Study on fundamental properties of wood of 5 eucalyptus hybrid clones by artificial hybridization planted in Bau Bang, Binh Duong

Abstract

With the goal to clarify the variation in wood fundamental properties of 5
eucalyptus artificial hybrid clones UE3, UC1, UE4, GU94, UE24 grown in
silvicultural experiment station Bau Bang, Binh Duong province to find
clones with fast-growing and good quality timber for expanding the planting
area. The timber may serves well for the wood processing industry, especially
for lumber purposes. Data collected on growing of 5 eucalyptus hybrid clones
shows the ability of fast and stable growth in the range of 0.9 to 1.9cm/year in
diameter and 0.35 to 1.8m/year in height, reaching from 89 to 543dm
3
/tree in
volume. The wood specific gravity, wood fiber length increases from the pith
to the bark with a small variation (specific grvity increased from (0.5 - 0.7)
near the pith to (06 - 0,8) near the bark; fiber length increased from (1.4- 1.5)
mm near the pith to (1.7- 1.8) near the bark). UE3 and UE24 was the outstanding clones with strong points in both growth and wood specific gravity.
They should be expanded in to the other ecologycal region and assessed the
quality of wood for the lumber purposes. However, due to great value of total
shrinkage and swelling ratio, preservation in logging and processing to avoid
cracking, warping should be marked