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All Journal Peronema Forestry Science Journal
Luthfi Hakim
Program Studi Kehutanan, Fakultas Pertanian, Universitas Sumatera Utara, Jl. Tri Dharma Ujung No. 1 Kampus USU Medan 20155
Agriculture, Biological Sciences & Forestry

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BAHAN ANTI NYAMUK (Mosquito repellent) dari AKAR TUBA (Derris elliptica (Roxb.) Benth) (Material Mosquito Repellent of Tuba Root (Derris elliptica (Roxb.) Benth) Miduk Sihombing; Yunus Afifuddin; Luthfi Hakim
Peronema Forestry Science Journal Vol 2, No 2 (2013): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

The use of chemicals to control insects such as mosquitoes can have a negative impact on the environment and humans. The use of natural ingredients that are toxic and environmentally friendly like tuba plant (Derris elliptica (Roxb.) Benth) is one solution that is expected to be used as an alternative ingredient for protection against insects. This study research to determine the exact manner and evaluate extractive toxicity tuba root extract (Derris elliptica (Roxb). Benth) as an mosquito repellent by examining the effects of tuba root methanol extract and tuba  root chloroform extract  with different concentrations (0%, 2%, 4%, and 6%) on mortality and the mortality rate of mosquitoes. The results showed that there was a very significant effect of extract of tuba root against mosquito death. Tuba root with a concentration  6% is considered the most effective for killing 50% of mosquitoes. The results indicate that the tuba roots chloroform extract has its toxicity and  very high potential to be developed into an mosquito repellent. Keywords: Derris elliptica (Roxb.) Benth, tuba root, mosquito repellent, toxicity, mortality.
Durability of Modified Fiber Plactic Composite (FPC) Against Marine Borer Ade Dwi Fonna Rizki; Luthfi Hakim; Ridwanti Batubara
Peronema Forestry Science Journal Vol 3, No 1 (2014): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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The Fiber plastic composite (FPC) board that made from corrugated paper fiber and plastic polypropylene with maleic anhydride (1 % and 2 %) as compatibilizer and benxzoil peroxide (15 %) as initiator (modified). The purpose of this research were to evaluate the quality of the physical properties of modified FPC board, identification kinds of marine borer, and the durability against marine borer. The physical properties was based on JIS A 5905-2003 and JIS A 5908-2003. The durability of modified FPC board against marine borer was based on SNI 01-7207-2006. The Modified FPC board was soaking in the sea of Port Belawan, Medan for six months.The results showed the physical properties of modified FPC board were full fil the standard JIS A 5905-2003 and JIS A 5908-2003. The durability of modified FPC board against marine borer according SNI 01-7207-2006 was classified into very durable and durable. The marine organism which found on modified FPC board were 17 specieses but only 2 specieses classified as marine borers, there are Limnoria sp and Teredo sp. After the split test was known that the pattern of attacks on the modified FPC board is Martesia striata's attack patterns of pholadidae.Keywords: FPC, Marine Borer, Modified, Physical Properties, Sea Of Port Belawan
Co-Authors Ade Dwi Fonna Rizki Miduk Sihombing Ridwanti Batubara Yunus Afifuddin