Oleoresin yield of Pinus merkusii trees from East Banyumas

Lukmandaru, G. and Amri, S. and Sunarta, S. and Listyanto, T. and Pujiarti, R. and Widyorini, R. (2020) Oleoresin yield of Pinus merkusii trees from East Banyumas. In: 3rd International Conference in Agroforestry: Adopting Modern Agroforestry Toward Smart Social Forestry Program, ICAF 2019 Yogyakarta 16 October 2019.

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Abstract

Pinus merkusii is the main pine found in Indonesia to produce oleoresin. The present study assessed the oleoresin yield treated by various stimulants (ETRAT, SR4, sulphuric acid, sulphuric acid-Ethepon mixtures), and relate it with several tree characteristics. Trees were selected from different two different class ages i.e. IV (16-20 years) and VII (31-35 years) and were tapped for 8 days by bark chipping method in 5 replications. The pine stand was located in East Banyumas of Perhutani. Results showed that the mixture of sulfuric acid and Ethephon gave comparatively high oleoresin yield levels. In general, tree from age class of VII exhibited higher amount of resin production than those of age class of IV. The levels of oleoresin yield were significantly correlated with tree height in 31-35-year-old trees. After combining data from the two age classes, only a positive relationship between tree diameter and oleoresin yield was measured in untreated trees. For stimulated trees, the oleoresin yield exhibited positive significant correlation coefficient with tree diameter, tree height, and crown closure for certain stimulants. The negative significant correlation was observed between oleoresin yield and site elevation. As no consistent pattern of correlations with regard to stimulating agents, it suggests that the role of other factors should be explored in future works. © 2020 IOP Publishing Ltd.

Item Type: Conference or Workshop Item (Paper)
Additional Information: Cited by: 3; All Open Access, Gold Open Access
Uncontrolled Keywords: pine tapping, resin production, ethylene, quarre method, stimulating agents, tusam
Subjects: S Agriculture > SD Forestry
Divisions: Faculty of Forestry
Depositing User: Sri JUNANDI
Date Deposited: 19 Feb 2025 03:00
Last Modified: 19 Feb 2025 03:00
URI: https://ir.lib.ugm.ac.id/id/eprint/14362

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