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Academic literature on the topic 'Eucalyptus nitens'

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Published: 4 June 2021
Last updated: 21 February 2023

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Journal articles on the topic "Eucalyptus nitens"

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Xavier, Adelica Aparecida, Eugênio Von. Sanfuentes, Davi Theodoro Junghans, and Acelino Couto Alfenas. "Resitência de Eucalyptus globulus e Eucalyptus nitens à ferrugem (Puccinia psidii)." Revista Árvore 31, no. 4 (August 2007): 731–35. http://dx.doi.org/10.1590/s0100-67622007000400018.

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Avaliou-se a resistência das espécies de Eucalyptus globulus e Eucalyptus nitens inoculadas com um isolado uredinospórico monopustular de Puccinia psidii origininário de plantio de Eucalypstus grandis (UFV-2) em Itapetininga, SP. A avaliação foi realizada aos 12 dias após a inoculação, e quantificou-se a doença por meio de uma escala de notas com quatro classes de severidade da doença (S0, S1, S2 e S3). Em média, aproximadamente 60% das plantas de E. globulus e 50% de E. nitens foram resistentes a P. psidii. A variabilidade intra-específica nos materiais estudados indica ser possível a clonagem de genótipos resistentes para plantio comercial ou para uso em programas de melhoramento genético.
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Moncur, M. W., and O. Hasan. "Floral induction in Eucalyptus nitens." Tree Physiology 14, no. 11 (November 1, 1994): 1303–12. http://dx.doi.org/10.1093/treephys/14.11.1303.

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Carrillo, Isabel, Sofía Valenzuela, and Juan Pedro Elissetche. "Comparative evaluation of Eucalyptus globulus and E. nitens wood and fibre quality." IAWA Journal 38, no. 1 (February 13, 2017): 105–16. http://dx.doi.org/10.1163/22941932-20170160.

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An evaluation of 100 Eucalyptus globulus and 100 E. nitens trees (six years old) was made using the Pilodyn micro-drilling tool as an indicator of wood density. Thirty E. globulus and thirty E. nitens trees with high, medium and low density were selected and sampled with an increment borer at breast height for anatomical analysis using fibre tester equipment and the Resistograph device to generate detailed information about fibre biometry and anatomical wood properties of both species for hybrid development. Eucalyptus globulus trees had a basic wood density average of 478 kg/m3, while E. nitens had a density of 490 kg/m3. Both micro-drilling tools showed significant correlation coefficients with basic wood density. Correlation coefficients between basic wood density and Pilodyn values were negative, being -0.53 (p = 0.01) and -0.68 (p < 0.001) for E. globulus and E. nitens, respectively. For both species a positive correlation was observed between basic density and Resistograph mean amplitude; the correlation coefficient was 0.84 (p < 0.001) for E. globulus, and 0.85 (p < 0.001) for E. nitens. Eucalyptus nitens trees had a higher density and amplitude average and smaller Pilodyn values than E. globulus trees, while the latter had higher coarseness, fibre length and diameter at breast height than E. nitens trees. However, E. nitens showed larger differences between features of earlywood and latewood in a growth ring than E. globulus trees.
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Byrne, M., MI Marquezgarcia, T. Uren, DS Smith, and GF Moran. "Conservation and Genetic Diversity of Microsatellite loci in the Genus Eucalyptus." Australian Journal of Botany 44, no. 3 (1996): 331. http://dx.doi.org/10.1071/bt9960331.

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Four microsatellite loci have been characterised in Eucalyptus nitens Maiden and in six other eucalypt species. The dinucleotide repeats were identified by screening a Sau3AI genomic DNA library from E. nitens with (CA)n and (GA)n oligonucleotide probes and sequencing the positive clones. Genetic analysis of 20 unrelated individuals from five populations of E. nitens showed all loci to be highly polymorphic with an average of 9.5 alleles per locus and an average heterozygosity of 0.575. Analysis of four individuals from each of six species from three subgenera showed complete conservation of microsatellite loci between species within the same subgenus, Symphyomyrtus, and conservation of 50% of loci across species between the two main subgenera, Symphyomyrtus and Monocalyptus. None of the primers amplified microsatellite loci in Eucalyptus maculata from the subgenus Corymbia. All microsatellite loci that were detected were polymorphic. Highly polymorphic microsatellite loci that are conserved across species will be useful for mapping quantitative traits, fingerprinting breeding lines, and for within-population studies requiring fine-scale analysis of genetic variation.
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Cheng, Yingyao, Gregory Nolan, Damien Holloway, Jaskiran Kaur, Michael Lee, and Andrew Chan. "Flexural characteristics of Eucalyptus nitens timber with high moisture content." BioResources 16, no. 2 (March 2, 2021): 2921–36. http://dx.doi.org/10.15376/biores.16.2.2921-2936.

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The demand for timber resources in the building industry has been increasing. Plantation Eucalyptus nitens is of interest because of its sustainable supply and potential for structural applications. However, few design standards cover strength values of plantation eucalypt timber, especially flexural failure below and above the fibre saturation point, which is an important mechanism of failure in bending members used in the building industry. Static bending tests were undertaken using a universal testing machine to examine nonlinear bending behaviour of 130 fibre managed E. nitens small clear wood samples at low and high moisture contents (MC). The mean bending modulus of rupture (MOR) was 80.7 MPa for low MC and 59.0 MPa for high MC. The high MC samples exhibited larger displacements at low ultimate loads, while the low MC samples showed abrupt failures at relatively small displacements with high ultimate loads. The design characteristic values for low and high MC E. nitens were 68.5 MPa and 39.8 MPa, respectively. This research demonstrates that fibre managed E. nitens timber is a promising timber for structural applications, especially when exposed to water, as the MOR reduction of E. nitens timber above FSP is relatively lower than those of P. radiata, which is a traditional construction material.
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Hudson, Irene, Lawrie Wilson, and Kim Van Beveren. "Vessel and Fibre Property Variation in Eucalyptus Globulus and Eucalyptus Nitens: Some Preliminary Results." IAWA Journal 19, no. 2 (1998): 111–30. http://dx.doi.org/10.1163/22941932-90001514.

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Vessel areas and distributions in Eucalyptus globulus and E. nitens vary in a consistent, significant and predictable way from pith to bark and within annual rings. Trends in vessel areas and distributions can be quantified despite the presence of indistinct annual rings and false rings. There is evidence of a vessel free area in first earlywood in E. nitens in which fibre properties are predictably different. At 5% height the vessel free area in the 1991 and 1992 annual rings is 13% and 1O% respectively.
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Hingston, A. B., P. B. McQuillan, and B. M. Potts. "Pollinators in seed orchards of Eucalyptus nitens (Myrtaceae)." Australian Journal of Botany 52, no. 2 (2004): 209. http://dx.doi.org/10.1071/bt03015.

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Flowers of the commercially important tree Eucalyptus nitens (Deane & Maiden) Maiden were visited by a diverse array of insects, but not by birds, in Tasmanian seed orchards. Most species of insects that visited the flowers of E. nitens are likely to be effective pollinators because all common species of visitors carried many grains of Eucalyptus pollen, and the open floral structure facilitates frequent insect contact with stigmas. Seed production also suggested that a wide variety of insects were effective pollinators because flowers were consistently well pollinated, despite differences in flower-visitor communities among orchards and particular branches of flowers. The generalised entomophilous pollination system of E. nitens suggests that effective pollinators should occur in seed orchards of this tree throughout the world, provided that flowering occurs at a time of year conducive to insect activity. Although a wide variety of insects appear to be effective pollinators of E. nitens, introduced honeybees, Apis mellifera L., that are often deployed as pollinators in seed orchards were consistently not attracted to the flowers. The reliance on wild insects as pollinators suggests that seed production in E. nitens may benefit from reduced use of broad-spectrum insecticides in, and near, seed orchards.
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Ibarra, Luis, Gary Hodge, and Juan José Acosta. "Quantitative Genetics of a Hybrid Population of Eucalyptus nitens × Eucalyptus globulus: Estimation of Genetic Parameters and Implications for Breeding Strategies." Forests 14, no. 2 (February 13, 2023): 381. http://dx.doi.org/10.3390/f14020381.

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In Chile, interspecific hybrids between Eucalyptus nitens × Eucalyptus globulus (GloNi) were developed by Arauco Forestry to capture specific traits from each parental species: growth rate and cold resistance from E. nitens (NIT) and wood properties from E. globulus (GLO). Field tests of E. nitens × E. globulus were distributed in two geographic zones: Arauco (12 tests) and Valdivia (15 tests), where growth and wood properties measurements were recorded at different ages. The hybrid population is composed of clones from 28 full-sib families, being the result of crossing 12 E. nitens females and 8 E. globulus males. Progeny from each of these families were vegetatively propagated and tested on each growth zone, with a total of 1214 clones developed. The quantitative genetic parameter estimates reveal high genetic variation in hybrid volume gain and wood properties, which make possible large genetic gain in all traits analyzed. Additionally, E. nitens has a considerable impact on the volume gain of the hybrid, making it important to test more parents in future interspecific crosses in both hybrid zones. In contrast, E. globulus demonstrated zero impact in volume. In wood traits, E. globulus in Arauco zone demonstrates a large effect on the genetic variability of these traits; meanwhile, in the Valdivia zone, E. nitens and E. globulus parents contributed roughly similar amounts of genetic variation. The high General Hybridizing Ability (GHA) and General Combining Ability (GCA) relationship between hybrid progeny and pure species progeny performance indicates that parents could be selected for interspecific crosses based on pure species test results for volume and wood properties.
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Mauchline, N., T. Withers, and Q. Wang. "Host suitability of some eucalypts for development of the Eucalyptus leafroller (Strepsicrates macropetana)." New Zealand Plant Protection 54 (August 1, 2001): 67–70. http://dx.doi.org/10.30843/nzpp.2001.54.3728.

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Strepsicrates macropetana (Lepidoptera Tortricidae) is a pest occurring only on species of Eucalyptus Nochoice trials were carried out by inoculating eggs onto potted plants of E nitens E saligna E fastigata and E regnans held in a glasshouse A number of development parameters including pupal weight time to adult eclosion and survival from egg to adult were measured All hosts were suitable for complete development of larvae however mean survival to adult was highest on E fastigata (61) The shortest time to eclosion (40 days) occurred on E nitens There was no difference in pupal weight between host species Adult female fecundity was variable The results indicate that the species of Eucalyptus tested which were from subgenera containing economically important species all supported development of S macropetana
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Kumbula, Samuel, Paramu Mafongoya, Kabir Peerbhay, Romano Lottering, and Riyad Ismail. "Using Sentinel-2 Multispectral Images to Map the Occurrence of the Cossid Moth (Coryphodema tristis) in Eucalyptus Nitens Plantations of Mpumalanga, South Africa." Remote Sensing 11, no. 3 (January 31, 2019): 278. http://dx.doi.org/10.3390/rs11030278.

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Coryphodema tristis is a wood-boring insect, indigenous to South Africa, that has recently been identified as an emerging pest feeding on Eucalyptus nitens, resulting in extensive damage and economic loss. Eucalyptus plantations contributes over 9% to the total exported manufactured goods of South Africa which contributes significantly to the gross domestic product. Currently, the distribution extent of the Coryphodema tristis is unknown and estimated to infest Eucalyptus nitens compartments from less than 1% to nearly 80%, which is certainly a concern for the forestry sector related to the quantity and quality of yield produced. Therefore, the study sought to model the probability of occurrence of Coryphodema tristis on Eucalyptus nitens plantations in Mpumalanga, South Africa, using data from the Sentinel-2 multispectral instrument (MSI). Traditional field surveys were carried out through mass trapping in all compartments (n = 878) of Eucalyptus nitens plantations. Only 371 Eucalyptus nitens compartments were positively identified as infested and were used to generate the Coryphodema tristis presence data. Presence data and spectral features from the area were analysed using the Maxent algorithm. Model performance was evaluated using the receiver operating characteristics (ROC) curve showing the area under the curve (AUC) and True Skill Statistic (TSS) while the performance of predictors was analysed with the jack-knife. Validation of results were conducted using the test data. Using only the occurrence data and Sentinel-2 bands and derived vegetation indices, the Maxent model provided successful results, exhibiting an area under the curve (AUC) of 0.890. The Photosynthetic vigour ratio, Band 5 (Red edge 1), Band 4 (Red), Green NDVI hyper, Band 3 (Green) and Band 12 (SWIR 2) were identified as the most influential predictor variables. Results of this study suggest that remotely sensed derived vegetation indices from cost-effective platforms could play a crucial role in supporting forest pest management strategies and infestation control.
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Dissertations / Theses on the topic "Eucalyptus nitens"

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Moreira, Jorge Felipe Quintana. "Uso de antraquinona en cocción kraft de Eucalyptus globulus y Eucalyptus nitens." Universidade Federal de Viçosa, 2011. http://locus.ufv.br/handle/123456789/5926.

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Foi analisada, experimentalmente, o efeito da adição de antraquinona ao processo kraft convencional para produção de celulose de mistura de Eucalyptus globulus e Eucalyptus nitens. Foram analisados aumentos da velocidade da reação de deslignificação e estabilidade dos carboidratos, utilizando condições industriais de cozimento batch da Celulosa Arauco y Constitucion SA, Planta Arauco. Para alcançar kappa constante (15 e 17) foram modificados os tempos de cozimentos e foram utilizadas diferentes dosagens de antraquinona. Foram estabelecidas relações lineares entre a dosagem de antraquinona e o rendimento depurado, o teor de rejeitos, o alcali residual e o teor de sólidos no licor residual. Para a dosagem máxima de AQ utilizada (0,10%) foram obtidos, para ambos os níveis de kappa, aumentos de 1,95% e 1,32% nos rendimentos depurados, economias de 14,2% e 50,4% nas cargas de álcali e decréscimos nos tempos de cozimento de 13 e 11 minutos para kappa 15 e 17, respectivamente.
En la presente disertación se verificó de manera experimental el efecto de la adición de Antraquinona al proceso de cocción batch convencional para una mezcla industrial de Eucalyptus globulus E. nitens.; en lo que respecta a su capacidad de aumentar la velocidad de la reacción de deslignificación y proporcionar estabilidad a las hemicelulosas y celulosas de la fibra. Lo anterior se logró con experiencias de laboratorio fijando las condiciones de cocción de acuerdo a la operación de los digestores batch de Celulosa Arauco y Constitución S.A., Planta Arauco. Donde para obtener un kappa constante (15 y 17) se modificó el Factor H mediante el tiempo de cocción, en distintos niveles de carga de Antraquinona. Se pudo establecer una relación lineal entre la dosificación de Antraquinona y los parámetros estudiados: rendimiento clasificado, rechazos, álcali residual, tiempo de cocción y sólidos en el licor negro. Particularmente, para la máxima dosificación de AQ utilizada en este estudio (0,1% bms) se obtuvo para ambos niveles de Kappa respecto al blanco o testigo- un aumento de 1.95% y 1.32 de rendimiento clasificado, un ahorro de álcali de 14.2% y 50.4% y una disminución de tiempo de cocción de 13 min y 11 min para Kappa 15 y 17, respectivamente.
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Pozo, Peñaloza Edmundo. "Efecto de la fertilización sobre plantaciones de Eucalyptus globulus (Labill.) y Eucalyptus nitens (Maiden) de siete años de edad en la Comuna de Máfil, Provincia de Valdivia." Tesis, Universidad de Chile, 2005. http://www.repositorio.uchile.cl/handle/2250/105059.

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Patrício, Helena Sofia Maurício. "Caracterização anatómica da casca de Eucalyptus nitens (Deane & Maiden) e Eucalyptus rudis Endl. para identificação das espécies." Master's thesis, ISA, 2014. http://hdl.handle.net/10400.5/6800.

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Mestrado em Engenharia Florestal e dos Recursos Naturais - Instituto Superior de Agronomia
The bark of 5 trees of E. nitens with 4 and 10 years of age, and 5 trees of E. rudis with 4 years of age was analyzed. The qualitative characterization and the determination of the tissue proportions were made on histological thin sections and quantitative characterization on dissociated elements; the dimension of fibres, axial parenchyma and expanded cells was also determined. The species showed: reduced rhytidome, periderm composed by phellem with suberised and lignified cells and phelloderm; non-collapsed phloem with tangential layers with axial parenchyma alternating with sieve tube elements and fibre bundles; the collapsed phloem is characterized by the change of the parenchyma cells and sclereids. The length, width and wall thickness of fibers was in 4-year-old E. nitens 0.90 mm; 16.2 μm and 4.7 μm; in 10-year-old E. nitens 1.05 mm; 17.8 μm and 5.2 μm and E. rudis 0.84 mm; 21 μm and 6 μm respectively. The expanded axial parenchyma cells are the most abundant phloem tissue (38-48%) in both species; the percentage of fibers was higher in E. nitens (33%). The species differed in the type of periderm, in the arrangement of the expanded cells and in the occurrence of secretory cavities.
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Antunes, Fernanda Schablatura. "Avaliação da qualidade da madeira das espécies Acacia crassicarpa, Acacia mangium, Eucalyptus nitens, Eucalyptus globulus e Populus tremuloides." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/11/11150/tde-23062009-094257/.

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As madeiras utilizadas para produção de polpa celulósica podem ser divididas em dois grupos em função da fibra: folhosas (fibra curta) e coníferas (fibra longas), as espécies de folhosas são destinadas especialmente a papéis de escrita e impressão. As principais espécies de folhosas utilizadas para produção de polpa de fibra curta em outros países são o Eucalyptus globulus (Península Ibérica e Chile), Eucalyptus nitens (Chile), Populus tremuloides (Canadá), Acacia mangium, Acacia crassicarpa (Indonésia). Este projeto tem por objetivo: avaliar e comparar o desempenho de madeiras utilizadas mundialmente para produção de polpa celulósica de fibra curta considerando parâmetros de qualidade da madeira tais como composição química, densidade básica, características anatômicas da madeira; com objetivo de fornecer informações estratégicas para o setor nacional de celulose e papel, visando o conhecimento e posicionamento em competitividade destas madeiras no mercado mundial. Para a realização deste trabalho foram coletadas 5 árvores de cada espécie as quais foram utilizados cavacos cortados manualmente obtidos de discos; com relação à madeira foram determinadas densidade básica, composição química e dimensões de fibras. Os resultados foram analisados estatisticamente sendo comparadas as diferentes espécies referentes à qualidade da madeira.
Wood used for pulp production may be divided in two major groups regarding fiber function: hardwood (short fiber) and softwood (long fibers). Hardwood species are mainly designated to writing and printing papers. Hardwood principal species used for production of short fiber pulp in other countries are Eucalyptus globulus (Iberian Peninsula and Chile), Eucalyptus nitens (Chile), Populus tremuloides (Canada), Acacia mangium and Acacia crassicarpa (Indonesia). This study aimed to evaluate and compare the performance of the main woods used worldwide for short fiber pulp production regarding wood quality parameters such as chemical composition, basic density and wood anatomical properties, in order to provide strategic information for national pulp and paper industry, aiming the knowledge and competitiveness of these woods at worldwide market. To accomplish this study, 5 trees from each species were collected and wood chips were manually cut. In relation to the wood, basic density, chemical composition and fiber lengths were determined. The results were statistically analyzed and the different species were compared regarding wood quality.
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Degefu, Dawit Tesfaye. "Ecology and genetic diversity of Coryphodema tristis on Eucalyptus nitens in South Africa." Thesis, University of Pretoria, 2012. http://hdl.handle.net/2263/79225.

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Forests are complex ecosystems that provide a variety of valuable products, such as timber, fuel wood, fiber and non-wood forest products and they also contribute to socio economic development. Pest problems have a considerable influence on the health of planted and natural woodlands of this industry. Members of the family Cossidae are often of serious concern to forestry and horticulture due to their aggressive, often gregarious wood-boring behaviour. Some species of this family (e.g Coryphodema tristis and Chilecomadia valdiviana) is known to be highly polyphagous and members occupy diverse ecological zones. Coryphodema tristis and Chilecomadia valdiviana are examples of cossid species that have recently expanded their host range to include non-native species. Coryphodema tristis was first reported infesting the non-native plantation species, Eucalyptus nitens, in South Africa in 2004, and C. valdiviana was first recorded infesting the same species in Chile in 1992. These insects have been reported to cause substantial damage to E. nitens. Both species are associated with a number of native trees in their respective countries, as well as non-native fruit trees and ornamentals. Despite what appears to be extreme polyphagy in C. tristis, many trees, including many Eucalyptus species and even hybrids of E. nitens and E. grandis planted in the province of Mpumalanga, are apparently free of any cossid moth infestation. These novel host range expansions raise interesting questions regarding the factors that influence new host associations. This review examines Cossidae as pests in native and non-native forest systems. Possible factors contributing to success of Cossidae in forestry and control strategies employed to manage the group are discussed.
Thesis (PhD)--University of Pretoria, 2014.
Genetics
PhD
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Moscoso, Sergio Hernán Carreño. "Efecto del polisulfuros en la producción de pulpa Kraft de Pinus radiata y mezcla de Eucalyptus Globulus y Eucalyptus Nitens." Universidade Federal de Viçosa, 2011. http://locus.ufv.br/handle/123456789/5928.

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Este estudo visa determinar, através de laboratório convencionais cozimento kraft, os efeitos da adição de polissulfeto no desempenho da celulose, hemicelulose, matéria orgânica do licor negro e físico-mecânicas da polpa, e entregar recomendações para testes na Constituição planta industrial, que tem um processo RDH. Os resultados mostram aumento no desempenho em relação ao de referência, 3,2% e 8,5% em Pinus radiata e 1,3% e 3,4% em Eucalyptus (mistura de 70% e 30% Eucalyptus nitens Eucalyptus globulus), para adições diferentes de polissulfeto. Esse aumento no desempenho pode ser explicado pelo maior teor de hemicelulose, o que confirma a ação protetora do polissulfeto. Os benefícios da aplicação em plantas de Constituição estes resultados indicam que a adição de polissulfeto de 1,5% teria um lucro anual de 3,8 milhão dólares, no montante de 10.500 mil dólares por ano, com a adição 3% do polissulfeto, razão pela qual se recomenda continuar com um estágio de aplicação industrial dentro da planta, para confirmar o custo final do projeto.
Este estudio tiene por objeto determinar, a través de cocciones Kraft convencionales de laboratorio, los efectos de la adición de polisulfuro en el rendimiento de la pulpa, contenido de hemicelulosas, contenido orgánico del licor negro y propiedades físico-mecánicas de la pulpa; y entregar las recomendaciones para realizar pruebas a nivel industrial en Planta Constitución, la cual posee un proceso RDH. Los resultados muestran aumentos en el rendimiento, con respecto a la referencia, de 3.2 % y 8.5 % en Pinus radiata y de 1.3 % y 3.4 % en Eucalyptus (mezcla de 70 % Eucalyptus nitens y 30 % Eucalyptus globulus), para distintas adiciones de polisulfuro. Este aumento en el rendimiento se puede explicar por el mayor contenido de hemicelulosas, lo que confirma la acción protectora del polisulfuro. Los beneficios de la aplicación en Planta Constitución de estos resultados, indican que para la adición de 1.5 % de polisulfuro se tendría un beneficio anual del orden de US$ 3.800.000; el que ascendería a US$ 10.500.000 al año con la adición de 3 % de polisulfuro, razón por la cual se recomienda continuar con una etapa de aplicación industrial en esa planta, para confirmar la rentabilidad final del proyecto.
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Wilken, Febé Elizabeth. "Establishment of a compatible pathosystem between Eucalyptus nitens and Phytophthora cinnamomi to determine host transcriptional responses." Diss., University of Pretoria, 2013. http://hdl.handle.net/2263/79209.

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Candy, Steven Gregory. "Predictive models for integrated pest management of the leaf beetle Chrysophtharta bimaculata in Eucalyptus nitens plantations in Tasmania." Connect to this title online, 1999. http://eprints.utas.edu.au/archive/00000224/.

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Valente, Carlos Manuel Ferreira. "Biological control of Gonipterus platensis: current status and new possibilities." Doctoral thesis, ISA/UL, 2018. http://hdl.handle.net/10400.5/17514.

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Doutoramento em Engenharia Florestal e dos Recursos Naturais - Instituto Superior de Agronomia
The Australian weevil Gonipterus platensis (Marelli) (Coleoptera: Curculionidae), commonly known as the Eucalyptus snout-beetle, is one of the main pests of eucalypts. Because this is a non-native species, classical biological control with natural enemies from its region of origin should be a viable control strategy. The introduction of the Australian parasitoid Anaphes nitens (Girault) (Hymenoptera: Mymaridae) has been the main method to control the pest worldwide. However, this natural enemy is not completely effective in reducing G. platensis populations and does not avoid the occurrence of damage in several regions. Therefore, it is important to identify effective control alternatives for these areas. In this work, the economic impact of the pest and the benefit of biological control with A. nitens over the last 20 years were assessed, using Portugal as a case study. The results of the economic analysis showed that, without biological control, the losses caused by G. platensis would be at least four times higher than those occurring with partial control by A. nitens. Given the insufficient efficacy of A. nitens, the existence of other natural enemies in Australia that could be used in a classical biological control programme was evaluated. From a set of eight natural enemies identified in Tasmania, the egg parasitoid Anaphes inexpectatus Huber and Prinsloo (Hymenoptera: Mymaridae) was selected for further studies. Laboratory studies comparing the biology of A. inexpectatus and A. nitens at different temperatures, a competition study between these two species, and a risk analysis for the introduction of A. inexpectatus in the Iberian Peninsula were carried out. Overall results suggest that A. inexpectatus might complement parasitism by A. nitens under field conditions without non-target effects on native fauna
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Satchell, Stuart Dean. "Evaluating profitability of solid timber production from 15 year old pruned and thinned Eucalyptus nitens (Deane & Maiden) in Canterbury." Thesis, University of Canterbury. School of Forestry, 2015. http://hdl.handle.net/10092/10821.

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This case study investigated profitability of a small stand of fast-grown Eucalyptus nitens in Canterbury for sawn timber production. This stand was pruned and thinned and then harvested at 15 years old. An estimate of per-hectare log yields and diameters was made from the stand. Sample logs were sawn, dried and profiled, then products quantified. Log prices were estimated using the residual value method. Prices were summed for sawn products from each log, from which processing expenses and sawmill profit were deducted for an estimate of log value. In the absence of market prices for sawn E. nitens products empirical estimates of price were derived from market survey data. Predictive models were produced from estimated stand log yields along with predicted product revenues and processing costs from sample logs. These were used for estimating per-hectare log residual values from the case study stand trees. Financial returns to the grower were then calculated as discounted cash flows from the estimated log residual values per hectare, taking into account grower costs along with harvesting and transport costs. Best-practice processing methods were identified from the literature and applied as a productivity benchmark. Methods were developed with the view to standardising data across research efforts that seek to improve grade recoveries for E. nitens. A range of factors were investigated that potentially influenced E. nitens log residual value in this case study, including log diameter and log position. Outcomes included a reasonably favourable return on investment for the grower. However, this depended on a number of factors such as land price, distance from processor, product prices, grading methods, drying methods and level of sawmill profit. The application of contemporary best practice small-scale processing methods indicates that E. nitens has potential as a profitable plantation species for solid timber production.
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Books on the topic "Eucalyptus nitens"

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Pinilla Suárez, Juan Carlos. Informe Técnico 165: Eucalyptus nitens en Chile: primera monografía. INFOR, 2004. http://dx.doi.org/10.52904/20.500.12220/7741.

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Cabrera Perramón, Jorge, Francisco Halabi L., José Antonio Prado D., and Juan Carlos Valencia Baier. Informe Técnico 166: Eucalyptus nitens en Chile: Economía y mercado. INFOR, 2004. http://dx.doi.org/10.52904/20.500.12220/7742.

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Documento que describe las condiciones del mercado de los Eucalyptus spp. con el fin de inferir la posibilidad de acceso del Eucalyptus nitens. La segunda parte corresponde a un análisis de costo beneficio, lo que permite conocer la rentabilidad de las plantaciones.
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Valencia Baier, Juan Carlos. Guía técnica. Poda y raleo de plantaciones de Eucalyptus nitens. INFOR : CORFO, 2000. http://dx.doi.org/10.52904/20.500.12220/17187.

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La oportunidad, frecuencia, severidad y métodos de raleo y poda han demostrado ser cruciales en el resultado final, y su conocimiento y aplicación práctica representan desafíos ineludibles para quién desee producir rollizos gruesos de alto valor con esta especie forestal. Por ello, la presente guía de poda y raleo de Eucalyptus nitens ha sido elaborada por INFOR para transferir conocimientos prácticos de ambas actividades para apoyar a pequeños y medianos productores forestales de Chile que estén interesados en este tipo de manejo y deseen maximizar sus retornos.
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Informe Técnico 175: Eucalyptus nitens en Chile: desarrollando silvicultura de alto valor. INFOR, 2008. http://dx.doi.org/10.52904/20.500.12220/16428.

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Elgueta, Patricio, Gonzalo Hernández, Raul Campos, and Irma Arriagada. Durabilidad natural de la madera de Eucalyptus nitens (Deane & Maiden) Maiden). INFOR, 2021. http://dx.doi.org/10.52904/20.500.12220/31293.

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El presente estudio tiene como objetivo general determinar la durabilidad natural del duramen de Eucalipto nitens sometido a la acción de dos hongos xilófagos de pudrición blanca, evaluadas de acuerdo a las categorías establecidas por Findlay (1962) y la norma EN-350.
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Juacida Percaz, Luis Roberto. Informe Técnico 164: Eucalyptus nitens en Chile: procesos industriales de la madera. INFOR, 2004. http://dx.doi.org/10.52904/20.500.12220/7740.

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Documento que contiene el conjunto de resultados de ensayos sobre los procesos básicos de la elaboración de la madera, las propiedades y sus aplicaciones, para Eucalytus nitens de distintas edades. Las conclusiones ratifican que esta madera puede perfectamente aplicarse a productos de alto valor en condiciones tecnológicamente normales.
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Catalán L., Jorge, Luis Vásquez V., Gonzalo Hernández C., Raúl Campos P., and Pablo Mardones Díaz. Tensiones admisibles de la madera aserrada estructural de Eucalyptus nitens con clasificación visual. INFOR, 2021. http://dx.doi.org/10.52904/20.500.12220/30470.

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Con el objetivo de diversificar la matriz de abastecimiento de trozos de los aserraderos, en particular los pequeños y medianos, es necesario caracterizar tecnológicamente la madera proveniente de otras especies que se han adaptado de buena manera a las distintas condiciones de suelo y clima del país. Este trabajo recopila la metodología, resultados y conclusiones de un estudio tecnológico ejecutado con la madera aserrada de Eucalyptus nitens, con clasificación visual estructural, proveniente de la región de Los Ríos.
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Establecimiento de 2 huertos clonales de individuos de alta productividad para la producción de semillas mejorada de E. globulus y E. nitens a ser transferida a AFC (Informe 2.1: Huerto E. nitens). Producto 2. INFOR, 2009. http://dx.doi.org/10.52904/20.500.12220/17869.

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González González, Marlene Verónica, and Patricio Parra Sanhueza. Problemas fitosanitarios en eucalipto. Estudio bibliográfico. INFOR, 1998. http://dx.doi.org/10.52904/20.500.12220/943.

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En este trabajo se consideró el daño ocasionado por hongos, insectos, animales superiores, malezas, plantas parásitas y agentes abióticos, principalmente sobre cinco especies del género Eucalyptus que tienen gran importancia económica en Chile. Estas corresponden a Eucalyptus camaldulensis, Eucalyptus delegatensis, Eucalyptus globulus, Eucalyptus nitens y Eucalyptus viminalis. Obtenida la información proveniente de esta recopilación bibliográfica será posible aumentar los conocimientos sobre los agentes dañinos que actúan en las plantaciones de Eucalyptus a nivel mundial y que por lo tanto son de interés considerar para la toma de decisiones frente al establecimiento de nuevos cultivos extensivos y medidas correctivas en los ya instalados.
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Briones Vira, Rodrigo Andrés, Patricio Cendoya Hernández, Marcela P. Guzmán Fernández, Andre Klemarewski, and Luis Machuca S. Informe Técnico 172: LVL vigas de chapas laminadas confeccionadas con Pinus radiata y Eucalyptus nitens. INFOR : CORFO, 2007. http://dx.doi.org/10.52904/20.500.12220/17182.

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Compilación de los trabajos desarrollados,destacando los antecedentes internacionales del LVL, su caracterización ffsica y mecánica, un estudio de prefactibilidad de una planta Laminated Veneer Lumber en Chile y el comportamiento del producto frente a revestimientos y fuego.
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Book chapters on the topic "Eucalyptus nitens"

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Smethurst, P., C. Baillie, and M. Cherry. "Nutritional effects on leaf area index and growth of a young Eucalyptus nitens plantation." In Plant Nutrition, 928–29. Dordrecht: Springer Netherlands, 2001. http://dx.doi.org/10.1007/0-306-47624-x_452.

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Sharma, M., J. C. F. Walker, and Shakti S. Chauhan. "Eliminating Growth-Stresses in Eucalyptus: A Scoping Study with E. bosistoana and E. nitens." In Wood is Good, 47–54. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-3115-1_5.

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Conference papers on the topic "Eucalyptus nitens"

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Couceiro, José, Lars Hansson, Ahec Ambrož, and Dick Sandberg. "CT-scanning of the drying process of Eucalyptus nitens." In 21st International Drying Symposium. Valencia: Universitat Politècnica València, 2018. http://dx.doi.org/10.4995/ids2018.2018.7380.

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The drying of Eucalyptus nitens is a troublesome process as the species is extremely prone to drying defects. This paper reports ongoing research to improve the understanding of surface checking and cell collapse in Chilean grown Eucalyptus nitens during drying. Computed tomography (CT) scanning was used as a powerful tool for studying the internal changes in the wood-material during the drying process. Different levels of temperatures have been tested with the same equilibrium moisture content (EMC) conditions and low air velocity. The results confirm that a low drying temperature and a low air velocity, which results in a slow rate of drying, reduce internal cell collapse and surface checking . Keywords: Cell collapse; computed tomography; surface checks; wood drying; internal checks
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Brinkhoff, Rose, Mark Hovenden, and Mark Hunt. "Nitrogen fertiliser increases LAI but creates carbon and water costs in <em>Eucalyptus nitens</em>." In The 1st International Electronic Conference on Forests — Forests for a Better Future: Sustainability, Innovation, Interdisciplinarity. Basel, Switzerland: MDPI, 2020. http://dx.doi.org/10.3390/iecf2020-07979.

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Silva, Sebastián, and Marta Fernández. "IDENTIFICATION OF GENES ASSOCIATED TO COLD ACCLIMATION IN Eucalyptus nitens BY ANALYSIS OF GENE EXPRESSION in silico." In MOL2NET 2018, International Conference on Multidisciplinary Sciences, 4th edition. Basel, Switzerland: MDPI, 2018. http://dx.doi.org/10.3390/mol2net-04-05205.

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