two climate types in Brazil. Ciência Florestal, 30 (1) : 117-134.

https://doi.org/10.5902/1980509833020

Article de revue ; Article de recherche ; Article de revue à facteur d'impact Revue en libre accès total

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Titre portugais : Consequências dos atributos dos solos na produtividade e reposta à seca do eucalipto em dois tipos de clima no Brasil

Quartile : Q4, Sujet : FORESTRY

Résumé : 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.

Résumé (autre langue) : O objetivo do presente trabalho foi avaliar as correlações entre produtividade e resposta à seca (RS) do eucalipto entre os atributos do solo em dois tipos climáticos distintos no Brasil. Para isto, foram instalados 24 experimentos no Brasil com 4 clones comuns em todos os experimentos para obter fortes contrastes edafoclimáticos, e, desse modo, mensurar a produtividade e a reposta à seca e descrever as suas relações com os atributos de solos. Foram avaliados dois grupos climáticos: Úmido (relação precipitação: evapotranspiração entre 1,0 a 2,5) e Subúmido (relação precipitação: evapotranspiração entre 0,5 a 1,0). Os atributos dos solos avaliados foram: Areia, Silte, Argila, matéria orgânica (M.O.), capacidade de troca catiônica (CTC). Para os sítios localizados na classe climática Úmida, o VCCC correlacionouse negativamente com a M.O. e argila, e positivamente com a Areia. Para a RS, as correlações foram observadas para clima Subúmido para as variáveis CTC e Areia, e para o clima Úmido, não foram observadas correlações entre os atributos de solos com a RS.

Mots-clés Agrovoc : 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

Mots-clés géographiques Agrovoc : Brésil

Mots-clés libres : Eucalyptus, Soil properties, Water deficit, Plantation, Forest

Classification Agris : F60 - Physiologie et biochimie végétale
P35 - Fertilité du sol

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

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