Banca de DEFESA: RODOLPHO STEPHAN SANTOS BRAGA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : RODOLPHO STEPHAN SANTOS BRAGA
DATE: 28/02/2024
TIME: 14:00
LOCAL: Prédio das Graduações - Escola Agrícola de Jundiaí
TITLE:

NATURAL DURABILITY OF WOODS FROM Mimosa tenuiflora (Willd.) Poir. AND Mimosa caesalpiniaefolia Benth.

KEY WORDS:

biodeterioration, field tests, extractives, semi-arid

PAGES: 62
BIG AREA: Ciências Agrárias
AREA: Recursos Florestais e Engenharia Florestal
SUBÁREA: Tecnologia e Utilização de Produtos Florestais
SPECIALTY: Tratamento da Madeira
SUMMARY:

Knowledge of the characteristics and durability of the wood of each species is extremely important so that it can be better disposed of. To this end, this work aimed to determine the natural durability of timber species from the Caatinga Region, Mimosa tenuiflora (Willd.) Poir. (jurema-preta) and Mimosa caesalpiniaefolia Benth. (thrush), in a wood rot field test. The rotting field was implemented in a Forest Experimentation Area, located in the municipality of Macaíba-RN. In this, samples were introduced in two formats: stakes with dimensions of 5.0 x 2.5 x 50.0 centimeters (radial x tangential x longitudinal), and round pieces 1 meter long and with an average diameter between 10 and 15 centimeters. Both pieces were buried in the ground up to half their length, where a randomized block design was used. Annual assessments were carried out to determine the deterioration rate and the deterioration susceptibility index. In conjunction with the analyses, the condition of the bark of the samples, the hardness of the wood in the soil and in the aerial part and the presence of longitudinal cracks in the wood were evaluated in the field, in addition to the mass loss of the specimens and the extraction and quantification of tannins. The results of 3 years of evaluation of the test make it possible to understand that both wood species present good quality and durability in accordance with their natural properties, presenting varied results under different analyses. Furthermore, both showed similar resistance, just like treated eucalyptus. Therefore, it is still necessary to evaluate the species for a longer period in the rotting field.

COMMITTEE MEMBERS:
Presidente - 1079298 - ALEXANDRE SANTOS PIMENTA
Externa ao Programa - 1698809 - JULIANA LORENSI DO CANTO - nullExterno à Instituição - PEDRO NICÓ DE MEDEIROS NETO - UFCG
Interno - ***.881.764-** - RAFAEL RODOLFO DE MELO - UFERSA