Abstract
The teak breeding program has long been conducted by Perum Perhutani and produced superior teak and was named Teak Plus of Perhutani - Jati Plus Perhutani (JPP). With good silviculture practices, JPP-teak of 9 year-old can produce no less than 100 m³/ha, with ± 60 cm of tree circumstance. The high demand for teak wood is an opportunity to develop JPP-teak with fast growing character. Research shows that the quality of JPP wood of 5 and 10 years of age can be classified into Strength Class III. Although the quality of JPP-teak is not equal as the teak gets older, it can be improved through several methods, such as densification, thermal modification, etc. Durability of fast growing JPP-teak can be enhanced by additional treatment with natural or chemical material preservation. Wood color modification can be done through heat treatment method. The color change of JPP-teak of 5 years of age that looked more brownies with variation in value of color change (ΔE*) of 1.04 to 48.53. Modification technology influenced the properties of teak wood and it is an opportunity of JPP to gain added value as a renewable forest resource product. With teak forest area covering 1.7 million hectares, Perum Perhutani has challenges in developing JPP-teak with more added value.
Highlights
The utilization of teak wood for many purposes mainly because of its natural strength, durability, and beautiful fiber structure
The visual observation on five years old Jati Plus Perhutani (JPP) teak wood is white coloured dominant since it mostly consists of sapwood and secondary heart wood (Fig. 1-left)
On the ten years old JPP teak, the heart wood percentages are between 45.8055.95% varied on different sites
Summary
The utilization of teak wood for many purposes mainly because of its natural strength, durability, and beautiful fiber structure. Perfomance of fast Fast growing performance teak wood coming with low wood quality is a challenge and interesting to be solved to correct the deficiencies. The nine years old JPP-teak may produce timber not less than 100 m3/ha with 60 cm of mean circumference. Intensive silviculture practices (silin) on JPPteak are expected in increasing the performance and productivity It is mentioned in Basri and Wahyudi (2013) that the application of intensive silviculture can accelerate the heart wood formation and to gain straight stem. The visual observation on five years old JPP teak wood is white coloured dominant since it mostly consists of sapwood and secondary heart wood (Fig. 1-left). On the ten years old JPP teak, the heart wood percentages are between 45.8055.95% varied on different sites. Some physical and mechanical feature of JPP-teak of 5 and 10 years old
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