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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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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.
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