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Sharma, K. R.
- Resin Tapping from Lower Diameter Classes of Chir Pine by Rill Method Using Group of Different Blaze Width in himachal Pradesh
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Indian Forester, Vol 126, No 1 (2000), Pagination: 83-88Abstract
In the present study it was found that resin yield increased with the increase in diameter class D4 (20-22.5cm) to Dl (27.5-30cm) and the group of blaze width from Bl (8, 10, 12 and 14cm) to B4 (14, 16, 18 and 20cm). The resin yield also increase as blaze width increased within blaze group itself. The tree in diameter class D4 (20-22.5cm) yielded resin less than 2.0 kg per season so it is not feasible to commercially tap the trees of this diameter class. The trees of other three diameter classes viz. D3 (22.5-25cm), D2 (25-27.5cm) and Dl (27.5-30cm) are feasible for commercial resin tapping because they yielded more than 2.0 kg of resin per season. The maximum resin yield was obtained in the month of May (hottest) and the lowest in the month of October (coldest). The eight month tapping period showed the average resin yield of 2.30 kg per tree per season.- Effect of Tree Diameter and Number of Boreholes on Oleoresin Yield in Pinus Roxburghii Sargent
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1 Department of Forest Products Dr Y.S. Parmar University of Horticulture and Forestry, Nauni, Solan H.P.
1 Department of Forest Products Dr Y.S. Parmar University of Horticulture and Forestry, Nauni, Solan H.P.
Source
Indian Forester, Vol 140, No 9 (2014), Pagination: 875-881Abstract
The oleoresin is an important forest produce of pine forests in the world. The conventional rill method of tapping leads to the destruction of some wood and the production of poor quality oleoresin. The improved tapping technique i.e. borehole method was used by applying 10% ethephon and 20% H SO as a stimulant. The mean oleoresin yield of low, 2 4 medium and high resin yielders was 827.24, 1486 and 2594.8 g/season respectively. The highest oleoresin yield was recorded in R-11 high resin yielder (3975 g/season) and lowest oleoresin yield was found in R-20 low resin yielder (465 g/season). The highest oleoresin yield of 2.24 kg was recorded in 40-45 (D ) diameter class. The oleoresin yield differed 3 significantly among the different boreholes drilled at different time interval. The maximum oleoresin yield of 684.5 g/hole/tree was obtained from first (B ) borehole (March to October) and minimum oleoresin yield (523.4 g/hole/tree) 1 was recorded in B (May-October).Keywords
Oleoresin Yield, Chir Pine; Tree Diameter, Borehole Method, Number of Boreholes- Temporal Stability Analysis of Resin Yield of Natural Regenerated Chir Pine (Pinus roxburghii Sargent) in Himachal Pradesh
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1 Dr. Y.S. Parmar University of Horticulture and Forestry Nauni-Solan, Himachal Pradesh, IN
1 Dr. Y.S. Parmar University of Horticulture and Forestry Nauni-Solan, Himachal Pradesh, IN