Data/hora: 05/06/2024 04:42:13

Biblioteca(s): | Embrapa Amazônia Oriental.
Data corrente: | 01/12/2023
Data da última atualização: | 01/12/2023
Autoria: | MORAES, L. G.; LIMA, M. D. R.; ASSIS-PEREIRA, G.; GONÇALVES, D. de A.; VIDAURRE, G. B.; BUFALINO, L.; GUEDES, F. T. P.; TOMAZELLO-FILHO, M.; PROTÁSIO, T. de P.
Afiliação: | LARISSA GONÇALVES MORAES, UNIVERSIDADE FEDERAL RURAL DA AMAZÔNIA; MICHAEL DOUGLAS ROQUE LIMA, UNIVERSIDADE FEDERAL RURAL DA AMAZÔNIA; GABRIEL ASSIS-PEREIRA, UNIVERSIDADE DE SÃO PAULO; DELMAN DE ALMEIDA GONCALVES, CPATU; GRAZIELA BAPTISTA VIDAURRE, UNIVERSIDADE FEDERAL DO ESPÍRITO SANTO; LINA BUFALINO, UNIVERSIDADE FEDERAL RURAL DA AMAZÔNIA; FERNANDA TRISLTZ PERASSOLO GUEDES, UNIVERSIDADE DE SÃO PAULO; MÁRIO TOMAZELLO-FILHO, UNIVERSIDADE DE SÃO PAULO; THIAGO DE PAULA PROTÁSIO, UNIVERSIDADE FEDERAL RURAL DA AMAZÔNIA.
Título: | Forking and planting spacing impacts on wood density, X‑ray density, and heartwood proportion of Tachigali vulgaris.
Ano de publicação: | 2023
Fonte/Imprenta: | Trees, v. 37, p. 1567-1581, 2023.
DOI: | https://doi.org/10.1007/s00468-023-02443-z
Idioma: | Inglês
Conteúdo: | Promising Amazonia species for forest energy crops require further investigation into how silviculture affects wood quality. This study sought to investigate how planting spacing and stem type (forked and non-forked) affect the basic wood density, X-ray density, and heartwood development of Tachigali vulgaris in a homogeneous plantation in Amazonia. The experiment was established with initial planting spacings of 3.0 × 1.5 m, 3.0 × 2.0 m, 3.0 × 2.5 m, 3.0 × 3.0 m, 3.0 × 3.5 m, and 3.0 × 4.0 m. 102-month-old trees were harvested for the work. Disks sampled along the stem height were tested for wood basic density and density measured by X-ray densitometry (air-dry density by growth ring) analyses. Disks obtained at the 1.3 m height were photographed and submitted to image manipulation for heartwood/sapwood analysis. The lowest average wood density was 0.512 g cm−3 in the 3.0 × 1.5 m spacing, and the highest was 0.538 g cm−3 in the 3.0 × 4.0 m spacing. Among non-forked trees, 66% had medium-density (≥ 0.500 g cm−3) and 34% low-density (< 0.500 g cm−3) wood. In contrast, forked trees had only 55% of trees with medium-density wood. The X-ray density profiles reduced from 0.713 to 0.582 g cm−3 in the increasing longitudinal direction and from 0.393 to 0.973 g cm−3 in the radial direction. Forking did not influence the heartwood proportion (60.03–61.54%). The 3.0 × 3.0 m spacing favored the wood quality concerning density class and variability, while the widest spacings improved heartwood formation. The forking increases the chances of low-density wood and its variations along the stem. Thus, future genetic studies should focus on this phenomenon to increase the productivity of Tachigali vulgaris energy forests.
Palavras-Chave: | Energy forests; Tachigali vulgaris.
Thesagro: | Floresta; Madeira; Silvicultura.
Thesaurus Nal: | Silviculture; Wood quality.
Categoria do assunto: | K Ciência Florestal e Produtos de Origem Vegetal
Registro original: | Embrapa Amazônia Oriental (CPATU)
Exemplares: | CPATU - (59158-1) - UPC - AP - DD -  -  -  - DIS