Toksisitas Bahan Pengawet Boron-Kromium Terhadap Serangga Dan Jamur Pelapuk Kayu

Abstract

The aim of this research was to evaluate the toxicity of technical-grade chromated-boron salts formula against wood termites and wood rotting fungi. Wood samples were preserved using vacuumpressure methods with 5 different concentrations. For the test against subterranean termites, 25 mm x 25 mm x 5 mm preserved wood samples were put in containers previously filled with humid sand media and 200 termites. For the test against dry wood termites, 50 Light were put into glass tubes which were attached onto the widest surface of treated wood samples measuring 50 mm x 25 mm x 20 mm. Meanwhile, the test against rooting fungi was carried out by putting preserved wood samples into pot containing that was cultured in potato dextrose agar. The testing period was 12 weeks, except for the test against dry wood termites which was only conducted in 4 weeks. The results showed that technicalgrade chromated-boron is highly effective to prevent subteranean teremites and dry wood termites. Total or 100% termites mortality was attained using 1% concentration with 6.01 kg/m and 5.64 kg/m retention, for subteranean and dry-wood termites, respectively. For wood rotting fungi, the effective concentartion was 7.5% with 455.44 kg/m tention.

EFEKTIVITAS BAHAN PENGAWET BORAKS DAN TERUSI TERHADAP KEAWETAN KAYU JATI PUTIH (Gmelina arborea Roxb.) DARI SERANGAN RAYAP TANAH (Coptotermes curvignathus).

“…Kayu jati putih dapat menghasilkan berbagai macam produk kerajinan seperti kayu lapis, korek api, peti kemas dan bahan kerajinan kayu lainnya (Setiadi, et al, 2018).Permasalahan utama dalam penggunaan jenis-jenis kayu yang memiliki keawetan alami rendah yaitu mudah terserang oleh berbagai organisme perusak kayu. Kayu dengan keawetan alami rendah sangat rentan terhadap serangan organisme perusak kayu seperti jamur, serangga dan binatang laut penggerek kayu (Barly et al, 2011). Rayap tanah (Coptotermes curvignathus) merupakan salah satu jenis organisme perusak kayu yang sangat merugikan (Amalia et al, 2019).…”