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All Journal Jurnal Ilmu dan Teknologi Hasil Hutan Peronema Forestry Science Journal Jurnal Ilmu dan Teknologi Kayu Tropis
Irawati AZHAR
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Agriculture, Biological Sciences & Forestry

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POTENSI TUMBUHAN BERACUN SEBAGAI BAHAN BIOPESTISIDA DI CAGAR ALAM DOLOK SAUT Fransiscus Sihombing; Irawati Azhar; Yunus Afifuddin
Peronema Forestry Science Journal Vol 5, No 3 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (752.053 KB)

Abstract

The very high use of chemical pesticides in the agricultural sector is more alarming nowadays. The negative impact of chemical pesticides are health problems in humans and damage to the environment, so it is necessary to find the alternative to overcome this problem. An alternative is by using biopesticides which utilizing poisonous plants that exist in nature. The research is conducted in the Cagar Alam Dolok Saut, Desa Pansur Natolu, Kecamatan Pangaribuan, Kabupaten Tapanuli Utara by using purposive sampling method and shaped transect sample plots, with a total of 98 plots. The purpose of this research is to identify the potential poisonous plants as a biopesticide in conservation area of Dolok Saut. There are 3 aspects of assessment that have been done; local knowledge aspect, diversity aspect and phytochemical aspect. Result shows that there are 9 types of poisonous plants that have been found: Apus Tutung (Clidemia hirta), Modang lalisiak (Ficus sinuata Thunb), Sitanggis (Belamcanda sp.) Dong-dong (Laportea stimulant Gaud) Antaladan (Xanthosoma sp.) Birah (Alocasia arifolia), Tahul-tahul (Nepenthes mirabilis), Bedi-bedi (Callicarpa dichotoma) and Langge (Homalomena javanica). All of samples are identified as having a potential to be used as biopestisida ingredients because they contain secondary metabolites alkoloid, saponins, tannins terpenes and flavonoids.
Pengaruh Kombinasi Bambu terhadap Kualitas Oriented Strand Board (Effect of bamboo combination on the quality of Oriented Strand Board) Adiaman RI Purba; Apri H Iswanto; Irawati Azhar
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 14, No 1 (2016): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/jitkt.v14i1.352

Abstract

Bamboo is a potential alternative material for wood based OSB. Evaluation of physical and mechanical properties of OSB from combined bamboo betung and bamboo tali was emphasized in the present research. Betung and tali bamboo were converted into strands with the length x width x thickness size of 7 cm x 2.5cm x 0.1cm, respectively. Strand were oven dried up to 7% of moisture content. Upon drying, strands wereblended with 5% isocyanat resin. After mat forming, furnish was pressed by hot press machine at 160 oC temperature for 5 minute and 30 kgcm-2 pressure. The prepared OSB was conditioned for 7 days at room temperature. The results showed that bamboo combination increased the physical and mechanical  properties of board. T/TB/T was the best combination in this experiment. OSB properties improved when betung bamboo was applied on the surface. Overall, the properties of board satisfied the requirement of  JIS A 5908 (2003) standard.Key word: betung bamboo, tali bamboo, isocyanate, OSB
Co-Authors Adiaman RI Purba Apri H Iswanto Apri Heri Iswanto Fauzi Febrianto Fransiscus Sihombing Frederick Raymond Hafizah Arinah Jeckson Fransiskus Sagala Jonyal Periandi Sitanggang Marjuki Sihombing Muhdi Muhdi Pardamean Tampubolon Rahmawaty Rahmawaty Rudi Hartono Sihol Marito Malau Sucipto, Tito Tarida Olivia A Hutapea Yonri Situmorang Yunus Afifuddin Zahrial COTO