The Effects of Method and Direction of Tapping on Gum Production fromIndustrial Plantation Forest's elutong Trees

]elutonggum isgum !Jpifies exudatesthat resultfrom the tapping of Dyera trees.]elutonggumoffers various uses, such as raw material of gum, a mixture of automobile tire manufacture, rau/ materialfor making paints, adhesives and varnishes. The study was conducted to determine the method and direction of tapping on gum productionfrom Industrial Plantation Forest'sJelutongTrees (HT!). The tappingmethodsperformed are slicing 1vith ha!f spiralpattern fromtheupper leftto the louer right (1/2 S Kr Kn), slicing 1vith 'V" shape pattern, and slicing ivith ha!f spiralpatternfrom upper right to the lower left (1/2 S Kn Kr). The resultsrevealed that HTI of Private Compali is a type of s1vamp (Dyera polyphylla Miq. Steenis or Dyera lowii Hook. j). The tappingmethod that afforded the high gum production and more applicable n/as the so-called balf-spira! siicingfromthe upper left toiuard the lower right (1/2 S Kr-Kn). Theproperties of jelutonggum produced are asfollow: 46.20% of moisture content, 0.04% of ash content, 0.24% of impurities,0.07% of nitrogencontent and 52.75% of resin.