Jurnal Penelitian Hasil Hutan

93-110

Authors: Gusmailina

This article presents several effective growth indications of bulian (Eusyderoxylon zwagen) and agarwood (Aquilariamalaccensis) seedlings which planted in variousmedia of bioactive charcoalcompost. This stutfy emplqyed two main compositions of sawdust activated compost, i.e., sawdust bioactivated compost (ASG) and the ASG plus ricestraw(ASGJ).The research was conducted through 4 months observation in a seedbed belongto Government Forestry DistrictinJambi. Experiments were completely randomize designed with uanousportions of ASG and ASGJ ranging from15 % to 50 %.Growth media contained similar portions of conventional compost wereused for comparison, while the control simply contained 100% of top soil Parameter sobservedin this stutfy consisted o fgrowth percentage, height, andstem diameter increaments. The collected data were then analized accordingto Duncan and 5chejfe test. & suits indicatedthatthe seedling growthof bulian and gaham in AS G and ASGJ media were better than those plantedin conventional compost or controlmedia.

119-129

Authors: Sona Suhartana & Yuniawati

The technique of reduced impact logging is considered to increase felling productivity and decrease production cost. Study was carried out on 2009 in two forest companiesin Riau and Jambi. Theaims of thesffltly are tofind out the effect of RIL implementation on productivity, produaion cost and timber utilization efficiency (IVE). Observations made on were log volume,felling time and operational cost of RIL in comparison with those of the local techniques.Replication consistedof 15 treesfor each technique. Data were the nanalyzed usingt-test procedure. Study results showed that implementation of RIL technique in peat swamp forest plantation could: 1) increase productivity about 0.328 m3/bour (Riau) and 0.982 n/ /hour (ambi); 2) decrease production cost approximatefy Rpt,767.1,-/ m'(jambi) and Rp 518.6,-/ n/ (Riau);3)increase TIJE about 7.9% similar to Rp 25,438,000,000,-/year (]ambi)and 5.6%similarto Rp 15,680,000,000,-/year(Riau). The above characteristics clearfy indicated that the RIL applicationin Jambi is beterthan that in Riau.

145-155

Authors: R.Sudradjat,Yogie,S, D.Hendra & D.Setiawan

There is a tendency of increasing national fossil fuel demand annuallyin Indonesia, on the other hand case of shortage supply has not been solved yet, these tend to make a wider discrepanry of fossil fuel supply and demand So, national strategy focussed on enhancing biofuel production as fossilfuel substitute. One of the efforts is maximum utilization of natural resourcef sar biofuel especially biofuel plants that came from forest area. Kepuh (Sterculia foeticla) is afa restplant biofuel which largely exists in Java and otherisland sthat has agood prospectto be developed for biodiesel In this studY, optimalization of transesterification process of Sterculia foeticla oilwas done using some variable of methanol and KOH concentrations. Evaluation focussed on acid value and other parameters such as, water content, kinematicviscosity and density. Besides, observationwas also conducted to the increasingof acidityduring storaging.The best biodiesel characteristics were produced by using methanol20% and KOH 1 % where acid value, kinematicviscosity and density 0.36 mg KOH/g, 4.28 cSt and 880.7 kg/,.,/, respectively .Acid values of crude oil, degummedoil and biodiesel were increased constantly during storaging.

169-183

Authors: Andianto

Anatomical features can be used identify eaglewood producing species. Some of these species are members of thymeleaceae. Wood sample soffive species producing-eaglewood and two related species were prepared by slidingmicrotome into thin sectionsfor anatomical-structureobservation. Fiber and vesseldimensions were measuredon the samples.Results indicated that wood portions of Aquilaria spp., Gyrinops versteeghii and Gyrinopsis cumingiana contained included-phloem which were not ecountered on Amyxa pluricornis and Phaleria sp. Wood of Aquilaria spp. exhibited the vessels in radial multiples of 2(-3) common cells. Radial multiple vessels are also found in Gyrinops versteeghii and Gyrinopsis cumingiana wood with 2-4(-6-8) common cells. Wood of Gyrinops versteeghii and Gyrinopsis cumingiana could be disting uished by their different ray width, wherelly theformer had uniseriatewidth, while the latter revealeduni-to bi-seriate. Further,Amyxapluricornis and Phaleria sp. woods could be differentiated by theirparencbyma types. The formerwood speciespossesses a confluent axial parencllyma, whilethe latter contained vasicentric axial parencllyma. Solitary-vessel percentage, ray height, and fiber length at the stems of Aquilaria malaccensis and Aquilaria microcarpa were greater than those in their roots, but the reverse was truefor vessel diameterand length.

199-207

Authors: Han Roliadi & Setyani Budi Lestari

A trial bas been carried out on processing of wood-longging wastes into pulp and paperboard manufacture using the mixture of pulp from wood-longging wastes and paper-min sludge at two various proportions,i.e. 50:50% and 25:75%. The processing of pulp from those tuastes emplftyed semi-chemical soda process in semi-pilotscale, using the conditions, i.e. alkali concentrations at 14% and 16%, weight ratio of wastes to cooking liquor 1:5.5. & suits revealed that the pulpfrom 14% alkaliconcentration suited better as thes/11dgemixtureforpaperboard manufacture,based onpulp yield, alkali consumption, and Koppa number. Theyield and physical as well as strength properties of paper board from the mixture o fpulp from wood-loujng wastes (50%) and paper-mill sludge(50%) together with additiveswere higher than thosefrom the mixture with 25:75% proportion (with additives). Further, the physical/ strength properties of paperboard from the mixture with 50:50% proportion were higher than conseet1tive!J thoseproducedfrom small scalepaptr board factory using the mixture of waste paper (50%) and sludge (50%) without additives; and those from the mixture ofplantation forest's wood-logging wastes pulp and paper-mill sludge(with additives and at 50:50% proportion). This suggests the prospective use of pulp from natural production forest's wood-longging wastes as a substitute material mixed with sludge, in place of wastepaper mrrently used by small-scalepaper board industries.