Variations in productivity and wood properties of Amazonian tachi-branco trees planted at different spacings for bioenergy purposes

Abstract

spacings (6.0 m 2 and 7.5 m 2 ). Genetic variability of the T. vulgaris seed stand and/or high heritability of wood traits overcame the effect of different spacing on all morphological, physical, chemical and energetic properties of T. vulgaris wood. This species has moderate basic density when cultivated at spacings larger than 6 m 2 and net heating value above 7.95 MJ/kg, which is suitable for bioenergy purposes. The high variation in wood properties within tree spacing is strongly indicative of great potential for genetic breeding. The fast growth and the suitable moderate wood basic density confirm the outstanding potential of homogeneous plantations of T. vulgaris for providing wood for bioenergy.

Exploring the potential of the Tachigali vulgaris wood from an experimental planting for producing charcoal in the Eastern Amazonia

“…A signi cant effect of planting spacing (4.5, 6.0, 7.5, 9.0, 10.5, and 12.0 m 2 ) on wood density basic (0.443 to 0.529 g cm − 3 ) was reported in the literature [12]. T. vulgaris wood shows energetic quality characteristics like those of the Eucalyptus wood [7], corroborating its potential for domestic and industrial charcoal production in the Amazonia states. However, studies have shown that T. vulgaris trees in homogeneous plantations often fork, i.e., trees with two or more stems, related to environmental and genetic factors [13].…”

WOOD ANATOMICAL STRUCTURE AND DENSITY OF Tachigali aubl SPECIES OCCURRING IN THE SOUTHEASTERN PERUVIAN AMAZON FOREST

“…And regarding the physical properties of this method, there are studies mainly in Indonesia using small blocks of wood extracted with core borer, where the radial variation of the basic density (pith-bark) and even mechanical properties such as resistance was determined to compression parallel to grain in the same variation, using the Faractometer II equipment (ISHIGURI et al, 2012;MAKINO, et al, 2011;MATSUMOTO, et al, 2011). The information on the technological characterization of the woods of the genus Tachigali is still insipient, for this reason, the information was extracted from the Global wood density database with 13 species of Tachigali (ZANNE et al, 2009), Silva et al (2019) with 01 species (T. vulgaris) and the 03 Tachigali species studied; where the average basic density of the 17 species of the genus Tachigali is 0.57g/cm 3 and varies from 0.41 to 0.77 g/cm 3 , qualitatively classifying these species as a medium to very high basic density (supplementary document).…”

Anais do Congresso Plantações Florestais.

“…Lima, é uma leguminosa arbórea, nativa da região amazônica que apresenta características tecnológicas, ecológicas e silviculturais atrativas para plantios homogêneos visando fins energéticos (Farias et al, 2016). A espécie é adaptada às condições edafoclimáticas da região norte (Farias et al, 2016) e tem características adequadas do lenho para produção de energia e matéria-prima para processos termoquímicos (Silva et al, 2021). O seu poder calorífico superior está em torno de 4720 cal/g e sua densidade básica varia de 0,419 a 0,606 g/cm³ (Silva et al, 2021).…”

“…A espécie é adaptada às condições edafoclimáticas da região norte (Farias et al, 2016) e tem características adequadas do lenho para produção de energia e matéria-prima para processos termoquímicos (Silva et al, 2021). O seu poder calorífico superior está em torno de 4720 cal/g e sua densidade básica varia de 0,419 a 0,606 g/cm³ (Silva et al, 2021). No entanto, para sustentar a utilização do tachi em plantios homogêneos comerciais é preciso conhecer a influência de características silviculturais na produtividade da espécie.…”