Ketahanan kayu asap terhadap serangan anai-anai.
Ketahanan kayu asap terhadap serangan anai-anai.
Ketahanan kayu asap terhadap serangan anai-anai.
SMOKED WOOD RESISTANCE AGAINST TERMITE
Journal of Tropical Forest Science 22(2): 127–132 (2010) Hadi YS et al.
YS Hadi (1), T Nurhayati (2) , Jasni (2), H Yamamoto (3) & N Kamiya (4)
1) Bogor Agricultural University, Kampus IPB Darmaga, Bogor 16680, Bogor, Indonesia. E-mail: yshadi@indo.net.id
2) Forest Products Research and Development Center, Jalan Gunung Batu No 5, Bogor, Indonesia
3) Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Japan
4) Lumber Business Consultant, 51 Tamachi, Okazaki City, Aichi Prefecture 444-0054, Japan
Received December 2008
Mindi wood (Melia azedarach) and sugi wood (Cryptomeria japonica) were smoked for 12 hours using mangium wood (Acacia mangium) to study their resistance against termite. For comparison, wood preserved with 5% borax and untreated wood were prepared. All wood specimens were tested against (1) subterranean termite (Coptotermes curvignathus) in the in-ground test for one year, (2) subterranean termite in the laboratory, and (3) dry wood termite (Cryptotermes cynocephalus) in the laboratory. Sizes of wood specimen were 2 × 0.8 cm in cross-section, and in longitudinal directions were 20 cm for in-ground test, 2.5 cm for subterranean termite test and 5 cm for dry wood termite test. Ten replications were conducted for the in-ground test while for the rest of the tests, five replications. Results showed that mindi wood was more resistant to subterranean termite and dry wood termite attacks compared with sugi wood. Based on the Indonesian National Standard 2006, wood resistance against subterranean and dry wood termite attacks increased one class higher when samples were treated with smoke although it was still lower than wood preserved with borax 5%.
Keywords: Subterranean termite, dry wood termite, termite resistance class
Ketahanan kayu asap terhadap serangan anai-anai.
Kayu Melia azedarach dan kayu Cryptomeria japonica diasapkan selama 12 jam menggunakan kayu mangium (Acacia mangium) untuk mengkaji ketahanan kayu-kayu tersebut terhadap anai-anai. Sebagai perbandingan, kayu yang diawet dengan 5% boraks dan kayu yang tidak dirawat turut disediakan. Semua
spesimen diuji terhadap (1) anai-anai bawah tanah (Coptotermes curvignathus) dalam ujian tertanam untuk setahun, (2) anai-anai bawah tanah di makmal dan (3) anai-anai kayu kering (Cryptotermes cynocephalus) di makmal. Spesimen kayu mempunyai keratan rentas 2 cm × 0.8 cm dan panjang 20 cm untuk ujian pancang, 2.5 cm untuk ujian anai-anai bawah tanah dan 5 cm untuk ujian anai-anai kayu kering. Sebanyak 10 replikasi dijalankan untuk ujian tertanam dan lima untuk dua ujian lagi. Keputusan menunjukkan bahawa kayu M. azedarach lebih rintang terhadap serangan anai-anai bawah tanah serta anai-anai kayu kering berbanding kayu C. japonica. Berdasarkan Standard Nasional Indonesia 2006, rintangan kayu terhadap serangan anaianai bawah tanah serta anai-anai kayu kering meningkat satu kelas apabila sampel dirawat dengan asap. Bagaimanapun nilai ini masih lebih rendah daripada kelas kayu yang diawet dengan 5% boraks.
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