Anti-termite activity from the lipophilic fractions of Eucalyptus pellita F. Muell heartwood

Eucalyptus pellita F. Muell. has become an important tree species in the forest plantations of SE Asia, and in Malaysian Borneo in particular, to replace thousands of hectares of Acacia mangium Willd. which has suffered significant loss caused by Ceratocystis manginecans infection in Sabah, Malaysia. Since its first introduction at a commercial scale in 2012, E. pellita has been planted in many areas in the region. The species replacement requires new silvicultural practices to induce the adaptability of E. pellita to grow in the region and this includes relevant research to optimise such regimes as planting distance, pruning, weeding practices and nutrition regimes. In this present study, the nutritional status of the foliage was investigated with the aim to develop near infrared spectroscopic calibrations that can be used to monitor and quantify nutrient status, particularly total foliar nitrogen (N) and phosphorus (P) in the field. Spectra acquired on fresh foliage in situ on the tree could be used to predict N and P with accuracy suitable for operational decision-making regards fertiliser application. If greater accuracy is required, spectra acquired on dry, milled foliage could be used to predict N and P within a relative error of 10% (R2c, r2CV, RMSEP, RPD = 0.77, 0.71, 0.02 g 100/g, 1.9 for foliar P and = 0.90, 0.88, 0.21 g 100/g, 3.0 for foliar N on dry, milled foliage). The ultimate application of this is in situ nutrient monitoring, particularly to aid longitudinal studies in fertiliser trial plots and forest operations, as the non-destructive nature of NIR spectroscopy would enable regular monitoring of individual leaves over time without the need to destructively sample them. This would aid the temporal and spatial analysis of field data.

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Fractionation and physico-chemical analysis of degraded lignins from the black liquor of Eucalyptus pellita KP-AQ pulping

Polymer Degradation and Stability ◽

10.1016/j.polymdegradstab.2009.03.019 ◽

2009 ◽

Vol 94 (7) ◽

pp. 1142-1150 ◽

Cited By ~ 91

Author(s):

Tong-Qi Yuan ◽

Jing He ◽

Feng Xu ◽

Run-Cang Sun

Keyword(s):

Chemical Analysis ◽

Black Liquor ◽

Eucalyptus Pellita ◽

Physico Chemical

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Resistance of Eucalyptus pellita to rust (Puccinia psidii)

Cropp Breeding and Applied Biotechnology ◽

10.1590/1984-70332014v14n4a38 ◽

2014 ◽

Vol 14 (4) ◽

pp. 244-250 ◽

Cited By ~ 9

Author(s):

Marisângela Rodrigues Santos ◽

Lúcio Mauro da Silva Guimarães ◽

Marcos Deon Vilela de Resende ◽

Leonardo Novaes Rosse ◽

Karina Carnielli Zamprogno ◽

...

Keyword(s):

Rust Resistance ◽

Minor Effect ◽

Primary Method ◽

Narrow Sense Heritability ◽

Puccinia Psidii ◽

Eucalyptus Pellita ◽

Eucalypt Plantations ◽

Race 1 ◽

Promising Source ◽

Resistant Genotypes

Eucalypts rust (Puccinia psidii) is currently one of the major diseases in commercial eucalypt plantations in Brazil. The primary method of disease control is the use of resistant genotypes, and, among the different species of Eucalyptus, E. pellita is indicated as a promising source of resistance. In this work, the genetic control of rust resistance in E. pellita through inoculations under controlled conditions of 441 plants from four full-sibling families was studied. Inoculations were performed using the monopostular isolate UFV-2, race 1. All families tested segregated for rust resistance, and the number of resistant plants was higher than susceptible in all crosses. Inheritance models based on few genes did not fully explain the observed segregation patterns, and the narrow-sense heritability of rust resistance was estimated between 32.7% and 37.3%. The results suggested that rust resistance in E. pellita is complex and is controlled by major- and minor-effect genes.

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Propriedades de chapas de flocos fabricadas com adesivo de uréia-formaldeído e de taninos da casca de Eucalyptus grandis W. Hill ex Maiden ou de Eucalyptus pellita F. Muell.

Revista Árvore ◽

10.1590/s0100-67622004000500011 ◽

2004 ◽

Vol 28 (5) ◽

pp. 715-724 ◽

Cited By ~ 9

Author(s):

Angélica de Cássia Oliveira Carneiro ◽

Benedito Rocha Vital ◽

Alexandre Santos Pimenta ◽

Ricardo Marius Della Lucia

Keyword(s):

Eucalyptus Grandis ◽

Pinus Elliottii ◽

Eucalyptus Pellita

Os taninos foram extraídos da casca de Eucalyptus grandis e Eucalyptus pellita, com água quente, à qual se adicionaram 4,5% de sulfito de sódio, durante três horas. As temperaturas da solução foram iguais a 70 e 100 ºC para Eucalyptus grandis e Eucalyptus pellita, respectivamente. Para a produção dos adesivos e com o intuito de reduzir a sua viscosidade, os taninos foram sulfitados com sulfito de sódio e ácido acético. Formulações adesivas foram preparadas adicionando-se 0, 25, 50, 75 ou 100% de adesivos tânicos ao adesivo comercial de uréia-formaldeído. Foram fabricadas chapas de flocos de Pinus elliottii Engelm. e Eucalyptus grandis, utilizando-se 8% da formulação adesiva. As propriedades das chapas foram determinadas segundo a norma ASTM D-1037, de 1993. Observou-se que as propriedades das chapas foram superiores ao mínimo estabelecido pela norma ANSI/A 280.1-93, exceto no caso da resistência à umidade. Verificou-se, ainda, que o emprego de uma formulação adesiva contendo resina à base de uréia-formaldeído e tanino-formaldeído pode melhorar algumas propriedades.

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CARACTERIZAÇÃO ENERGÉTICA DE DIFERENTES ESPÉCIES DE EUCALYPTUS

FLORESTA ◽

10.5380/rf.v47i1.48418 ◽

2017 ◽

Vol 47 (1) ◽

pp. 11 ◽

Cited By ~ 3

Author(s):

Márcia Silva Jesus ◽

Luciano Junqueira Costa ◽

Juliana Ceccato Ferreira ◽

Fabiana Paiva Freitas ◽

Larissa Carvalho Santos ◽

...

Keyword(s):

Eucalyptus Grandis ◽

Eucalyptus Urophylla ◽

Eucalyptus Pellita

Objetivou-se realizar a caracterização energética de espécies de eucalipto para a produção de carvão vegetal, comparativamente a um híbrido de Eucalyptus grandis x Eucalyptus urophylla. O experimento foi conduzido em delineamento inteiramente casualizado, com 3 repetições. As espécies utilizadas foram Eucalyptus grandis x Eucalyptus urophylla, Eucalyptus propinqua, Eucalyptus robusta, Eucalyptus pellita e Eucalyptus botryoides. Avaliou-se o poder calorífico, densidades básica e energética, o rendimento gravimétrico e a análise química imediata do carvão vegetal. Realizou-se a ANOVA, teste Tukey e correlação segundo Pearson, todos a 5,0% de probabilidade. O poder calorífico da madeira e os rendimentos da carbonização não se diferenciaram significativamente entre as espécies em estudo. O Eucalyptus robusta apresentou características energéticas semelhantes ao híbrido de Eucalyptus grandis x Eucalyptus urophylla, exceto pelas densidades, que naquele foram superiores. A densidade energética da madeira aumentou proporcionalmente à densidade básica, sendo que, a madeira mais densa apresentou maior quantidade de energia disponível. Conclui-se que a biomassa do Eucalyptus robusta possui potencial energético para ser utilizado como biorredutor.

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Adesivos à base de taninos das cascas de duas espécies de eucalipto para produção de chapas de flocos

Revista Árvore ◽

10.1590/s0100-67622004000400011 ◽

2004 ◽

Vol 28 (4) ◽

pp. 571-582 ◽

Cited By ~ 10

Author(s):

Benedito Rocha Vital ◽

Angélica de Cássia Oliveira Carneiro ◽

Alexandre Santos Pimenta ◽

Ricardo Marius Della Lucia

Keyword(s):

Eucalyptus Grandis ◽

Pinus Elliottii ◽

Eucalyptus Pellita ◽

Para Determinar

Os taninos foram extraídos das cascas de Eucalyptus grandisW. Hill ex Maiden e Eucalyptus pellita F. Muell. com água quente e a adição de 4,5% de sulfito de sódio, durante três horas, nas temperaturas de 70 e 100 ºC, respectivamente. Para a produção dos adesivos, os taninos reagiram com ácido acético e sulfito de sódio, para a redução da viscosidade. Técnicas de DSC (calorimetria diferencial exploratória) foram utilizadas para determinar os parâmetros cinéticos dos adesivos. Foram produzidas, em laboratório, chapas de flocos de Eucalyptus grandis e Pinus elliottii, utilizando-se 8 e 10% de adesivo de tanino sulfitado e 8% de adesivo comercial de uréia-formaldeído. As propriedades das chapas foram determinadas segundo a norma ASTM D-1037 de 1993. As propriedades das chapas fabricadas apenas com adesivo à base de taninos foram superiores ao mínimo exigido pela norma comercial ANSI/A 208.1-93, com exceção daquelas relacionadas com umidade. As chapas produzidas com adesivos de taninos da casca de Eucalyptus grandis foram superiores àquelas fabricadas com adesivos de taninos da casca de Eucalyptus pellita.

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Occurrence of Scolytinae in mangrove with impact trap and in wood of five forest species

Bioscience Journal ◽

10.14393/bj-v36n1a2020-47920 ◽

2020 ◽

Vol 36 (1) ◽

Author(s):

Charles Oliveira da Silva ◽

Henrique Trevisan ◽

Thiago Sampaio de Souza ◽

Acacio Geraldo de Carvalho

Keyword(s):

Forest Ecosystems ◽

Melia Azedarach ◽

Insect Infestation ◽

Forest Species ◽

Wood Degradation ◽

Eucalyptus Pellita ◽

Baited Traps ◽

Mangrove Environment ◽

Set Up ◽

Corymbia Citriodora

Scolytinae is a beetle group belonging to Order Coleoptera; these insects play an essential role in wood degradation in forest ecosystems, since they build galleries that enable substrate colonization by other saprophytic organisms, as well as nutrient cycling. Thus, the aim of the current study was to evaluate the occurrence of Scolytinae in the wood of 5 tree species exposed to mangrove environment, as well as to simultaneously survey Scolytinae specimens captured in ethanol-baited impact traps placed in the same environment. The study was carried out in a mangrove area located in Santa Cruz neighborhood - RJ. Five freshly-harvested Clitoria fairchildiana, Rhyzophora mangle, Corymbia citriodora, Melia azedarach and Eucalyptus pellita wood logs (1 m long and 5-10 cm diameter) were arranged perpendicular to the ground (1 m above it) and spaced 30 cm away from each other. Five impact traps were set up 50 m away from each other, 1.3 m above the ground. Insects were collected for 5 months. One hundred and thirty (130) Scolytinae individuals (14 species in 2 genera) were recorded in the wood logs; the relative frequency (Fr) of the species comprised Xyleborus affinis (33.9%) and Hypothenemus sp.4 (17.7%), which represented 51.6% of the total number of captured individuals. Hypothenemus sp.6 specimens were not collected in ethanol-baited traps, but the wood of C. fairchildiana. E. pellita did not show insect infestation. The traps captured 798 individuals (24 species belonging to 8 genera); the frequency of X. affinis (25.3%) and Hypothenemus eruditus (14.5%) represented 39.8% of the total number of captured insects.

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STUDI PENERAPAN METODE POHON CONTOH (TREE SAMPLING) DALAM PENDUGAAN POTENSI TEGAKAN HUTAN TANAMAN EKALIPTUS

Wahana Forestra Jurnal Kehutanan ◽

10.31849/forestra.v13i2.1567 ◽

2018 ◽

Vol 13 (2) ◽

pp. 41-52

Author(s):

Arland S ◽

Emy Sadjati ◽

Muhammad Ikhwan

Keyword(s):

Sampling Method ◽

Sampling Error ◽

Forest Products ◽

Data Retrieval ◽

Point Of View ◽

Industrial Plant ◽

Social Functions ◽

Eucalyptus Pellita ◽

Work Area ◽

Inventory Activity

Management and exploitation of forest products required for planning to be prepared for sustainable forest exploitation and also taking into account aspects of Sustainability. The so-called aspects are production capabilities, ecological functions and social functions. In order to achieve these matters, appropriate data are needed to present information on the potential for existing forest stands through forest inventory activities. In the inventory activity found some problems that occur in terms of cost, time, problems and human resources needed. Factors that will affect the data we get. These inhibiting factors can be overcome by creating three groups using methods that have been developed both in data retrieval techniques and data processing.The sampling method as a suitable and effective method in which the sampling method used in the inventory activity is a conventional method using a plot or a circle plot with the area and sampling determined according to the age class of the stand. In addition, using conventional methods is another method that also has accurate and precise information. Method of sampling trees. This study aims to the effectiveness and effectiveness of tree sampling methods and circular plot methods, making it easier to find an efficient and effective location in the work area of PT. Perawang Sukses Perkasa Petapahan District. The research was conducted in the plantation of industrial plant Ekaliptus (Eucalyptus pellita) located at PT. Perawang Sukses Perkasa Industri Petapahan District, Kampar District, Riau Province. This research was conducted for 2 months ie in May - June 2018. Based on the results of research conducted method of circular plot will be more effective and has a higher level of accuracy than other methods with a value of 2.9% sampling error. When viewed from a relative point of view, the relative average yield using the tree sampling method of 8 trees is more easily done in a circular manner with a relative value of 200.28% and accuracy is still accountable.

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