| dc.description.abstract | Mahogany (Swietenia mahagoni) is a fast-growing species. At the age of
7 to 15 years, it has grown large and can be cut down for timber. The advantages
of mahogany wood are strength, durability, affordability compared to teak wood,
and tiny pores. This study aims to analyze tree growth and estimate the quality of
mahogany wood at the Universitas Sumatra Utara's Arboretum and PT. Hairos in
North Sumatra. Sampling was conducted through a census. Growth
characteristics measured included stem diameter, total height, branch-free height,
and crown diameter. The number of mahogany trees was 536 at the Universitas
Sumatra Utara's Arboretum and 237 at PT. Hairos. The average growth
measurements in the Arboretum were a stem diameter of 0.36 m, a total height of
13.52 m, a branch-free height of 3.29 m, and a crown diameter of 4.00 m. The
average growth measurements in PT. Hairos was a stem diameter of 0.31 m, a
total height of 10.06 m, a branch-free height of 4.03 m, and a crown diameter of
3.80 m. Wood quality estimation was conducted by testing the physical properties
of core samples, including moisture content, specific gravity, and density. The
average measurement results for the physical properties of wood in the
Arboretum were 66.61% moisture content, 0.46 gr/cm3 specific gravity, and 0.76
gr/cm3 density. The average measurement results for the physical properties of
wood at PT. Hairos were 72.51% moisture content, 0.46 gr/cm3 specific gravity,
and 0.77 gr/cm3 density. The growth and quality of wood at each study location
varied. Growth characteristics and wood quality estimations at the Arboretum
have different average results from PT. Hairos | en_US |
