Note sur Gmelina arborea Roxb., essence de repeuplement pour la forêt tropicale asiatique.

1931 ◽  
Vol 11 (115) ◽  
pp. 168-174
Author(s):  
Didier Normand
Keyword(s):  
Gmelina Arborea

ACCEPTABILITY AND UTILIZATION OF GRADED LEVELS OF GMELINA ARBOREA AND CASSAVA PEELS CONCENTRATES IN WEST AFRICAN DWARF SHEEP

2015 ◽  
Vol 4 (2) ◽  
pp. 415-422
Author(s):  
Amoka Pius ◽  
Tawose O M
Keyword(s):  
Dry Matter ◽  
Nutritive Value ◽  
Control Diet ◽  
Nutrient Digestibility ◽  
Dry Matter Intake ◽  
Gmelina Arborea ◽  
Leaf Meal ◽  
Dry Matter Digestibility ◽  
Inclusion Level ◽  
Cassava Peels

The nutritive value ,voluntary dry matter intake, and the nutrient digestibility of graded levels of Gmelina arborea and cassava peels concentrates in WAD sheep was investigated. Twelve WAD sheep aged 1-2 years old and weighting 14.00± 0.45 kg were used in a complete randomized design. Diets were formulated such that cassava peels was replaced with Gmelina arborea leaf meal at 0, 33.33, 66.67, 100% levels, designated as diets A, B, C, and D respectively. Diet without Gmelina arborea leaf meal was tagged the control diet. The concentrate feed was compounded to contain 16% CP. Diets with 33.33% inclusion level of Gmelina arborea had significantly (P<0.05) higher dry matter intake (DMI) 598.80g day-1, while the lowest DMI 425.00g day-1 was obtained in animals fed 100% inclusion level of Gmelina arborea. Crude protein intake (CPI) of animals fed diets with 33.33% inclusion levels of Gmelina arborea were significantly (P<0.05) highest, followed by 66.67% inclusion level and the least was observed in 0% inclusion level of Gmelina arborea. Dry matter digestibility (DMD) was significantly (P<0.05) different across the dietary treatments, animals placed on diets with 33.33% inclusion level had the highest DMD, followed by animals on diets with 66.67, 100 and 0% inclusion levels. CP digestibility (P<0.05) increased from 33.33% to 100% inclusion levels of Gmelina arborea leaf meal, the lowest CP digestibility was observed at 0% inclusion level. CF digestibility (P<0.05) increased from 33.33% to 100% inclusion levels of Gmelina arborea leaf meal, while the lowest CF digestibility was observed at 0% inclusion level. N intake increased significantly (P<0.05) with increase in the level of Gmelina arborea inclusion from 33.33% to 100%. N retention was significantly (P<0.05) different, diets with 33.33% Gmelina arborea inclusion had the highest value (64.36g day-1) followed by 66.67%, 100% and the least (52.64g day-1) was at 0% inclusion level of Gmelina arborea.  N balance values also followed the same trend. From the results of this study, it can be concluded that the inclusion of Gmelina arborea leaf meal in WAD rams diet was well tolerated without adverse effect on acceptability, intake and nutrient digestibility, and inclusion level of 33.33% is hereby recommended in ruminants diet for optimum performance and productivity.

ÍNDICE DE SITIO Y PRODUCCIÓN MADERABLE EN PLANTACIONES FORESTALES DE Gmelina arborea EN TABASCO, MÉXICO

2015 ◽  
Vol 38 (4) ◽  
pp. 415
Author(s):  
Pablo Martínez-Zurimendi ◽  
Marivel Domínguez-Domínguez ◽  
Alfonso Juárez-García ◽  
Leydi M. López-López ◽  
Verónica De-la-Cruz-Arias ◽  
...  
Keyword(s):  
Von Bertalanffy ◽  
Gmelina Arborea ◽  
O 19

El índice de sitio es una representación gráfica de la capacidad productiva de un área forestal, que describe la relación entre la altura dominante y la edad de un rodal (bosquete de características homogéneas), o árbol individual de una especie determinada. En este estudio se ajustaron los modelos de crecimiento de Von Bertalanffy, Chapman, Monomolecular, Logístico, Gompertz, Weibull, Hossfeld IV, Levakovic III, Korf y Sloboda para generar curvas anamórficas de índice de sitio para Gmelina arborea Roxb., con base en datos edad-altura dominante obtenidos de mediciones y remediciones en parcelas de muestreo de plantaciones forestales comerciales en el estado de Tabasco, México. Se utilizó el método de la curva guía; los parámetros de crecimiento de los modelos ajustados se obtuvieron con SAS, mediante regresión no lineal. De acuerdo con la bondad de ajuste, el análisis de residuales y su validación con la eficiencia, el error medio del modelo y la diferencia absoluta media, seis modelos resultaron satisfactorios. Se determinaron cinco curvas de índices de sitio con edad base de 10 años, las cuales se clasificaron en mala (14.5 m), regular (19.5 m), buena (24.5 m), muy buena (29.5 m) y excelente (34.5 m). Se ajustaron ecuaciones que cuantifican el índice de sitio en función del área basal y la edad de la plantación, útiles para definir la calidad de sitio hasta que la plantación alcance 5 años de edad o 19 m2 ha-1 de área basal. Se identificaron modelos de la evolución del diámetro medio cuadrático y el volumen de madera en las plantaciones en función de la edad, y el valor generado de índice de sitio. Estos modelos servirán para predecir la producción de madera (m3 ha-1/año) y el turno en el que se alcanzará un diámetro de corta determinado, en función del índice de sitio.

Mechanical properties of Gmelina arborea for engineering design

2021 ◽  
Vol 288 ◽  
pp. 123123
Author(s):  
Stanley Emeka Iwuoha ◽  
Werner Seim ◽  
Jonathan C. Onyekwelu
Keyword(s):  
Mechanical Properties ◽  
Engineering Design ◽  
Gmelina Arborea

Gmelina arborea– a viable species for smallholder tree farming in Indonesia?

New Forests ◽  
2004 ◽  
Vol 28 (2/3) ◽  
pp. 207-215 ◽  
Author(s):  
James M. Roshetko ◽  
Pratiknyo Purnomosidhi
Keyword(s):  
Gmelina Arborea ◽  
Tree Farming

Polyporus baudonii. [Descriptions of Fungi and Bacteria].

1975 ◽  
Author(s):  
G. C. A. van der Westhuizen
Keyword(s):  
South Africa ◽  
Geographical Distribution ◽  
Ivory Coast ◽  
Brown Rot ◽  
Gmelina Arborea ◽  
Cassia Siamea ◽  
Root Contact ◽  
Upper Volta

Abstract A description is provided for Polyporus baudonii. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: On Celtis rhomnifolia, Cassia siamea, Eucalyptus spp., Gmelina arborea, Pinus spp. DISEASE: Death of host and decay of roots and crown. Pale brown rot. GEOGRAPHICAL DISTRIBUTION: Africa (Angola, Congo, Ghana, Ivory Coast, Kenya, Malagasy, Mozambique, Republic of South Africa, Tanzania, Upper Volta, Zaire). TRANSMISSION: Through soil by root contact; by air-borue spores.

Effect of different concentration of indole-3- butyric acid and cutting size on rooting in gmelina (Gmelina Arborea Roxb.)

2020 ◽  
Vol 9 (1) ◽  
pp. 63-67
Author(s):  
Mayavel ◽  
J Soosairaj ◽  
K Sreenivasan ◽  
A Nicodemus
Keyword(s):  
Butyric Acid ◽  
Gmelina Arborea
Sign in / Sign up

Export Citation Format

Share Document