Jurnal Penelitian Hasil Hutan

10-16

Authors: Mohamad Siarudin & Ary Widiyanto1

This research aims to examine the quality of manglid (Manglieta glauca Bi sawn boards through two sawing patterns, based on the defective shape andfiber separation.S amp/es of mang/id logs uere takenfrom communityforest in S odonghi/ir village,Tasikma/aya &genry, WestJava. A total of 3 5 sawn boardsfrom each of live sawingpattern and semi-quarter sawingpattern were taken as specimens. The research results show that type of shape defects occurred were twisting defect (55,91 %), curving defect(53,57 %) and arcing defect (41,35 %). In terms of the.fiber separation defects, a// of defect types occurred including dosed rupture (18,25 %), opened rupture (14, 13 %) and splitted (2,82 %). The arcing and twisting defects are signijicant/y different between the two saning patterns. The curving defect, dosed rupture, opened rupture,and splitting are re/ative!J similar between the two sawingpatterns. SarJJtl boardsfrom live saivingpattern have a lower arcing defect and percentage of fresh sapwood, but have a higher curving defect than thosefrom semi quarter sawingpattern. Based on those defective shape andfiber separation defects, sawn board extractedfrom live sawingpatterns shows better quality than those of semi quarter refering to the Indonesian National Standard.

27-39

Authors: Mody Lempang & Muhammad Asdar

This research was carried out to examine basic wood properties (anatomical structure, pbysica! and mechanical properties and machining aspect of three lesser-known species .from natural'forest in Sulawesi i.e. sama-sama (Pouteriafirma Baehni), palado (Aglaia sp.)and kumea batu (Manilkara merrilliana HJ.L ). Appropirate wood utulization was determined by considering their basicproperties and uses 1vhich the local!J community have current!J emplqyed.Results revealed thatsama-sama heartwood is dark brown to black with irregular black lines bands; ratherfine texture and glossysurface;rather hea1!J; moderate in dimensional shrinkage; strenghtclass IV IIL•goodgradefarmachinery;fiber grade is good far pulp/ paper manufacture;probable utilization arefar light construction material in house building and certain ship components, peeling veneer, glulam,pallet, pulp and paper.Pa/ado heartwood is light brown to grayish brown colour; straight grain; ratherfine texture;rather hea'!Y; moderate in dimensional shrinkage; strenght class IIL•good grade in machinery;fibergradeisgoodfar pulp/ paper manufacture;probableutilization arefar light construction material in house building and certain ship components, cheap furniture, moulding, glulam, peeling veneer, handicraft, pulp and paper.Kumea bat« heartwood is reddish brown colour; growth rings diffuse and sometimes appeared clear withfigures of decorativesurfaceasparallellines on radial section; grain straight,• texturefine and glossy surface; remarkab!J hea'!Y; high in dimensional shrinkage;strenght class II;very good grade in machinery; fiber gradeis poor for pulp/paper manufacture,probable utilization are for hea1!J construction material in house and ship building, vehicular(truck), boc/ypower linepoles,furniture,moulding, slicing veneer, tool handles, handicraft and charcoal

51-58

Authors: Dulsalem

A stucfy onproductivity and cost of logs extraction usingP 3 HH24 slgline .rystem tool was carried out in community forest of Sukarrga Village, Warungkiara Sub Regenry, Sukabumi Regenry in 2009. The objective is to find out information of productivity and cost of P3HH24 slgline .rystem toolfor logs extraction. Data on log volumeand working time of logs extraction as well as transportation costwere collected Thestucfy revealed that: 1.Logextractionproductivityranged.from 5.737 to8.331 n/ / ritwithanaverageof 7.067 mJ/ rit. 2.Average cost of log extraction was "Rp 9,244,-/m1 lower than theprevious cost (Rp 15,713,-/m)The increasing efficienry of the average extraction cost was 34%. 3.Log extraction usingP3HH24 slgline.rystem tool isfeasible based on pqy backperiod (1.3 years), netpresent value (Rp 154,734, 164,-), IRR(76.73%) and B/C ratio (1.62). 4. Average land exposure caused ry logextraction usingP3HH24 slgline .rystem toolwas4%. 5.Chain supporter and the endless cable drum need improvements to increase the efficienry of logs extraction using P3 HH24 sk:Jline .rystem tool, motoric chain supporting and endless cabledrum need improving.