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Karti Rahayu Kusumaningsih
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wanatropika@instiperjogja.ac.id
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Fakultas Kehutanan INSTIPER Gd. Jati Jalan Nangka II, Maguwoharjo, Depok, Sleman Yogyakarta
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INDONESIA
Jurnal Wana Tropika
Published by Institut Pertanian Stiper Yogyakarta
ISSN : 20887019     EISSN : -     DOI : https://doi.org/10.55180
Core Subject : Agriculture, Social,
Agriculture, Biological Sciences & Forestry Environmental Science
Wana Tropika first published in 2011 by Department of Forestry, Faculty of Forestry, Stiper Agricultural University. Jurnal Wana tropika, the official journal of the Indonesian Society for Forestry, publishes primary research paper, review article, policy analysis and research notes and preliminary results in all areas of forestry.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 5 Documents
 1 
Search results for , issue "Vol 1 No 1 (2011)" : 5 Documents clear
FALLOW SYSTEM IMPROVEMENT (FSI) : TEKNIK AGROFORESTRI UNTUK MEMPERPENDEK WAKTU BERA DAN MENINGKATKAN KESUBURAN TANAH Kaliman, Windrati
Jurnal Wana Tropika Vol 1 No 1 (2011)
Publisher : Fakultas Kehutanan Institut Pertanian STIPER Yogyakarta

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Abstract

Fallow System Improvement (FSI) is one of Agroforestry Technology that use for reducing periode time of fallow. The Obyective of the research is to improve soil fertility in the land fallow after sand mining using FSI by application gamal leaf as a mulch.Research method that was used is Experimental research with unit area of 10 m x 10 m plots for application of mulch. Soil analysis was done before and after mulch application in order to know the contain of nutrient of the soil.The study indicates that the land restoration through application mulch of Gliricidiasepium leaf( FSI) can improve organic material, P,K, and C content of the soil in the period time of 4 months.Therefore, the land can be planted 10 months after sand mining. It is less than the usual fallow is more than 2 years especially in the land after sand mining. Key Words: Fallow, Agroforestry Technology, Mulch, Gliricidia sepium
KEJAYAAN KELAPA SAWIT DALAM ANALISIS VERBAL Salam, Heru
Jurnal Wana Tropika Vol 1 No 1 (2011)
Publisher : Fakultas Kehutanan Institut Pertanian STIPER Yogyakarta

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Abstract

Prospect of investment in the forestry sector is still enough attractive for employers. The problem encountered when investors use the forests for development oil palm plantation without regard to the functions of forests. These conditions will damage wildlife habitat of important flora, and also adverse various aspects of human life. To reduce the rate of forest damage, the government has issued Presidential Instruction No. 10/2011 which contain of moratorium on forest use. This policy will reduce GDP, but economic values of wildlife and important flora as well as environmental, can be improved.Key Words : fungtion of forest, oil palm plantation, economic value
SIFAT PENYERAPAN BAHAN PENGAWET PADA BEBERAPA JENIS KAYU BANGUNAN Kusumaningsih, Karti Rahayu
Jurnal Wana Tropika Vol 1 No 1 (2011)
Publisher : Fakultas Kehutanan Institut Pertanian STIPER Yogyakarta

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Abstract

Wood preservation is important to increase the service life of species woods which have low natural durability. The absorption of preservative in wood is effected by anatomy, physical and chemical properties of wood and kind of preservative. The purpose of this research is to know effect of wood species, i.e : Paraserianthes falcataria, Shorea spp., Cocos nucifera and Toona sureni, and kind of preservative namely borax (Na2B4O7.5H2O) and terusi (CuSO4) on the absorption, retention and penetration of preservative. Results of this research showed that wood species investigated gived significant effect on the absorption and retention. The highest absorption was resulted on Paraserianthes falcataria and the highest retention was resulted on Cocos nucifera wood. Borax gived higher absorption, retention and penetration than terusi. Paraserianthes falcataria wood tend to easier to absorb preservative than three wood others. Key Words : Preservative, Absorption, Retention, Penetration
KAJIAN DIAMETER - PERSENTASE KAYU TERAS TERHADAP KUALITAS KAYU JATI (Tectona grandis Linn. F) DARI HUTAN RAKYAT GUNUNG KIDUL Woesono, Hastanto Bowo
Jurnal Wana Tropika Vol 1 No 1 (2011)
Publisher : Fakultas Kehutanan Institut Pertanian STIPER Yogyakarta

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Abstract

The research is aim to determine of influence diameter and percentage heartwood to physical and mechanical of teakwood properties. This research uses wood diameter factor, which comprises 3 levels of 15-21 cm, 22-28 cm and 29-35 cm and the percentage of heartwood that comprises 3 levels of 25-45%, 45-65% and 65-85%. These factors were then designed a randomized complete with factorial pattern. Observed parameters are the physical properties of wood (moisture content, specific gravity, and dimensional changes) and the mechanical properties of wood (static bending strength, compression strength parallel to grain, compression strength perpendicular to grain and shear strength). The result of the research shows that diameters factor affect significantly on air dry moisture content, longitudinal shrinkage from air dry to oven dry condition, Modulus of Elasticity (MOE) and compression strength parallel to grain. The percentage of heartwood factor affects very significantly on moisture content, tangential swelling from air dry to wet condition and Modulus of Elasticity. The interaction factor between diameters and percentage of heartwood also affects very significantly on specific gravity and shear strength. The rate of air dry moisture content is 13.88%; specific gravity is 0.65; MOE is 108.13 (1000kg/cm2); MOR is 1243.83 kg/cm2; compression strength parallel to grain is 569.41 kg/cm2; compression strength perpendicular to grain is 122.80 kg/cm2; and shear strength is 79,1602 kg/cm2. The result of the research show also that wood has the highest diameters is not always the best of quality (physical and mechanical properties) but, the highest percentage of heartwood to trend has the better teakwood quality specially physical properties. Key Words : diameters, the percentage of heartwood, community forest teakwood quality
UPAYA MENINGKATKAN KUALITAS PAPAN SEMEN LIMBAH INDUSTRI KAYU DENGAN PERLAKUAN BAHAN DAN KADAR PEREKAT Sushardi, Sushardi
Jurnal Wana Tropika Vol 1 No 1 (2011)
Publisher : Fakultas Kehutanan Institut Pertanian STIPER Yogyakarta

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Abstract

Technology of cement board developed so chips industrial disposal of wood specially in the form of changeable lignoselulosa become material which is good for human prosperity. The waste upon which cement board will obtain double advantage this lessen the expense peculiarly and obtain substance with the higher economic value. The aim of the research is to know the influence of treatment of waste of particle and proportion of cement adhesive to nature of cement board which is made of by a industrial disposal wood. Factorial experiment arranged in a completely randomized design, with the test continue the Tukey. Factor used in this research is consisted of by the treatment of particle waste ( without treatment, cold soaking and hot soaking) and proportion of cement ( 150%, 200% and 250% from substance weight). Parameter measured were : water content, specific grafity, modulus of repture, modulus of elasticity and thick reduction effect of pressure 3 kg / cm 2 . Result of this research showed that waste of particle and proportion of cement gived very real influence to physical and mechanical properties of cement board. The physical and mechanical properties of cement board from industrial disposal, namely specific grafity, modulus of rapture and modulus of elasticity were suitable with DIN 1101 standard. Key Words : Cement board, industrial disposal, treatment of waste, proportion of cement

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