Banca de DEFESA: RAFAELA PATRICIA DA SILVA CERETTA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : RAFAELA PATRICIA DA SILVA CERETTA
DATE: 28/04/2021
TIME: 14:00
LOCAL: Sala virtual no google meet
TITLE:

INFLUENCE OF SPACING, RADIAL POSITION AND STEM TYPE ON THE ANATOMY OF WHITE TACHI (Tachigali vulgaris) WOOD IN EXPERIMENTAL PLANTATIONS IN AMAZON

KEY WORDS:

white tachi, fibers, vessels, anatomical variability, multiple stems.

PAGES: 79
BIG AREA: Ciências Agrárias
AREA: Recursos Florestais e Engenharia Florestal
SUBÁREA: Tecnologia e Utilização de Produtos Florestais
SPECIALTY: Anatomia e Identificação de Produtos Florestais
SUMMARY:

The species of Tachigali vulgaris L. G. Silva & H. C. (white tachi), is a pioneer, arboreal species, native to the Amazon region and has ecological, silvicultural and technological characteristics that allow the insertion of the species in plantations for energy purposes. In this sense, evaluating the anatomical aspects, as well as the influence of planting spacing, radial position and bifurcation of the bole, is important to determine the energetic potential of the species. The objective of this study was to understand how the initial planting spacing, the radial position and the type of stem affect the interspecific and intraspecific anatomical variations of the T. vulgaris wood. 8-year-old trees were collected from an experimental plantation, located in the District of Monte Dourado, state of Pará. The species were grown in different spacing (3 x 1.5 m, 3 x 2 m, 3 x 2.5 m , 3 x 3 m, 3 x 3.5 m and 3x4 m). In the wood, the basic density and macroscopic and microscopic analyzes were evaluated, qualitatively and quantitatively. The macroscopic analysis of the wood showed that the species has characteristics that corroborate with other species of the genus Tachigali. The pot elements did not show significant differences in the different planting spacing. However, in the marrow-shell sense, it was observed that the vessel frequencies decreased and the diameter and length increased with respect to age. The basic density of the wood and the fiber wall fraction had no effect on planting spacing. The bifurcation in the wood did not affect the composition of the cellular elements. However, in the multivariate analysis groups were formed consisting only of bifurcated trees and groups with single stem trees, showing the effect of the shape of the stem on the variables analyzed. The results show that the species has potential for bioenergetic purposes, especially thermo-chemical conversion processes. The species T. vulgaris showed anatomical characteristics similar to other species used commercially for energetic forest plantations.

BANKING MEMBERS:
Presidente - 1134991 - THIAGO DE PAULA PROTASIO
Externa ao Programa - 1201711 - SELMA LOPES GOULART
Externo à Instituição - GABRIEL DE ASSIS PEREIRA - ESALQ
Externo à Instituição - LUIZ EDUARDO DE LIMA MELO - UEPA