Supplementing Resin Production by Tapping Blue Pine (Pinus walllchiana)

Results of experiments in the tapping of Blue pine, carried out at Kanasar in Chakrata Division have revealed that application of stimulants like 2, 4-D, 2,4, 5-T and MCPA prolong the tapping period and thereby increases the resin yield. Trees tapped for full tapping season i.e. April to November yielded 2.1 to 2.28 kg oleo-resin per tree which is definitely an economically viable proposition especially keeping in view the higher pinene contents in the turpentine oil obtained from blue pine oleo-resin which increases its value.