Research Article | Published: 01 December 2005

Standardization of borehole method of oleoresin tapping in blue pine (Pinus wallichiana A.B.Jackson)

Rajneesh Kumar and K. R. Sharma

Journal of Non-Timber Forest Products | Volume: 12 | Issue: 4 | Page No. 177-181 | 2005
DOI: https://doi.org/10.54207/bsmps2000-2005-CP785C | Cite this article

Abstract

The present investigations in Blue Pine (Pinus wallichiana A.B. Jackson) were carried out to study the effect of borehole diameter and depth and concentrations of chemical stimulants on oleoresin yield. The experiment was carried out in Jelly UPF-167, Unprotected forest of Mashobra range of Shimla Forest Division of the Himachal Pradesh. The trees having diameter between 30-35 cm were selected for the study. The significant differences were observed for all the morphological parameters (height, needle length, needle thickness and grain angle) except that for the diameter of selected trees. Maximum oleoresin yield was obtained from 3.125 cm borehole diameter with 17.5 cm depth and minimum from borehole of 1.25 cm diameter with 10 cm depth. Higher oleoresin yield was obtained when 10 per cent ethephon + 20 per cent sulphuric acid (mixture) was sprayed into boreholes, whereas the lowest yield was recorded in control.

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How to cite

Kumar, R. and Sharma, K.R., 2005. Standardization of borehole method of oleoresin tapping in blue pine (Pinus wallichiana A.B.Jackson). Journal of Non-Timber Forest Products, 12(4), pp.177-181. https://doi.org/10.54207/bsmps2000-2005-CP785C

Publication History

Manuscript Published on 01 December 2005

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