02472naa a2200325 a 450000100080000000500110000800800410001902400520006010000190011224501540013126000090028552014740029465000170176865000160178565000250180165000170182665000120184365000140185565300270186970000180189670000230191470000280193770000170196570000210198270000220200370000250202570000240205070000240207477300480209821456832023-05-17       2023    bl uuuu     u00u1 u    #d7 ahttps://doi.org/10.1007/s11056-022-09932-y2DOI1 aLIMA, M. D. R.  aTachigali vulgaris energy forestsbunderstanding spacing, age, and stem type effects on tree growth patterns and wood density.h[electronic resource]  c2023  aReforestation with species of the Eucalyptus genus provides the main biomass source for energy purposes in Brazil. However, the country?s northern region lacks such crops to meet the demand of the second-largest national steel pole. The species is a promising source of biomass, as it is native to the region and grows at high rates. Thus, this research aimed to evaluate the effect of planting spacing (4.5, 6.0, 7.5, 9.0, 10.5, and 12 m2 per plant), tree age (87 and 102 months) and stem forking on dendrometric variables and wood basic density of T. vulgaris trees from a trial plantation located in Eastern Amazonia. The commercial volume, basic density, form factor, and dry wood mass of trees were determined. The forked trees had a higher volume (0.2492 m3) and dry wood mass (112.88 kg) than non-forked trees (average volume of 0.1573 m3 and 73.66 kg of dry wood mass). At 87 months, wood basic density was found higher in wide spacings (9 and 12 m2 plant1). At 87 months, the non-forked and forked trees presented basic densities of 0.505 and 0.474 g cm3, respectively. The forked trees at 102 months spaced by 9 m2 had a basic density&gt0.500 g cm3, a desirable parameter for charcoal production. Thus, this study confirmed the relevance of planting spacing, age, and stem type on the basic density of T. vulgaris, supporting future studies to define the best silvicultural practices and decision-making on the species by forest companies located in Amazonia.  aWood quality  aCrescimento  aDensidade de Plantio  aEspaçamento  aMadeira  aQualidade  aTriplaris surinamensis1 aMORAES, L. G.1 aSILVA, R. de C. C.1 aBARROS JUNIOR, U. de O.1 aBUFALINO, L.1 aSOARES, A. A. V.1 aASSIS-PEREIRA, G.1 aGONÇALVES, D. de A.1 aTOMAZELLO-FILHO, M.1 aPROTÁSIO, T. de P.  tNew Forestsgv. 54, n. 3, p. 491-513, 2023.