Influence of Cupressus lusitanica Mill. Cones and Seed Characterization on Germination in Kenya

En los procesos de transformación y aserrío de la madera se generan residuos que pueden usarse como fuentes de materia prima para la producción de pellets. El objetivo de este trabajo fue evaluar la eficiencia, la calidad por imágenes de rayos X y las propiedades energéticas, físicas y mecánicas de pellets fabricados con residuos obtenidos del procesamiento de trozas de Cupressus lusitanica y Tectona grandis. Los resultados indicaron un porcentaje de eficiencia bajo para ambas especies forestales, con 25% para C. lusitanica y 20% para T. grandis. En la evaluación de calidad, los pellets de C. lusitanica se caracterizaron por poseer zonas de mayor claridad y pocas fisuras de corto tamaño en su superficie, mientras que en los de T. grandis se presenta un mayor número de zonas de mayor claridad, además de mostrar fisuras de mayor profundidad y largo. En relación con las propiedades evaluadas, se encontró que los pellets de T. grandis tienen una menor densidad aparente, menor PC, menor resistencia a la compresión y menor uniformidad en la densidad de su superficie y un porcentaje de cenizas, CH y durabilidad mecánica mayor, al compararlos con los de C. lusitanica.

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Determinación de los extractivos y su correlación con el peso específico básico de diez especies utilizadas como sombra en cafetales de Costa Rica

Revista Forestal Mesoamericana Kurú ◽

10.18845/rfmk.v11i27.1776 ◽

2014 ◽

Vol 11 (27) ◽

pp. 34

Author(s):

Róger Bonilla-Chaves ◽

Róger Moya-Roque

Keyword(s):

Costa Rica ◽

Pinus Caribaea ◽

Eucalyptus Saligna ◽

Cupressus Lusitanica

En América Central, los cafetales cuentan con árboles frutales y maderables con el fin de diversificar el cultivo y la producción. No obstante, éstas especies poseen poca información de las propiedades que determinan su potencial de uso. El objetivo del presente estudio es cuantificar el porcentaje de extractivos solubles en diferentes solventes, hidróxido de sodio, diclorometano,etanol-tolueno, agua caliente, agua fría. Se determinó la correlación entre los extractivos solubles con el peso específico de la albura y el duramen de 10 especies utilizadas como sombra en cafetales de Costa Rica. Se tomaron dos árboles de cada una de las especies de árboles de sombra en plantaciones de café y se extrajo material de la madera a 1,3 metros de altura. La madera fue molida y determinó la cantidad de extraíbles con los diferentes solventes, según las normas de la Asociación de estándares y materiales de América (ASTM). En el análisis químico, los porcentajes de extraíbles encontrados variaron de acuerdo al solvente utilizado; en hidróxido de sodio de 8,5 a 23,21%, en diclorometano de 1,71% a 8,57%, en etanol-tolueno de 0,15% a 8,79%, en agua caliente de 0,99 a 7,01% y en agua fría de 1,07% a 7,98%. En la especie Croton niveus el porcentaje de extractivos fue mayor en la albura, en comparación con el duramen. En<em> Cupressus lusitanica, Eucalyptus deglupta, Eucalyptus saligna, Pinus caribaea </em>y T<em>richilia havanensis</em> el duramen presentó mayor porcentaje de extractivos. En el resto de especies, no se presentaron diferencias entre los dos tipos de madera. En forma general se observó que las 10 especies presentan extractivos en la madera entre 1y 10%. En cuanto a la relación de los extractivos con el peso específico básico se determinó que un aumento del peso específico de la especies incrementa el contenido de extraíbles en agua fría en la albura y los extractos en agua caliente en el duramen, pero disminuye los extraíbles en diclorometano en el duramen.

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Elicitor of the β-Thujaplicin Accumulation in Callus Cultures of Cupressus lusitanica.

Journal of the Faculty of Agriculture, Kyushu University ◽

10.5109/24044 ◽

1993 ◽

Vol 38 (1/2) ◽

pp. 119-126

Author(s):

Satoko Inada ◽

Yuji Tsutsumi ◽

Kokki Sakai

Keyword(s):

Callus Cultures ◽

Cupressus Lusitanica

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Incidence of Pests and Diseases in Tree Nurseries and Plantations in Kimondi Forest, Nandi County, Kenya

East African Journal of Forestry and Agroforestry ◽

10.37284/eajfa.3.1.287 ◽

2021 ◽

Vol 3 (1) ◽

pp. 18-28

Author(s):

Joseph Atanga Ondieki ◽

Peter Sirmah ◽

Joseph Hitimana

Keyword(s):

Insect Pests ◽

Forest Products ◽

Signs And Symptoms ◽

Growth Conditions ◽

Eucalyptus Species ◽

Cupressus Lusitanica ◽

Pests And Diseases ◽

High Incidence ◽

The Government ◽

Increasing Demand

Increasing demand for wood is putting pressure on forest resources that are equally under threat from insect pests and diseases. Reported average annual forest loss stands at 0.2% globally, 0.8% in Africa, and 1.6% in Kenya. To meet the increasing demand for forest products in Kenya, the government and private sector have established plantations of non-native tree species dominated by Eucalyptus species, Cupressus lusitanica, and Pinus patula. To ensure successful forest plantation establishment and management schemes, there is a need for sufficient knowledge and understanding of tree growth conditions and threats including pests and diseases. This study aimed at determining the incidence of plantation and tree nurseries in Kimondi Forest, Kenya. Tree plantations were mapped into 2.5 Ha rectangular portion transects parallel to the forest roads. In randomly selected portions, observations were carried out for disease and pest signs and symptoms on various tree parts (leaves, stem, roots, fruits, and twigs). In the tree nurseries, 3 m × 1 m rectangular quadrants were placed on seedling beds and similar observations were made. Collected data indicated a high incidence of nursery seedling pests (5.3 % leaves and 5.1% stems) on Eucalyptus species and least on P. patula (2.4% leaves and 3% stems). Higher incidence of plantation pests (35.0% leaves of Eucalyptus sps.) and least on P. patula stems (1.2%) were recorded. On the other hand, twelve (12.0%) of C. lusitanica and (1.8%) Eucalyptus species plantation twigs were infested by pests. A high incidence of nursery seedling disease (9.8%) was observed on C. lusitanica leaves and least on P. patula stems (3.6%). Higher incidence of plantation diseases (32 %) on leaves of Eucalyptus sps. and least on C. lusitanica stem (1.4%) was recorded. In both tree nurseries and plantations, roots and fruits remained free from pests and disease. Major tree pests and diseases identified in Kimondi forests include (Human, wildlife, livestock, Cinara cupressi, Gonipterus scutellatus, Pinus pini, and Leptocybe invasa) and (damping-off, Fusarium wilt, Botryosphaeria canker, cypress canker, and Mycosphaerella spp.) respectively. These results suggest a need for regular monitoring and intervention measures to control pest and disease infestation in the Kimondi forest.

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Volume and Implicit Taper Functions For Cupressus Lusitanica and Pinus Patula Tree Plantations in Ethiopia

Ethiopian Journal of Environmental Studies and Management ◽

10.4314/ejesm.v2i1.43498 ◽

2009 ◽

Vol 2 (1) ◽

Cited By ~ 5

Author(s):

L Berhe

Keyword(s):

Tree Plantations ◽

Pinus Patula ◽

Cupressus Lusitanica

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Woody Species Diversity and Management in Homegarden Agroforestry: The Case of Shashemene District, Ethiopia

International Journal of Forestry Research ◽

10.1155/2019/3697047 ◽

2019 ◽

Vol 2019 ◽

pp. 1-6

Author(s):

Tefera Jegora ◽

Zebene Asfaw ◽

Agena Anjulo

Keyword(s):

Species Diversity ◽

Management Practices ◽

Woody Species ◽

Diversity Management ◽

Persea Americana ◽

Importance Value Index ◽

Cupressus Lusitanica ◽

Croton Macrostachyus ◽

Woody Species Diversity ◽

Cordia Africana

The study was conducted in Shashemene district, Ethiopia. Management-related data were collected using informal and formal surveys. Woody species diversity and related parameters were collected from 60 households. Woody species with ≥5 cm diameter at breast height (DBH) were measured and recorded and below 5 cm were counted and recorded in 10 m ∗ 10 m and 1 m ∗ 1 m plot, respectively. A total of 36 woody species were recorded, of which 58% were indigenous to the area. The overall mean number of woody species per plot was 3.13. Four woody species, namely, Cordia africana, Croton macrostachyus, Persea americana, and Catha edulis, showed highest importance value index. Farmers’ preference ranks for selected woody species were recorded in order of Cordia africana, Eucalyptus camaldulensis, Croton macrostachyus, and Cupressus lusitanica, respectively. The similarity in woody species composition between the study villages ranged from 0.46 to 0.60. To sustain the management of woody species, farmers implemented pruning, thinning, composting, weeding, digging, and watering activities in the area. Garden availability and market and road accessibility are the major determinants of woody species in homegarden agroforestry. The study revealed woody species diversity, management practices implemented, and factors affecting woody species diversity management in homegarden agroforestry. Therefore, government should be worked on infrastructure, resource reallocation, and awareness creation in communities for the better improvement of species diversity and its sustainable management in homegarden agroforestry.

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Morphological, mechanical, and optical properties of cypress papers

Holzforschung ◽

10.1515/hf-2013-0125 ◽

2014 ◽

Vol 68 (8) ◽

pp. 867-874 ◽

Cited By ~ 3

Author(s):

Ofélia Anjos ◽

António J. A. Santos ◽

Rogério Simões ◽

Helena Pereira

Keyword(s):

Light Scattering ◽

Energy Demand ◽

Mechanical Performance ◽

Fibre Length ◽

Kraft Pulping ◽

Cupressus Lusitanica ◽

Tear Index ◽

Length Width ◽

Pulp Properties ◽

Pine Species

Abstract The pulping properties of cypress species are not known and the present paper aims to filling this gap. Namely, Cupressus lusitanica Mill., C. sempervirens L. and C. arizonica Greene have been submitted to kraft pulping and the pulp properties are compared with those of Pinus pinaster Aiton. and P. sylvestris Watereri as references. Schopper Riegler degree, density, Bekk’s smoothness, tensile index, tear index, burst index, stretch, dry zero-span strength, wet zero-span strength, brightness, opacity and light scattering coefficient have been tested. The pulp yields and delignification degrees of cypress woods were lower than those of the pine references. Fibre length, width and coarseness were statistically different between pines and cypress species and C. sempervirens pulps have corresponding data close to those of pine species. Cypress pulps can be refined much faster than pine pulps. The papers sheets of cypress fibres have, in general, lower mechanical performance than those of pine fibres. Papers from C. arizonica and C. lusitanica are similar and C. sempervirens has intermediate properties being between the other cypress and pine species. However, cypress fibres are relatively short, flexible and collapsible and can be refined with low energy demand, and thus could be incorporated into papers resulting in products with better light scattering and smoothness.

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Involvement of cAMP signaling in elicitor-induced phytoalexin accumulation in Cupressus lusitanica cell cultures

New Phytologist ◽

10.1111/j.1469-8137.2004.00976.x ◽

2004 ◽

Vol 161 (3) ◽

pp. 723-733 ◽

Cited By ~ 26

Author(s):

Jian Zhao ◽

Yingqing Guo ◽

Koki Fujita ◽

Kokki Sakai

Keyword(s):

Cell Cultures ◽

Camp Signaling ◽

Cupressus Lusitanica

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