Potency and Characteristics of Logging Waste at PT Kemakmuran Berkah Timber in East Kalimantan

D . Keywords: t notch Shorea ) Dryobalanops ) S.johorensis Dryobalanops ) S.johorensis espite logging activity has been carried out carefully, the logging waste remains difficult to avoid. Occurrence of logging waste is caused by natural factors (hole, crooked, rotten pith, notch) and technical factors (splits and other felling faults). Individual logging waste at natural forest concession of PT Kemakmuran Berkah Timber ranged from 0.577 to0. 728 m /tree with an averageof 0.677m /tree Thewasteof stump(0.006m /tree).(0.325m /tree),andintop(0.355m /tree).Inregardwithwood quality,0.378m /tree(±55.85%)of themcanbecategorizedas"good",andtheremaining0.299m /tree(±44.15%)isclassifed as "defect'', countinuing notch, bent, broken or holes. Potency and characteritic of logging wastes differ among Red Meranti ( spp.), Kapur ( spp.) and Majau ( ). For Red Meranti, the butt waste were greater (0.623 m / tree or 64.94%) than the top waste (0.322 m / tree or 34.17%) and the stump waste (0,009 m /tree or 1.00%). Kapur ( spp.) and Majau ( ), top waste than the butt and stump wastes volume of Kapur have greater is 0.356 m /tree (81.63%), with butt waste of 0,076 m /tree (17.51%) and stump waste of 0,004 m /tree (0.86%). The logging wastes of Majau were 0.385 m / tree (59.42%); 0.257 m / tree (39.72%), and 0.006 m / tree 0.86%), for the top, butt and stumprespectively.