Abstract. Chaerani N, Sudrajat DJ, Siregar IZ, Siregar UJ. 2019. Growth performance and wood quality of white jabon (Neolamarckia cadamba) progeny testing at Parung Panjang, Bogor, Indonesia. Biodiversitas 20: 2295-2301. The aim of this study was to evaluate the genetic parameters of growth and wood quality in white jabon progeny test at 54 months old in Parung Panjang, Bogor. The 105 half-sib families obtained from 12 provenances were evaluated in a randomized complete block design with five replications. Wood quality was assessed both in a non-destructive way using a pilodyn and by destructive method using wood sample taker. Results indicated that the mean value ranged from 5.10 to 10.15 m for height, 6.67 to 15.30 cm for diameter, 2.30 to 3.62 cm for pilodyn penetration, 0.66 to 0.82 g/cm3 for wood density, 0.33 to 0.50 for specific gravity, and 66 to 111 % for moisture content, respectively. There were significant differences among 105 families for all traits except moisture content. The high heritability estimate was found for height (0.4-0.69) and basic density (0.27-0.59). Applying 80% selection intensity on diameter and leaving 84 best families in each block will produce a high total genetic gain. Pilodyn penetration had negative correlation with diameter, wood density, and specific gravity.

Sugar palm (Arenga pinnata) is one of the non-timber forest product that has many benefits and still had high economic demands, therefore it is necessary to be cultivated and due to the farmers still utilizing sugar palm stands that grow naturally. The cultivation of sugar palm is so difficult to be done because there was no efficient and effective technology that can break the dormancy problem yet. The objective of this research was to determine the effect of sanding and seeds submersion in various concentration of KNO3 to break the dormancy of sugar palm seeds. The experiment was performed in Greenhouse of Agriculture Faculty of Mataram University from June to September 2015. The experiment was conducted in 2x3 factorial experiments on Completely Randomized Design (CRD) with five replications. First factor was sanding (A):  A1 = without sanding dan A2 = sanding and second factor was submersion in various concentration of KNO3 (N): N1 = 0.4%, N2 = 0.5%, and N3 = 0.6%. Results of this study indicated that both treatments gave significant effect in breaking the dormancy of sugar palm seeds. Sanding and submersion in 0.5% KNO3 resulted in single significant effect on all parameters except embryonic axis. The interaction between both treatments only showed significant effect on rotten seeds.

Kegiatan finishing pada produk kayu menjadi faktor penting dalam rangkaian proses pengerjaannya. Selain untuk peningkatan stabilitas dan perlindungan, finishing juga dilakukan untuk meningkatakan nilai estetika. Namun demikian, kandungan bahan finishing dalam cat masih didominasi dari bahan berbasis kimia yang tidak baik untuk kesehatan maupun lingkungan. Selain itu, produk kayu yang telah difinishing menggunakan bahan kimia masih bisa diserang oleh organisme perusak dan mengalami pelapukan saat pemaparan di luar ruangan. Maka dari itu, melalui kegiatan pengabdian ini ditawarkan solusi peningkatan mutu kayu menggunakan metode yang sudah sejak lama digunakan di Jepang dalam pengawetan kayu yaitu metode yakisugi. Proses finishing yang dilakukan pada UMKM pengerjaan kayu di Desa Perina masih tergolong konvesional sehingga kualitas yang dihasilkan pun tidak maksimal, ditambah lagi dengan kualitas bahan baku yang tidak terlalu baik. Maka dari itu, kegiatan pengabdian ini bertujuan untuk menawarkan alternatif baru dalam peningkatan mutu kayu menggunakan metode yakisugi yang tidak hanya menghasilkan produk kayu bernilai estetika tinggi, namun ramah terhadap lingkungan. Kegiatan pengabdian yang telah dilakukan memberikan warna baru dalam proses finishing dibandingkan metode yang umumnya digunakan. Kegiatan ini juga membuka ide-ide baru dalam menciptakan produk perkayuan yang unik, estetik dan ramah lingkungan.