The effects of age and height on the physical properties of Bambusa vulgaris var. Green in Chagni, Northwest Ethiopia.

Autor: Silie, Getie, Rawat, Yashwant S., Bachheti, Rakesh K., Kelemwork, Seyoum
Zdroj: Journal of the Indian Academy of Wood Science; Jun2024, Vol. 21 Issue 1, p88-99, 12p
Abstrakt: This study aimed to investigate the influence of the physical properties of Bambusa vulgarisvar.Green on its utilization. A total of nine B. vulgaris var. green culm samples were harvested from three age groups. The results showed that the highest average density (629.45 kg/m3) was found in the age of four at the top culm portion, while the lower (573.35 kg/m3) was at the bottom culm portion of age two. High density at the top portion was due to a large number of vascular bundle distribution and law density at bottom portion was due to a less number of vascular bundle distribution with large size metaxylem vessels in this portion. In this study, considerably higher moisture content was observed at the bottom culm portion of age two (72.37%), but the lowest (39.91%) was at the top of the culm at four years old. The present study unveiled an increasing trend in the basic density of bamboo within an increasing age and basal to the top portion of the bamboo culm. In terms of shrinkage, a decreasing trend was observed from the basal to the top culm portion in both radial and tangential directions. Additionally, decreasing trends in culm diameter, culm solid volume, and number of internodes per culm were found with an increase in the culm's maturity and the culm's portions. This circumstance may be due to the silvicultural process or the soil properties of the locality. Moreover, the culm solid volume was higher (912.75 cm3) at the bottom portions of the age two and lower (346.64 cm3) at the top sections of the age four bamboo culms, whereas the length of the internode increased from the bottom towards the middle portion again decreasing at the top portion. In conclusion, younger B. vulgaris culm is ideal for bent items in addition to coating with finishing materials to enhance its durability; because of having low density, longer internode length, and thin culm wall thickness; however, it's not appropriate for structural and outdoor purposes due to higher moisture content and less dimensional stability. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index