Keragaman Pertumbuhan dan Pendugaan Kualitas Kayu Jati (Tectona grandis Linn f.) yang Ditanam dengan Sistem Agroforestri

Abstract

Teak (Tectona grandis Linn f.) is a type of wood that is known as quality wood, with a high level of durability and strength, and is easy to work with. Good plant management is the best solution to meet the increasing need for teak. Therefore, information regarding tree growth and estimating the quality of teak wood is very important for managers to determine the cutting period and to improve product quality and suitability of wood properties in accordance with the needs of the developing industry in Indonesia. The aim of this research is to analyze tree growth and estimate the quality of teak wood planted using an agroforestry system. This research was carried out from May 2023 to Oktober 2023, in the Juhar Wargan-angin Village Community Forest, Juhar District, Karo This research was carried out by census with a total of 120 trees at the age of 15 years. Growth characteristics were measured by measuring total height, stem diameter, free branch height and crown diameter. Wood quality estimation was carried out by testing the physical properties of wood on core samples, namely moisture content, specific gravity and wood density. The results of growth measurements in teak stands mean total height of 18.69 m, average trunk diameter of 25.66 cm, average free branch height of 6.19 m, average crown diameter of 5.11 m . Meanwhile, estimation the quality of teak wood has an average water content of 108.95%, an average specific gravity of 0.40 and an average wood density of 0.81 gr/cm3. The growth of trees and the quality of teak wood in the Juhar Perangin-angin Village Community Forest are diverse.