Doutorado em Ciências Florestais

URI Permanente para esta coleção

http://repositorio.ufes.br/handle/10/17466

Nível: Doutorado
Ano de início: 2013
Conceito atual na CAPES: 4
Ato normativo:Ofício N. 39-12/2007/CTC/CCA/CAPES de 31/07/2007
Periodicidade de seleção: Semestral
Área(s) de concentração:Ciências Florestais
Url do curso: https://cienciasflorestais.ufes.br/pt-br/pos-graduacao/PPGCFL/detalhes-do-curso?id=1425

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Navegando Doutorado em Ciências Florestais por Autor "Baraúna, Edy Eime Pereira"

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    Efeito dos tutores de madeira tratada com CCA-C na qualidade da pimenta-do-reino (Piper nigrum L.) cultivada no norte do estado do Espírito Santo
    (Universidade Federal do Espírito Santo, 2023-08-31) Rosa, Arlon Bastos da; Paes, Juarez Benigno; https://orcid.org/0000000347764246; http://lattes.cnpq.br/3454401627877927; https://orcid.org/0000000161335988; http://lattes.cnpq.br/0436776646557918; Alexandre, Rodrigo Sobreira; https://orcid.org/0000000252486773; http://lattes.cnpq.br/5340049196888351; Medeiros Neto, Pedro Nicó de; https://orcid.org/0000-0001-5647-0050; http://lattes.cnpq.br/6441001734932075; Baraúna, Edy Eime Pereira; https://orcid.org/0000-0001-5239-9592; http://lattes.cnpq.br/3160416445274012; Lopez, Yonny Martinez
    The objective of the research was to analyze the effects of using wooden stakes treated with chromated copper arsenate, type C (CCA-C) on the quality of black pepper (Piper nigrum L.) cultivated in the north of the State of Espírito Santo. To evaluate the concentration of copper, chromium and arsenic elements, components of CCA-C, samples were collected from underground roots, green and mature fruits of plants aged 5; 7 and 13 years, plus the control (5-year-old plants, untreated wooden tutor). For the quantification of the elements, the material was dried, crushed and digested in a 2N hydrochloric acid (HCl) solution, and submitted to chemical analysis in mass spectrometry with inductively coupled plasma (ICP-MS/MS), using helium (He), as a collision gas. The results indicated that copper was found in higher concentrations in plants, being more adsorbed by underground roots, with a decrease in green and ripe fruits. Chromium behaved similarly to copper, and arsenic did not show differences between the analyzed ages, being with a concentration lower than that allowed by the Resolution of the Collegiate Board - RDC 26, June 2nd, 2015, of the Brazilian Health Ministry. For plants aged 5 and 7 years (treated tutors) copper concentration was observed above the maximum allowed. However, copper concentrations in mature fruits from plants aged 13 years were within acceptable values. Thus, fruits of different ages and plant staking must be mixed and homogenized in order to obtain a good quality product that can be consumed without major consequences to human health.
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    Resistência natural da madeira de sete espécies de Eucalyptus a agentes xilófagos
    (Universidade Federal do Espírito Santo, 2017-02-17) Medeiros Neto, Pedro Nicó de; Oliveira, José Tarcísio da Silva; Paes, Juarez Benigno; Baraúna, Edy Eime Pereira; Martinéz López, Yonny; Gonçalves, Fabricio Gomes
    This study aimed to evaluate the natural wood resistance of seven Eucalyptus wood species in laboratory and field xylophagous tests and to correlate their durability with physical-chemical and anatomical characteristics. Two trees with 12 years old were randomly sampled by species and from each set of discs at 0, DBH, 25, 50, 75 and 100% of the commercial height, to determine anatomical characteristics and specific gravity. One log of 2.20m obtained from the first section of each tree were used to the chemical analysis and biological tests. For these tests, samples were taken in two positions in the radial direction of the trunk in the pith-bark direction (intermediate heartwood and transition region; containing heartwood and sapwood) and relationship were made among natural resistance and physical-chemical and anatomical characteristics. In the analysis and evaluation of the tests, the Scott - Knott test (p = 0.05) was used. The relationships among the variables studied were evaluated through simple linear regression. The Corymbia citriodora wood exhibited the largest specific gravity and Eucalyptus grandis the smaller. The E. camaldulensis wood had a higher extractive content and lower holocellulose content and C. citriodora wood had higher ash content. E. camaldulensis presented the lowest value of holocellulose. For the other species, holocellulose and lignin contents were close, and similar in the positions evaluated. In choice feeding tests, the E. robusta, E. grandis and E. uroplylla wood were the most consumed by termites, and C. citriodora wood was the least susceptible to attack by dry wood termite and no-choice feeding tests. The fungus Trametes versicolor degraded less the wood from the intermediate heartwood. To Postia placenta and Gloeophyllum trabeum fungi, in most species the intermediate heartwood was less resistant. The intermediate heartwood exhibiting minor color variation for all species attacked by Trametes versicolor and for the Postia placenta and Gloeophyllum trabeum the region transition was more vulnerable to color change. For the soil bed and field decay tests, the transition region exhibited the greatest mass losses. Regarding the relationships, the chemical characteristics were more relevant to the tests with termites, mainly to the dry wood termite. The anatomical variables were better correlated with the fungal attack on the wood. Overall, when evaluating the natural resistence indexes of woods to xylophagous fungal attack, the species with more durability were E. camaldulensis and C. citriodora and E. grandis the less resistent.