Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Contrasting Weather and Stocking Effects on Eucalyptus Initial Coppice Response in Brazil

Pietro Gragnolati Fernandes
* ORCID logo ,
Clayton Alcarde Alvares
,
Túlio Barroso Queiroz
ORCID logo ,
Pedro Vitor Pimenta
,
Jarbas Silva Borges
,
James Stahl
,
Flavio Teixeira Mendes
,
Amanda Souza
,
Gustavo Matheus Silva
,
Gualter Guenther Costa da Silva
,
Sara Bezerra Bandeira Milhomem
,
Rosilvam Ramos de Sousa
,
Rodrigo Eiji Hakamada
Version 1 : Received: 18 September 2024 / Approved: 19 September 2024 / Online: 19 September 2024 (10:43:28 CEST)

How to cite: Fernandes, P. G.; Alvares, C. A.; Queiroz, T. B.; Pimenta, P. V.; Borges, J. S.; Stahl, J.; Mendes, F. T.; Souza, A.; Silva, G. M.; da Silva, G. G. C.; Milhomem, S. B. B.; de Sousa, R. R.; Hakamada, R. E. Contrasting Weather and Stocking Effects on Eucalyptus Initial Coppice Response in Brazil. Preprints 2024, 2024091492. https://doi.org/10.20944/preprints202409.1492.v1 Fernandes, P. G.; Alvares, C. A.; Queiroz, T. B.; Pimenta, P. V.; Borges, J. S.; Stahl, J.; Mendes, F. T.; Souza, A.; Silva, G. M.; da Silva, G. G. C.; Milhomem, S. B. B.; de Sousa, R. R.; Hakamada, R. E. Contrasting Weather and Stocking Effects on Eucalyptus Initial Coppice Response in Brazil. Preprints 2024, 2024091492. https://doi.org/10.20944/preprints202409.1492.v1

Abstract

In Eucalyptus plantations, coppice rotations often yield less than initial rotations. The TECHS project (Tolerance of Eucalyptus Clones to Hydric, Thermal and Biotic Stresses) studied short rotation coppicing across a 3,000 km gradient. The main objective of this work was to compare the survival, sprouting and initial growth of Eucalyptus clones managed, and to examine factors that might influence the productivity of the coppice rotation: climate, genotypes and stocking. Eight of the TECHS sites spread from latitudes 6o S to 30o S were included in the coppice study, with 17 genotypes at each site. The initial rotation had been planted at a 3 x 3 m spacing, and also in a spacing trial at densities from 450 to 14,000 trees ha-1. Six months after harvesting the initial Eucalyptus rotation, average survival was 88%, with tropical clones showing over twice the sprouting biomass (6.7 vs 2.9 Mg ha-1) and four times the woody biomass compared to subtropical clones (4.7 vs 1.1 Mg ha-1). Greater initial water deficits had stronger sprouting and growth. Clones with higher belowground carbon allocation in the initial rotation performed better in coppicing, and precipitation became more influential after 12 months. Drought and spacing trial significantly affected growth.

Keywords

silviculture; initial growth; productivity; climate gradient

Subject

Biology and Life Sciences, Forestry

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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