Abstract:
Jelutong wood (Dyera costulata) is one of the endemic tree species in Kalimantan which is starting to
become scarce. This research aims to analyze the growth characteristics of jelutong wood planted by
the community in peatland in Central Kalimantan. Land processing without burning makes this
community plantation forest environmentally friendly. Thirty-eight trees of jelutong from one block
were measured diameter and three height, end then categorized to fast, medium, and slow-growing.
One tree from each category was harvested. Two centimeters of the disk were collected from each
harvested trees from a 1.3 meter height and continued every 2 meters to the peak of trees to measure
water content, specific gravity, anatomical properties, derived wood, and chemical content of jelutong
wood. From the analyses, jelutong has low specific gravity and short fibers, categorized into class two
for pulp and paper raw materials. Extractive content in alcohol benzene from jelutong wood was low
that preferable for pulp and paper. On the other hand, jelutong wood is suitable for plywood raw
materials.
Keywords: jelutong, Dyera costulata, anatomical properties, chemical content
